scholarly journals RENDIMENTO DE ROSAS CULTIVADAS EM AMBIENTE PROTEGIDO SOB DIFERENTES NÍVEIS DE IRRIGAÇÃO

Irriga ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 14
Author(s):  
Eduardo Carvalho Oliveira ◽  
Jacinto De Assunção Carvalho ◽  
Elka Fabiana Aparecida Almeida ◽  
Fátima Conceição Rezende ◽  
Simone Novaes Reis ◽  
...  
Keyword(s):  
Water Deficit ◽  
Block Design ◽  
Irrigation Management ◽  
Agricultural Practices ◽  
Water Deficit Stress ◽  
Cut Flowers ◽  
Water Pumping ◽  
Randomized Block Design ◽  
Biometric Quality ◽  
E Mail

RENDIMENTO DE ROSAS CULTIVADAS EM AMBIENTE PROTEGIDO SOB DIFERENTES NÍVEIS DE IRRIGAÇÃO  EDUARDO CARVALHO OLIVEIRA1; JACINTO DE ASSUNÇÃO CARVALHO1; FÁTIMA CONCEIÇÃO REZENDE1; ELKA FABIANA APARECIDA ALMEIDA2; SIMONE NOVAES REIS2 E SÔNIA NAOMI MIMURA2 1Universidade Federal de Lavras, Departamento de Engenharia, Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras, MG. e-mail: [email protected], [email protected], [email protected] de Pesquisa Agropecuária de Minas Gerais, Unidade Regional EPAMIG Sul de Minas, Av. Visconde do Rio Preto, s/n, Vila São Paulo, CEP: 36.301-360, São João Del Rei, MG. e-mail: [email protected], [email protected], [email protected]  1 RESUMO A floricultura de corte tem nas rosas a sua principal exploração no Brasil e possui vasta demanda por pesquisas voltadas à produtividade e qualidade de hastes florais associadas ao adequado manejo da irrigação. Além disso, o manejo correto da irrigação está relacionado à utilização de práticas agrícolas adequadas, as quais se justificam com a redução de insumos como água, energia de bombeamento e fertilizantes. Assim, este trabalho objetivou avaliar o efeito de diferentes potenciais de água no solo sobre o rendimento e qualidade biométrica de hastes de rosas. O experimento foi realizado em casa de vegetação localizada na EPAMIG, em São João Del Rei - MG. Foi utilizado um delineamento em blocos casualizados, envolvendo seis potenciais de água no solo (-15, -30, -45, -60, -90 e -120 kPa) com cinco repetições. Os parâmetros avaliados foram: produtividade, comprimento e diâmetro das hastes e comprimento e diâmetro do botão floral. De forma geral, o déficit hídrico de até -120 kPa não interfere nas características qualitativas das hastes florais. Maiores produtividades são observadas para irrigações mais frequêntes, com -15 e -30 kPa.   Palavras-chave: floricultura, roseira, qualidade, manejo da irrigação, déficit hídrico.  OLIVEIRA, E. C.; CARVALHO, J. de A.; REZENDE, F. C.; ALMEIDA, E. F. A.; REIS, S. N.; MIMURA, S. N.ROSE YIELD CULTIVATED IN PROTECTED ENVIRONMENT UNDER DIFFERENT IRRIGATION LEVELS  2 ABSTRACT Roses lead exploitation of cut flowers in Brazil and demand. The present research focused on flower stems productivity and quality associated to adequate irrigation management. Moreover, the correct management of irrigation is related to the use of appropriate agricultural practices, which are justified by reducing inputs such as water, pumping energy and fertilizers. This work had the aim of assessing the effect of water deficit stress across different soil water potentials on yield and biometric quality of stems roses. The experiment was conducted in a greenhouse located at EPAMIG, São João Del Rei, MG. A randomized block design involving six water potential on soil (-15, -30, -45, -60, -90 and -120 kPa) with five replications was used. Parameters assessed were: yield, length and diameter of the stems, length and diameter of the rose bud. In general, the water deficit of up to -120 kPa does not interfere with qualitative parameters of the stem buds. Higher yields are observed for more frequent irrigations, with -15 and -30 kPa. Keywords: floriculture, rosebush, quality, irrigation management, water deficit. 

scholarly journals PERFORMANCE AGROINDUSTRIAL DE CANA-DE-AÇÚCAR EM DIFERENTES REGIMES HÍDRICOS

Irriga ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 449-464
Author(s):  
Eduardo Magno Pereira da Silva ◽  
Aderson Soares de Andrade Júnior ◽  
Edson Alves Bastos ◽  
Valdenir Queiroz Ribeiro
Keyword(s):  
Block Design ◽  
Irrigation Management ◽  
Saccharum Officinarum ◽  
Water Regimes ◽  
Sugarcane Varieties ◽  
Randomized Block Design ◽  
Industrial Performance ◽  
Technological Quality ◽  
Subsurface Drip ◽  
E Mail

PERFORMANCE AGROINDUSTRIAL DE CANA-DE-AÇÚCAR EM DIFERENTES REGIMES HÍDRICOS     EDUARDO MAGNO PEREIRA DA SILVA1; ADERSON SOARES DE ANDRADE JÚNIOR2; EDSON ALVES BASTOS2 E VALDENIR QUEIROZ RIBEIRO2   1Instituto Federal de Educação, Ciência e Tecnologia do Piauí - Campus Uruçuí Rodovia PI 247, S/N - Portal dos Cerrados, CEP: 64860-000, Uruçuí, Piauí, Brasil, e-mail: [email protected] 2Embrapa Meio‑Norte, Avenida Duque de Caxias, n° 5.650, Bairro Buenos Aires, CEP64006‑220, Teresina, Piauí, Brasil, e-mail: [email protected], [email protected], [email protected]     1 RESUMO   O objetivo desta pesquisa foi avaliar a performance agroindustrial de cana-de-açúcar (planta) em resposta a diferentes regimes hídricos aplicados por gotejamento subsuperficial. O experimento foi realizado em um argissolo vermelho amarelo distrófico, na Embrapa Meio-Norte, em Teresina, Piauí, durante o período de outubro de 2015 a setembro de 2016. Modelou-se o experimento em delineamento experimental de blocos casualizados em parcelas subdivididas, com quatro repetições. As parcelas foram constituídas por quatro regimes hídricos (irrigação mais precipitação pluviométrica) baseados em frações da evapotranspiração de cultura (50% ETc = 1.374,3; 80% ETc = 1.534,2; 110% ETc = 1.712,0 e 150% ETc = 1.905,8 mm) e as subparcelas por dez variedades de cana-de-açúcar (RBUFRPE01, RBUFRPE02, RBUFRPE03, RBUFV01, RB036066, RB987935, RB935744, RB943538, RB92579 e RB867515). As características tecnológicas de qualidade do caldo da cana e rendimentos de açúcar e álcool foram alterados pelos regimes hídricos e variedades. Os maiores teores de Brix (22,5%), Fibras (13,3%), Polcaldo (17,5%) e Polcana (13,9%) foram obtidos com as variedades RB867515, RB935744, RB943538 e RB935744, respectivamente. Os rendimentos de açúcar (32,2 Mg ha-1) e álcool (23 m3 ha-1) foram alcançados com a variedade RB935744 e reposição hídrica próxima a 110% da ETc.   Palavras-chave: Saccharum officinarum, eficiência da água, manejo da irrigação.     SILVA, E. M. P.; ANDRADE JÚNIOR, A. S.; BASTOS, E. A.; RIBEIRO, V. Q. AGRO-INDUSTRIAL PERFORMANCE OF SUGARCANE IN DIFFERENT WATER REGIMES   2 ABSTRACT   The objective of this research was to evaluate the agro-industrial performance of sugarcane varieties (cane plant) in response to different water regimes applied by subsurface drip irrigation. The experiment was carried out in a dystrophic yellow red acrisol at Embrapa Middle North, Teresina, Piauí State, Brazil,  from October 2015 to September 2016. The experiment was designed in a randomized block design in subdivided plots, with four replications. The plots consisted of four water regimes (irrigation plus rainfall) based on crop evapotranspiration fractions (50% ETc = 1,374.3 mm, 80% ETc = 1,534.2 mm, 110% ETc = 1,712.0 mm and 150% ETc = 1,905.8 mm) and the subplots per ten varieties of sugarcane (RBUFRPE01, RBUFRPE02, RBUFRPE03, RBUFV01, RB036066, RB987935, RB935744, RB943538, RB92579 and RB867515). The technological quality characteristics of sugarcane juice and yields of sugar and alcohol were affected by water regimes and varieties. The highest contents of Brix (22.5%), Fibers (13.3%), Pol-juice (17.5%) and Pol-stalk (13.9%) were obtained with varieties RB867515, RB935744, RB943538 and RB935744, respectively. The maxim yields of sugar (32.2 Mg ha-1) and alcohol (23 m3 ha-1) were obtained with  variety RB935744 and water replenishment close to 110% of the ETc.  Keywords: Saccharum officinarum, water efficiency, irrigation management.

scholarly journals COMPORTAMENTO FISIOLÓGICO DE MUDAS DE CAFEEIRO ARÁBICA (cv. OBATÃ E CATUCAÍ) SUBMETIDAS À DEFICIÊNCIA HÍDRICA

Irriga ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 890-899
Author(s):  
ENRIQUE ALONSO ZUÑIGA ◽  
LUZ MARIA RUIZ MACHUCA ◽  
OSVALDIR FELICIANO DOS SANTOS ◽  
MARA LÚCIA CRUZ DE SOUZA ◽  
DARIANE PRISCILA FRANCO DE OLIVEIRA ◽  
...  
Keyword(s):  
Leaf Area ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Water Deficit ◽  
Coffea Arabica ◽  
Block Design ◽  
Field Capacity ◽  
Randomized Block Design ◽  
Severe Water Deficit ◽  
E Mail

COMPORTAMENTO FISIOLÓGICO DE MUDAS DE CAFEEIRO ARÁBICA (cv. OBATÃ E CATUCAÍ) SUBMETIDAS À DEFICIÊNCIA HÍDRICA     ENRIQUE ALONSO ZUÑIGA1*; LUZ MARIA RUIZ MACHUCA1; OSVALDIR FELICIANO DOS SANTOS1; MARA LÚCIA CRUZ DE SOUZA1; DARIANE PRISCILA FRANCO DE OLIVEIRA1 E FERNANDO BROETTO 2   1Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP) Campus de Botucatu. Fazenda Experimental Lageado, Avenida Universitária, n° 3780, Altos do Paraíso, CEP: 18610-034, Botucatu – SP. Brasil. E-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]. *O presente artigo é retirado da tese de Doutorado do autor principal. 2Departamento de Química e Bioquímica, Instituto de Biociências , Universidade Estadual Paulista (UNESP) Campus de Botucatu. Rua Prof. Dr. Antônio Celso Wagner Zanin, nº 250, Distrito de Rubião Junior, CEP: 18618-689, Botucatu – SP. Brasil. E-mail: [email protected]     1 RESUMO   Neste trabalho foram avaliadas características biométricas e teor de pigmentos em plantas de cafeeiro arábica cv. Obatã e Catuaí cultivadas sob deficiência hídrica (DH). O experimento foi conduzido em estufa agrícola no período dezembro-maio de 2016-2017 no distrito de Rubião Júnior (Departamento de Química e Bioquímica do IB/UNESP), Botucatu-SP. Os tratamentos foram dispostos em delineamento em blocos casualizados em esquema fatorial 3x2 em parcelas subdivididas, com quatro repetições por tratamento. Os tratamentos aplicados foram: T1 - 100% da capacidade de campo (CC) - C = Controle, plantas bem irrigadas, T2 - 50% da CC - DHM = Deficiência hídrica moderada e T3 - 25% da CC - DHS = Deficiência hídrica severa. Aos 90, 120, 135 e 165 dias após transplantio (DAT) foram avaliados a altura de plantas, área foliar e teor de clorofilas (a e b). Verificou-se que apenas a altura das plantas e a área foliar diminuíram significativamente em função da severidade do estresse. Entre as cultivares, somente as plantas da cv. Obatã conseguiram se adaptar melhor aos efeitos da DH.   Palavras-chave: Coffea arabica, deficiência hídrica, biometria, pigmentos foliares.     ALONSO-ZUÑIGA, E; RUIZ-MACHUCA, L. M; SANTOS, O. F; SOUZA, M. L. C; OLIVEIRA, D. P. F; BROETTO, F. PHYSIOLOGICAL BEHAVIOR OF ARABIC COFFEE SEEDLINGS (cv. OBATÁ AND CATUCAÍ) SUBMITTED TO WATER DEFICIT     2 ABSTRACT   In this work, biometric characteristics and pigment content were assessed in Arabica cv. Obatã and Catuaí cultivated under water deficit (WD). The experiment was conducted in an agricultural greenhouse from December to May, 2016-2017 in the district of Rubião Júnior (Department of Chemistry and Biochemistry of IB / UNESP), Botucatu-SP. Treatments were arranged in a randomized block design in a 3x2 factorial scheme in subdivided plots, with four replications per treatment. The treatments applied were: T1 - 100% of field capacity (FC) - C = Control, well irrigated plants, T2 - 50% of FC - MWD = moderate water deficit and T3 - 25% FC - SWD = severe water deficit. Plant height, leaf area and chlorophyll content (a and b) were assessed at 90, 120, 135 and 165 days after transplanting (DAT). It was verified that only plant height and leaf area decreased significantly as function of stress severity. Among the cultivars, only cv. Obatã presented better adaptation to the effects of WD. Keywords: Coffea arabica, water deficit, biometry, foliar pigments

scholarly journals RESPOSTA DA CULTURA DO RABANETE SOB CULTIVO ORGÂNICO AOS FATORES DE PRODUÇÃO ÁGUA E COBERTURA DO SOLO

Irriga ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 42-54
Author(s):  
Antonio Vanklane de Almeida ◽  
Alexsandro Oliveira Silva ◽  
Jenyffer da Silva Gomes Santos ◽  
Janiquelle da Silva Rabello ◽  
Valsergio Barros da Silva ◽  
...  
Keyword(s):  
Raphanus Sativus ◽  
Block Design ◽  
Irrigation Management ◽  
Ground Cover ◽  
Organic Cultivation ◽  
Randomized Block Design ◽  
Raphanus Sativus L ◽  
Irrigation Depth ◽  
Semi Arid Region ◽  
E Mail

RESPOSTA DA CULTURA DO RABANETE SOB CULTIVO ORGÂNICO AOS FATORES DE PRODUÇÃO ÁGUA E COBERTURA DO SOLO     ANTONIO VANKLANE DE ALMEIDA1; ALEXSANDRO OLIVEIRA DA SILVA1; JENYFFER DA SILVA GOMES SANTOS2; JANIQUELLE DA SILVA RABELO3; VALSERGIO BARROS DA SILVA1 E ALFREDO MENDONÇA DE SOUSA1   1 Departamento de Engenharia Agrícola, Universidade Federal do Ceará, UFC, Av. Mr. Hull, s/n, Pici, CEP:60356-001, bloco 804, Fortaleza, Ceará, Brasil. E-mail: [email protected],  [email protected], [email protected], [email protected]    2 Faculdade de Engenharia Agrícola, Universidade Estadual de Campinas, UNICAMP, Av. Cândido Rondon, 501 - Cidade Universitária, CEP: 13083-875, Campinas, São Paulo, Brasil. E-mail: [email protected] 3 Departamento de Fitotecnia, Universidade Federal do Ceará, UFC, Av. Mr. Hull, s/n, Pici, CEP:60356-001, bloco 805, Fortaleza, Ceará, Brasil. E-mail: [email protected]     1 RESUMO   Em regiões com limitações de recursos hídricos, como semiárido cearense, o uso eficiente da água torna-se a cada dia imprescindível para a produção de hortaliças irrigadas nestas regiões. Neste sentido, a presente pesquisa teve como objetivo a avaliação técnica e econômica do efeito dos fatores de produção água e níveis de cobertura do solo da bagana de carnaúba sobre a produtividade da cultura do rabanete. A pesquisa foi conduzida no período de junho a agosto de 2018 em dois ciclos de produção em área pertencente ao Prece (Programa de Educação em Células Cooperativas), localizado no município de Pentecoste-CE. O experimento foi conduzido em um delineamento em blocos casualizados com quatro repetições. Os tratamentos foram constituídos por cinco lâminas de irrigação (50%; 75%; 100%; 125% e 150% da evapotranspiração das culturas localizada, ETcloc) e cinco diferentes níveis de cobertura morta constituída de bagana de carnaúba:  25%; 50%; 75% e 100% além da testemunha com o solo sem cobertura 0%, totalizando 100 parcelas experimentais. Os resultados permitiram concluir que a bagana de carnaúba apresentou potencial para utilização como cobertura morta no cultivo de rabanete, proporcionando incremento no rendimento da cultura em condições de estratégia de irrigação com déficit para o uso de 16 t ha-1 de cobertura morta. A cultura rabanete responde de forma crescente às diferentes lâminas de irrigação até a ETcloc de 100%, podendo-se obter ganhos econômicos quando associadas à utilização de cobertura morta no solo.   Palavras-chave: Cobertura do solo. Manejo da irrigação. Função de produção. Raphanus sativus L.     ALMEIDA, A. V.; SILVA, A. O.; SANTOS, J. S. G.; RABELO, J. R.; SILVA, V. B.; SOUSA, A. M.  RESPONSE OF RABANET CULTURE UNDER ORGANIC CULTIVATION TO PRODUCTION FACTORS WATER AND SOIL COVERAGE         2 ABSTRACT   In regions with limited water resources, such as the semi-arid region of Ceará, the efficient use of water becomes indispensable every day for the production of irrigated vegetables in this region. In this sense, this research had as objective the technical and economic evaluation of the effect of the factors of production water and levels of the cover of the soil of the bagana on the productivity of the radish culture. The research was conducted in the period from June to August 2018 in two production cycles in area belonging to Prece (Cooperative Cell Education Program), located in the municipality of Pentecoste-CE. The experiment was conducted in a randomized block design with four replicates. The treatments consisted of five irrigation depth (50%, 75%, 100%, 125% and 150% of crop localized evapotranspiration, ET cloc) and five levels of ground cover consisting of carnauba bagana: 25%; 50%; 75% and 100% beyond the control with the soil without 0% coverage, totalizing 100 experimental units. The results allowed to conclude that the carnauba bagana presented potential for use as ground cover in the cultivation of radish, providing an increase in the yield of the crop under conditions of deficit irrigation strategy to use 16 t ha-1 of ground cover. The radish crop significantly responds to the different irrigation depth, up to 100% ET cloc, and economics gains can be obtained when associated with the use of ground cover in soil.   Keywords: Soil cover. Irrigation management. Production function. Raphanus sativus L.

scholarly journals ESTRATÉGIAS DE IRRIGAÇÃO COM DÉFICIT HÍDRICO NOS ESTÁDIOS FENOLÓGICOS DO FEIJÃO-CAUPI SOB ADUBAÇÃO POTÁSSICA

Irriga ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 111-122
Author(s):  
Lauriane Almeida dos Anjos Soares ◽  
Thamara Layse Freitas Medeiros ◽  
Victoria Cristina Gomes Colman ◽  
Irlan Victor de Sousa Palmeira ◽  
Idelvan José da Silva ◽  
...  
Keyword(s):  
Water Deficit ◽  
Vigna Unguiculata ◽  
Arid Regions ◽  
Block Design ◽  
Management Strategies ◽  
Phenological Stages ◽  
Randomized Block Design ◽  
Management Of Resources ◽  
Pod Length ◽  
E Mail

ESTRATÉGIAS DE IRRIGAÇÃO COM DÉFICIT HÍDRICO NOS ESTÁDIOS FENOLÓGICOS DO FEIJÃO-CAUPI SOB ADUBAÇÃO POTÁSSICA     LAURIANE ALMEIDA DOS ANJOS SOARES1; THAMARA LAYSE FREITAS MEDEIROS2; VICTORIA CRISTINA GOMES COLMAN3; IRLAN VICTOR DE SOUSA PALMEIRA4; IDELVAN JOSÉ DA SILVA5 E ROMULO CARANTINO LUCENA MOREIRA6   1 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 2 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 3 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 4 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 5 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, Brasil. E-mail: [email protected] 6 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, Brasil. E-mail: [email protected]     1 RESUMO   Palavras-chave: Vigna unguiculata L., tolerância à seca, nutrição mineral     SOARES, L. A. dos A.; MEDEIROS, T. L. F.; COLMAN, V. C. G.; PALMEIRA, I. V. de S.; SILVA, I. J. da; MOREIRA, R. C. L. IRRIGATION STRATEGIES WITH WATER DEFICIT IN THE PHENOLOGICAL STAGES OF THE COWPEA UNDER POTASSIC FERTILIZATION     2 ABSTRACT   In semi-arid regions, water deficiency is the main environmental factor that influences the yield of plants, in these regions the proper management of resources is essential in order to guarantee the sustainability of the production system. Thus, this study aimed to evaluate the morphology and phytomass partition of cowpea (Vigna unguiculata L.), to cultivate BRS Marataoã, when submitted to water deficit management strategies in different phenological stages of the crop and fertilization doses potassium. A randomized block design was used, in a 5 x 5 factorial scheme, with three replications, with the treatments being defined according to the five potassium fertilization doses (50, 75, 100, 125, and 150% of K2O) associated with five water deficit management strategies at the different phenological stages of the crop. The application of water deficit associated with potassium doses favored the growth and accumulation of phytomass in the flowering phase. Increasing doses of potassium when associated with water deficit in the flowering and fruiting stages compromise the number of pods and pod length. In the early stages of the development of cowpea, irrigation with water deficit can be applied without significant losses in the production components.   Keywords: Vigna unguiculata L., drought tolerance, mineral nutrition

scholarly journals Postharvest and anthochron of gladiolus floral stems produced in greenhouse under different seasons and irrigation levels

2021 ◽  
Vol 45 ◽  
Author(s):  
Jaqueline Jesus Santana dos Santos ◽  
Rogério Gomes Pêgo ◽  
Beatriz Rodrigues Monteiro Couto ◽  
Rosária da Costa Faria Martins ◽  
Daniel Fonseca de Carvalho
Keyword(s):  
Block Design ◽  
Irrigation Management ◽  
Storage Period ◽  
Fresh Mass ◽  
Cut Flowers ◽  
Visual Evaluation ◽  
Irrigation Level ◽  
Randomized Block Design ◽  
Different Seasons ◽  
Irrigation Levels

ABSTRACT Cut flowers are delicate products whose quality and longevity depends on growing and postharvest conditions. The aim of the study was to evaluate the anthochron and the postharvest of gladiolus stems produced under different growing seasons and irrigation levels. The experiments were carried out in a greenhouse in the State of Rio de Janeiro (Brazil) during the winter/spring 2018 and autumn/winter 2019 periods. A randomized block design with 5 replications was used, considering irrigation levels of 45%, 60%, 80% and 100% of the crop water requirement. Irrigation management was performed by the automatic irrigation controller, installed in the 100% irrigation level treatment. As they reached the harvest point, considered to be “showing the color” of the three basal florets, the floral stems were harvested, always in the morning, and immediately taken to the laboratory for standardization of size (75 cm). During the storage period, the stems were kept at a temperature of 25 ºC, with the base immersed in a container with 300 mL of water. Fresh mass, water absorption, anthochron and longevity evaluations were performed daily, in addition to a visual evaluation, performed using a proposed senescence scale. The occurrence of severe water deficit during cultivation interferes with the fresh mass of the stems in postharvest and increases the opening speed of the flowers. The floral stems’ longevity is reduced when gladiolus is produced under the 45% irrigation level. There are no significant differences in the longevity of flowers grown in the different seasons and the anthochron value is influenced by the water availability, being lower in the stems kept in field condition (0.70 to 0.80) in comparison to the postharvest condition (0.83 to 0.92).

scholarly journals Effect of Foliar Application of Methanol on Changes of Antioxidant Enzymes of Vigna unguiculata L. in Water-Deficit Stress

2019 ◽  
Vol 39 (04) ◽  
Author(s):  
Aliakbar Saneienejad ◽  
Mahmood Tohidi ◽  
Behnam Habibi Khaniani ◽  
Mehdi Sadeghi
Keyword(s):  
Antioxidant Enzymes ◽  
Water Deficit ◽  
Vigna Unguiculata ◽  
Foliar Application ◽  
Block Design ◽  
Water Deficit Stress ◽  
Methanol Treatment ◽  
Randomized Block Design ◽  
Four Levels ◽  
Plot Design

The aim of this study was to investigate the effect of foliar application of methanol on the activity of antioxidant enzymes of Vigna unguiculata L. in water-deficit stress conditions. The trials were performed in a split plot design arranged in completely randomized block design with three replications in two years cultivation (2017 and 2018). Water-deficit stress treatments were considered in the main plots in four levels (25, 50, 75 and 100% of plant water requirement) and combined foliar application of methanol treatment in three levels (control, 10 and 20% vol.), and genotype treatment in two cultivars of Omidbakhsh 1057 and Mashhad in sub plots. The results showed that the effect of water-deficit stress and foliar application of methanol on the activity of antioxidant enzymes were significant (P £ 0.01). The effect of genotype on the activity of ascorbate peroxidase was just significant (P £ 0.01).

scholarly journals Foliar silicate fertilization assessment on bean development and its water deficit stress tolerance

2021 ◽  
pp. 38-44
Author(s):  
Valeria Pohlmann ◽  
Bruno Moreira Pereira ◽  
Alberto Eduardo Knies ◽  
Marcondes Lazzari ◽  
Diego Portalanza ◽  
...  
Keyword(s):  
Water Deficit ◽  
Dry Matter ◽  
Block Design ◽  
Water Deficit Stress ◽  
Water Deficiency ◽  
Related Factors ◽  
Randomized Block Design ◽  
Relative Water ◽  
Productive Potential ◽  
Pod Length

Bean’s productivity is below its productive potential, and among the related factors is the sensitivity to water deficiency. Silicate fertilization may aid to better tolerate this abiotic stress. Therefore, this work aims to evaluate the effects of foliar silicon (Si) doses in the development and tolerance of water deficiency for the bean’s cultivation. The experiment was conducted in a greenhouse, with a completely randomized block design in a 6x2 factorial scheme with four repetitions. Six doses of silicon (0; 0.5; 1.0; 1.5; 2.0; 2.5 kg Si ha-1) with and without water deficiency in flowering were used. The pots with a capacity of 2 L were filled with dystrophic Red Argisol, and they were maintained with automatic irrigation. The leaf temperature (TF) was analyzed daily, and at the end of the cycle, the plants’ height, aerial and root fresh and dry matter, the number of grains per plant, the number of grains per pod, the number of pods per plant, pod length, and grain fresh and dry matter were determined. After water deficit stress, the percentage of absolute integrity and relative water capacity were determined. The water condition reflected differences in plant height, grain dry matter, number of grains per plant, pods per plant, and the foliar temperature. The silicon doses did not influence the development and tolerance to water deficit for the bean culture.

scholarly journals Drip irrigation in coffee crop under different planting densities: Growth and yield in southeastern Brazil

2014 ◽  
Vol 18 (11) ◽  
pp. 1116-1123 ◽  
Author(s):  
Gleice A. de Assis ◽  
Myriane S. Scalco ◽  
Rubens J. Guimarães ◽  
Alberto Colombo ◽  
Anderson W. Dominghetti ◽  
...  
Keyword(s):  
Plant Density ◽  
Block Design ◽  
Irrigation Management ◽  
Growth And Yield ◽  
Southeastern Brazil ◽  
Soil Water Tension ◽  
Randomized Block Design ◽  
Coffee Plants ◽  
Coffee Cultivation ◽  
Water Tension

Irrigation associated to reduction on planting spaces between rows and between coffee plants has been a featured practice in coffee cultivation. The objective of the present study was to assess, over a period of five consecutive years, influence of different irrigation management regimes and planting densities on growth and bean yield of Coffea arabica L.. The treatments consisted of four irrigation regimes: climatologic water balance, irrigation when the soil water tension reached values close to 20 and 60 kPa; and a control that was not irrigated. The treatments were distributed randomly in five planting densities: 2,500, 3,333, 5,000, 10,000 and 20,000 plants ha-1. A split-plot in randomized block design was used with four replications. Irrigation promoted better growth of coffee plants and increased yield that varied in function of the plant density per area. For densities from 10,000 to 20,000 plants ha-1, regardless of the used irrigation management, mean yield increases were over 49.6% compared to the non-irrigated crop.

scholarly journals Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2399 ◽  
Author(s):  
Diogo Brito de Almeida ◽  
José Geraldo Barbosa ◽  
José Antônio Saraiva Grossi ◽  
Fernando Luiz Finger ◽  
Joice Crescencio Heidemann
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Cut Flowers ◽  
Floral Buds ◽  
Randomized Block Design ◽  
Commercial Harvest ◽  
Physiological Phenomenon ◽  
Cold Chamber ◽  
The Impact

Exposure of bulbs to cold, a physiological phenomenon called vernalization, and bulb size are important factors in the production of lily bulbs and flowers. This study aimed to verify the influence of vernalization of bulbs on flowering cut lily plants, as well as the impact of size and shape of harvest on the production and quality of flowers and bulbs. In turn, the way the stems of the plants used for cut-flower production are cropped is of higher importance for the production of new flower bulbs. In this sense, the experiment was conducted in Viçosa, MG, in a greenhouse in a randomized block design, in split splot scheme with three replications, in which the vernalization periods (25, 35 and 45 days at 4 ± 1 C) constituted the plots; bulb sizes (diameters of 3.2-3.8 cm; 2.5-3.2 cm 1.9- and 2.5 cm), subplots and ways to harvest (full harvest of the stem at the required length for the commercial harvest of the flower, commercial stem harvest at the commercial length, maintaining 10cm of stem in the soil; removal of the floral buds as soon as their appearance is observed and harvest at the end of the season), the sub subplots. The bulbs were planted in beds, with 15 x 20 cm spacing. It was evaluated the number of plants that flowered and the number of flowers, the length and the diameter of the floral buds, fresh and dry weights, diameter and plant height as well as number, perimeter and amount of fresh and dry bulbs. There was a decrease in the plant height with the increase of the vernalization period and a reduction of the diameter of the planted bulbs, as well as of the number and the fresh and dry weights of the produced buds. The production of flowers and buds in number, size and weight was directly proportional to the size of the planted bulbs, while the form of harvest with removal of flower buds increased the number, the perimeter and the fresh and dry weights of the buds. Bulbs with diameter between 3.2 - 3.8 cm, stored for 25 days in cold chamber enable greater production of flowers and the highest stem height, factors that favor the increase in market value.

scholarly journals DESENVOLVIMENTO INICIAL DE MUDAS DE BARUZEIRO (Dipteryx alata Vog) EM FUNÇÃO DE SUSBTRATOS E LÂMINAS DE IRRIGAÇÃO

Irriga ◽  
2017 ◽  
Vol 22 (2) ◽  
pp. 288-300 ◽  
Author(s):  
Henrique Fonseca Elias de Oliveira ◽  
Cléber Luiz De Souza ◽  
Danilo Vieira Félix ◽  
Leandro Da Silva Fernandes ◽  
Polliany Santos Xavier ◽  
...  
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Block Design ◽  
Initial Growth ◽  
Aerial Portion ◽  
Randomized Block Design ◽  
System Length ◽  
E Mail ◽  
Dickson Quality Index ◽  
Dipteryx Alata

DESENVOLVIMENTO INICIAL DE MUDAS DE BARUZEIRO (Dipteryx alata Vog) EM FUNÇÃO DE SUSBTRATOS E LÂMINAS DE IRRIGAÇÃO  HENRIQUE FONSECA ELIAS DE OLIVEIRA1; CLÉBER LUIZ DE SOUZA2; DANILO VIEIRA FÉLIX2; LEANDRO DA SILVA FERNANDES2; POLLIANY SANTOS XAVIER2 E LUCAS MAGALHÃES ALVES2 1Eng. Agrícola, Doutor, Instituto Federal Goiano, GO 154, km 03, CEP 76300-000, Ceres – GO, e-mail: [email protected]ônomo (a), Instituto Federal Goiano, GO 154, km 03, CEP 76300-000, Ceres – GO, e-mail: [email protected], [email protected], [email protected], [email protected], [email protected]  1 RESUMO O presente estudo objetivou avaliar o crescimento inicial de plantas de baruzeiro, sob substratos e lâminas de irrigação e identificar o manejo que resulte em condições ideais para a produção de mudas desta espécie. Foi implantado um experimento no delineamento em blocos ao acaso, com quatro repetições, em parcelas subdivididas no esquema 5 x 4, sendo as parcelas compostas por lâminas de irrigação diárias (6, 8, 10, 12 e 14 mm) e as subparcelas substratos: S1 - 100% Latossolo vermelho; S2 - 50% Latossolo vermelho e 50% Areia; S3 - 45% Latossolo vermelho, 45% Areia e 10% Esterco Bovino Curtido e S4 - Substrato comercial Basaplant®. As características avaliadas foram altura de planta, diâmetro de caule, número de folíolos, comprimento de raiz, massa seca de raiz, massa seca de parte aérea, massa seca de muda, relação das massas secas de raiz e parte aérea e índice de qualidade de Dickson. Aos 200 dias após a semeadura (DAS) o substrato S1 proporcionou maior crescimento e qualidade às plantas de baruzeiro, dado pelo Índice de Qualidade de Dickson (IQD) obtido de 1,05, assim como a lâmina de 14 mm dia-1, a qual obteve IQD igual 0,98, diferindo estatisticamente das demais lâminas avaliadas. Palavras-chave: gotejamento, características produtivas, Índice de Qualidade de Dickson.  OLIVEIRA, H. F. E.; SOUZA, C. L.; FÉLIX, D. V.; FERNANDES L. S.; XAVIER, P. S.; ALVES, L. M.INITIAL DEVELOPMENT OF BARUZEIRO (Dipteryx alata Vog) SEEDLING AS FUNCTION OF SUBSTRATES AND IRRIGATIONS LEVELS  2 ABSTRACT This study aimed to evaluate the initial growth of baruzeiro plants, under substrates and irrigation levels and identify the management that results in ideal conditions for the production of seedlings of this species. The experiment was installed in a randomized block design, with four replications, in split-plot, in the scheme 4 x 5, with plots composed of five daily irrigations levels and four subplots substrates: S1 - 100% OXISOL RED; S2 - 50% OXISOL RED and 50% sand; S3 - 45% OXISOL RED, 45% sand, and 10% of tanned manure and S4 - Commercial Substrate Basaplant. The five daily watering (6, 8, 10, 12 and 14 mm) make up the subplot. The characteristics assessed were plant height, stem diameter, number of leaflets, root system length, dry matter mass of roots, dry matter mass of aerial portion, dry matter  mass of seedling, ratio between roots dry matter mass and aerial portion and seedling quality. At 200 DAS substrate S1 provided greater growth and quality to baruzeiro plants, given by the Dickson Quality Index (DQI) obtained of 1.05, as well as the irrigation depth of 14 mm day-1, once it obtained DQI equal to 0.98, statistically differing from the other irrigation depths assessed. Keywords: drip irrigation, productive characteristics, Dickson Quality Index.

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