EFFECT OF SPRINKLER IRRIGATION MANAGEMENT AND STRAW MULCH ON YIELD, WATER CONSUMPTION AND CROP COEFFICIENT OF PEANUT IN SANDY SOIL

INFLUÊNCIA DA COBERTURA MORTA NA EVAPOTRANSPIRAÇÃO, COEFICIENTE DE CULTIVO E EFICIÊNCIA DE USO DE ÁGUA DO MILHO CULTIVADO EM CERRADO HIPÓLITO MURGA-ORRILLO1; WELLINGTON FARIAS ARAÚJO2; CARLOS ABANTO-RODRIGUEZ3; ROBERTO TADASHI SAKAZAKI4; RICARDO MANUEL BARDALES-LOZANO5 E ANA ROSA POLO-VARGAS6 1Engenheiro Agrônomo, Prof. Auxiliar, Universidad Nacional Autónoma de Chota, (UNACH), Jr. Gregorio Malca Nº 875- Campus Colpa Matara, Chota, Perú. [email protected] Agrônomo, Prof. Dr. Associado da UFRR/CCA, Boa Vista, RR. [email protected] Florestal, Investigador no Instituto de Investigaciones de la Amazonía Peruana, Carretera Federico Basadre, Km 12,400, Yarinacocha, Ucayali, Perú. [email protected] Agrônomo, Doutorando na UFRR/CCA, Boa Vista, RR. [email protected] Agrônomo, Doutorando na UFRR/Bionorte, Boa Vista, RR. [email protected] Agrônoma, Graduada na Universidad Nacional de Cajamarca, (UNC), Av. Atahualpa Nº 1050- Carretera Cajamarca-Baños del Inca, Cajamarca, Perú. [email protected] 1 RESUMOA irrigação consome grande quantidade de água, sendo importante um adequado manejo da cultura para minimizar esse consumo, maximizando a produção. No intuito de obter informações para o manejo da irrigação, objetivou-se com o presente trabalho determinar a evapotranspiração da cultura (ETc), o coeficiente de cultivo (Kc) e a eficiência do uso de água (EUAg) da cultura de milho, em solo com e sem cobertura, durante os diferentes estádios de desenvolvimento, utilizando lisímetros de drenagem. O experimento foi conduzido no campus Cauamé da Universidade Federal de Roraima, entre 19/04/2014 e 07/08/2014, em Boa Vista, RR. A evapotranspiração de referência (ETo) foi estimada pelo método de Penman-Monteith FAO. Os resultados da ETc do milho, durante o ciclo da cultura, em solo sem e com cobertura foram de 421,5 e 351,0 mm, respectivamente. As médias diárias de ETc foram de 4,1 mm dia-1 para solo sem cobertura e 3,4 mm dia-1 para solo com cobertura. A cobertura do solo propiciou valores diferentes de Kc's para o milho, nos mesmos estádios, em comparação aos Kc’s do solo descoberto. Para o solo descoberto, os Kc’s observados para os estádios fenológicos I, II, III, e IV, foram de 0,40; 0,84; 1,59 e 0,81, respectivamente. Já para solo com cobertura, os Kc’s pelos mesmos estádios em menção foram 0,28; 0,64; 1,49 e 0,48, respectivamente. A EUAg para solo com cobertura foi 1,77 kg m-3 e para solo sem cobertura foi 1,65 kg m-3. Estes resultados mostram que a cobertura morta no solo influenciou no consumo hídrico do milho durante todo seu ciclo. Palavras-chave: Zea mays. Irrigação. Solo coberto. Consumo hídrico. MURGA-ORRILLO, H.; ARAÚJO, W. F.; ABANTO-RODRIGUEZ C.; SAKAZAKI, R. T.; BARDALES-LOZANO R. M.; POLO-VARGAS, A. R.MULCH INFLUENCE ON EVAPOTRANSPIRATION, CROP COEFFICIENT AND WATER USE EFFICIENCY OF CORN GROWN IN THE SAVANNAH 2 ABSTRACTIrrigation consumes large amounts of water, and minimizing consumption and maximizing the production are important to a proper crop management . In order to obtain information for irrigation management, the aim of the present study was to determine evapotranspiration (ETc), crop coefficient (Kc) and water use efficiency (WUE) of maize grown in soil with and without cover, during the various stages of development, using drainage lysimeters. The experiment was conducted in Cauamé campus of the Federal University of Roraima, from 19/04/2014 to 08/07/2014, in Boa Vista, RR. The reference evapotranspiration (ETo) was estimated by the Penman-Monteith method. The results of the corn ETc during the crop cycle in soil with and without coverage were 421.5 and 351.0 mm, respectively. The daily average of ETc were 4.1 mm day-1 for bare soil and 3.4 mm day-1 for soil with cover. The ground cover led to different values of Kc's for corn in the same stages as compared to Kc's from the bare ground. For bare soil, the Kc's observed for the phenological stages I, II, III, and IV were 0.40; 0.84; 1.59 and 0.81, respectively. As for covered soil, the Kc's in the same stadiums mentioned were 0.28; 0.64; 1.49 and 0.48, respectively. The WUE to soil with cover was 1.77 kg m-3 and ground without cover was 1.65 kg m-3. These results show that soil mulching influenceS maize water consumption throughout its cycle. Keywords: Zea mays. Irrigation. Ground covered. Water consumption.

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Nitrate Leaching Through Sandy Soil as Affected by Sprinkler Irrigation Management

Journal of Environmental Quality ◽

10.2134/jeq1986.00472425001500030013x ◽

1986 ◽

Vol 15 (3) ◽

pp. 272-278 ◽

Cited By ~ 46

Author(s):

Gary W. Hergert

Keyword(s):

Sandy Soil ◽

Nitrate Leaching ◽

Irrigation Management ◽

Sprinkler Irrigation

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Determination of evapotranspiration and crop coefficient for cauliflower at Paranánorthwest region

Colloquium Agrariae ◽

10.5747/ca.2021.v17.n5.a463 ◽

2021 ◽

Vol 17 (5) ◽

pp. 79-86

Author(s):

André Felipe Barion Alves Andrean ◽

Roberto Rezende ◽

Vinícius Villa e Vila ◽

Lucas Henrique Maldonado da Silva ◽

Gustavo Soares Wenneck

Keyword(s):

Water Consumption ◽

Irrigation Management ◽

Crop Coefficient ◽

Intermediate Stage ◽

State University ◽

Local Data ◽

Local Conditions ◽

Essential Information ◽

Initial Stage ◽

Northwestern Region

Evapotranspiration and the estimation of crop coefficient (Kc) are essential information for irrigation management, contributing to increase the water use efficiency and optimizing resources, mainly using local data. This study aimed to determine the water consumption and the crop coefficient of cauliflower (Barcelona hybrid) in the northwestern region of Paraná. The experiment was conducted in a greenhouse at the Technical Irrigation Center belonging to the State University of Maringá, in Maringá - PR. The crop evapotranspiration was determined using constant water table lysimeters, and the reference evapotranspiration was estimated by the Penman-Monteith method (FAO), using climatological data collected in an automatic meteorological station. The cultivation was carried out from April to July. The total water consumption by the cauliflower was 215.11 mm, a higher value than that available in the FAO recommendations. The crop coefficient (Kc) recommended values for local conditions are 0.74 for the initial stage, 1.86 for the intermediate stage, and 1.50 for the final stage.

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CONSUMO HÍDRICO DO MANJERICÃO POR MEIO DE LISÍMETRO DE DRENAGEM

Irriga ◽

10.15809/irriga.2015v20n4p745 ◽

2015 ◽

Vol 20 (4) ◽

pp. 745-761 ◽

Cited By ~ 2

Author(s):

PATRICIA ANGÉLICA ALVES MARQUES ◽

Jefferson Vieira Jose ◽

Hermes Soares Da Rocha ◽

EUSÍMIO FELISBINO FRAGA JÚNIOR ◽

DANIEL ALVES SOARES ◽

...

Keyword(s):

Water Consumption ◽

Vegetation Index ◽

Irrigation Management ◽

Crop Coefficient ◽

Sao Paulo ◽

Ocimum Basilicum ◽

São Paulo ◽

Crop Evapotranspiration ◽

Mato Grosso ◽

Climate Conditions

CONSUMO HÍDRICO DO MANJERICÃO POR MEIO DE LISÍMETRO DE DRENAGEM PATRICIA ANGÉLICA ALVES MARQUES¹; JEFFERSON VIEIRA JOSÉ2; HERMES SOARES DA ROCHA3; EUSÍMIO FELISBINO FRAGA JÚNIOR4; DANIEL ALVES SOARES5 E SERGIO NASCIMENTO DUARTE¹ 1 Professor(a), Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, [email protected], [email protected] Pós-doutorando, Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, [email protected], Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, [email protected] Professor Adjunto, Instituto de Ciências Agrárias - ICIAG, Universidade Federal de Uberlândia – UFU, Campus Monte Carmelo, Avenida Goiás, 2000, 38500-000 – Monte Carmelo, MG, [email protected] Professor, Universidade Estadual do Mato Grosso, Av. dos Ingás, 3001, 78555-000, Jardim Imperial, Sinop, MT, [email protected] 1 RESUMO A avaliação da necessidade hídrica e do coeficiente de cultura é de grande relevância para um adequado manejo da irrigação. No entanto, há carência de informações sobre a cultura do manjericão. Objetivou-se neste trabalho avaliar o consumo hídrico do manjericão e estimar o seu coeficiente de cultura (Kc), relacionando-o à soma de graus dia (GD) e ao índice de cobertura vegetal (IC). Foram utilizados três lisímetros de drenagem, sendo a contabilização da evapotranspiração da cultura (ETc), em mm d-1, realizada pelas entradas e saídas de água, e a evapotranspiração de referência (ETo), em mm d-1, estimada pelo método de Penman-Monteith, preconizado pelo manual FAO-56. O consumo hídrico da cultura foi de 70,91 mm, 103 mm e 187 mm, correspondendo a um valor médio 1,03; 1,84 e 3,07 mm d-1 nos períodos de cultivos I, II e III, respectivamente. Observaram-se variações nos valores de Kc decorrentes das condições climáticas e das fases fenológicas da cultura. Os valores máximos e mínimos dos Kc foram 0,37-0,23; 0,60-0,27; 1,00-0,38 e 1,15-0,82 para as fases fenológicas I, II, III e IV, respectivamente. A estimativa do Kc em função do GD e do IC foram altamente significativas para a cultura nos três períodos de cultivos. Palavras-chave: coeficiente da cultura, Ocimum basilicum, evapotranspiração da cultura MARQUES, P.A.A.; JOSÉ, J.V.; ROCHA, H.S.; FRAGA JR, E.F.;SOARES, D.A.; DUARTE, S.N.WATER CONSUMPTION OF BASIL USING DRAINAGE LYSIMETER 2 ABSTRACT Evaluation of water requirement and crop coefficient is of great importance for an appropriate irrigation management. However, there has been lack of information on Basil crop. The aim of this study was to evaluate water consumption of the basil crop and estimate its crop coefficient (Kc), relating it to the sum of degree days (DD) and the vegetation index (VI). A total of three drainage lysimeters were used, crop evapotranspiration (Etc) in mm d-1 was determined by inputs and outputs of water; reference evapotranspiration (ETo) in mm d-1 was estimated by the Penman-Monteith method, recommended by FAO-56. Water consumption of the crop was 70.91 mm, 103 mm and 187 mm, which corresponds to mean values of 1.03; 1.84 and 3.07 mm d-1 in the cultivation periods I, II and III, respectively. Variations in Kc values were observed as a result of the climate conditions and phonological stages of the crop. Maximum and minimum Kc values were 0.37-0.23; 0.60-0.27; 1.00-0.38 and 1.15-0.82 for the I, II, III and IV phonological stages , respectively . The estimate of Kc as a function of DD and VI was highly significant for the crop in the three cultivation periods. Keywords: crop coefficient. Ocimum basilicum, crop evapotranspiration.

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Influence of Soil Coverage on Evapotranspiration and Dual Crop Coefficients on Soybean

Journal of Experimental Agriculture International ◽

10.9734/jeai/2020/v42i630546 ◽

2020 ◽

pp. 111-125

Author(s):

João Danilo Barbieri ◽

Paulo Sérgio Lourenço de Freitas ◽

Rivanildo Dallacort ◽

Roberto Rezende ◽

André Luiz Biscaia Ribeiro da Silva ◽

...

Keyword(s):

Water Consumption ◽

Irrigation Management ◽

Main Tool ◽

Crop Coefficient ◽

Dry Mass ◽

Initial Development ◽

Evaporation Coefficient ◽

Output Ratio ◽

Crop Coefficients ◽

Culture Development

Crop coefficient (Kc) study is the main tool used to determine the plant water consumption enabling irrigation management. The dual Kc is related to the evaporation coefficient of water from the soil (Ke), therefore, the objective of the work was to evaluate the influence of the soil coverage, in the variability of the crop evapotranspiration (ETc) of soybean and the dual Kc. The Kc values were determined by the ratio between ETc and ETo (reference evapotranspiration). ETo was estimated using the methodology proposed by Penman-Monteith FAO-56. The ETc values were obtained by the water input and output ratio of the weighing lysimeters system for the culture development phases established as initial; development; intermediate and final. The culture presented a cycle of 118 days for both treatments; the volume of the water precipitated and supplied by irrigation was 786.4 and 89 mm, respectively. The water consumption determined by ETc during the crop cycle was 699.10; 672.57; 649.06; 724.02; 643.46 and 638.12 mm, respectively for levels 0; 2; 4; 6; 8 and 10 t ha-1 of the dry mass of Brachiaria. The average dual Kc obtained was 1.60; 1.48; 1.40; 1.53; 1.42 and 1.47, respectively for coverings and a reduction in Kc was observed for treatments with soil coverage. Yield and development of the root system, were increase on soil coverage of 2 and 4 t ha-1.

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EVAPOTRANSPIRAÇÃO E COEFICIENTE DE CULTURA DA ALSTROEMERIA (Alstroemeria x hybrida) CULTIVADA EM ESTUFA

Irriga ◽

10.15809/irriga.2016v21n4p817-829 ◽

2016 ◽

Vol 21 (4) ◽

pp. 817-829 ◽

Cited By ~ 1

Author(s):

Leonita Beatriz Girardi ◽

Marcia Xavier Peiter ◽

Rogério Antonio Bellé ◽

Adroaldo Dias Robaina ◽

Rogério Ricalde Torres ◽

...

Keyword(s):

Water Consumption ◽

Reference Evapotranspiration ◽

Irrigation Management ◽

Crop Coefficient ◽

Growth Stages ◽

Crop Evapotranspiration ◽

Retention Capacity ◽

Full Flowering ◽

Crop Coefficients ◽

Santa Maria

EVAPOTRANSPIRAÇÃO E COEFICIENTE DE CULTURA DA ALSTROEMERIA (Alstroemeria x hybrida) CULTIVADA EM ESTUFA LEONITA BEATRIZ GIRARDI1; MARCIA XAVIER PEITER²; ROGERIO ANTONIO BELLÉ³; ADROALDO DIAS ROBAINA4; ROGÉRIO RICALDE TORRES5; JARDEL HENRIQUE KIRCHNER5 E LUIS HUMBERTO BAHÚ BEN5 1 Eng. Agrônoma, Mestra, Doutoranda no Programa de Pós-Graduação em Engenharia Agrícola, Universidade Federal de Santa Maria/UFSM, Santa Maria-RS, 97195-000, [email protected] Eng. Agrônoma, Doutora, Professora Associada do Departamento de Engenharia Rural, UFSM, Santa Maria-RS, 97195-000, [email protected] Eng. Agrônomo, Doutor, Professor Associado do Departamento de Fitotecnia, UFSM, Santa Maria-RS, 97195-000, [email protected] Eng. Agrônomo, Doutor, Professor Titular do Departamento de Engenharia Rural, UFSM, Santa Maria-RS, 97195-000, [email protected] Eng. Agrônomo, Mestre, Doutorando no Programa de Pós-Graduação em Engenharia Agrícola, UFSM, Santa Maria-RS, 97195-000, [email protected], [email protected], [email protected]. 1 RESUMO A determinação da necessidade hídrica de uma cultura específica ao longo do seu ciclo é essencial para o correto manejo da irrigação. O objetivo da presente pesquisa foi determinar a evapotranspiração e o coeficiente de cultivo (Kc) da Alstroemeria x hybrida cultivada em ambiente protegido. A determinação da evapotranspiração da cultura (ETc) foi por lisimetria de pesagem, já a evapotranspiração de referência (ETo) foi determinada pelo método de Penman-Monteith. O experimento foi conduzido em estufa climatizada no Colégio Politécnico da UFSM, Santa Maria-RS, tendo como tratamento cinco lâminas de irrigação/reposição de água em relação à capacidade de retenção de vaso (CRV) (30, 45, 60, 75 E 90 % da CRV). O delineamento experimental adotado foi um DIC, delineamento inteiramente casualizado, com um total de dez repetições, sendo uma planta por vaso. Para a avaliação do Kc, foi usado o limite de 90% da capacidade de recipiente. O coeficiente cultural foi obtido pela relação entre a ETc e a ETo. O consumo de água para a cultura da Alstroemeria x hybrida nos tratamentos com limite de disponibilidade hídrica variou de 47,6 mm a 207,8 mm. A média do coeficiente de cultura da Alstroemeria x hybrida cultivada em ambiente protegido foi de 0,39 para o período vegetativo, 0,41 no inicio do florescimento, 0,95 para florescimento, 1,50 para pleno florescimento e 0,75 para a queda no florescimento. Palavras-chave: necessidade hídrica, flor de corte, manejo de irrigação, coeficiente cultural. GIRARDI, L. B.; PEITER, M. X.; BELLÉ, R. A.; ROBAINA, A. D.; TORRES, R. R.; KIRCHNER, J. H.; BEN, L. H. B.EVAPOTRANSPIRATION AND CROP COEFFICIENTS OF POTTED Alstroemeria x hybrida GROWN IN GREENHOUSE 2 ABSTRACT The determination of water requirements of a crop throughout its cycle is critical for a proper irrigation management. The objective of this study was to determine the evapotranspiration and crop coefficient (Kc) of Alstroemeria x hybrida grown under greenhouse conditions. The crop evapotranspiration (ETc) was determined by weighing lysimeters, and the reference evapotranspiration (ETo) was estimated by the Penman-Monteith method. The Experiment was conducted under controlled conditions at the Polytechnic College of UFSM, Santa Maria, RS, and the treatment comprised five depths for water replacement associated to the pot retention capacity (WHC) (30, 45, 60, 75 and 90% of WHC). The experimental design adopted was completely randomized, with ten repetitions, one plant per pot. For the evaluation of Kc, 90% of the container capacity was consideredas limit. The crop coefficient was obtained by the relationship between the crop evapotranspiration and reference evapotranspiration. Our results demonstrated that water consumption for Alstroemeria x hybrida in the treatments with a limit of water availability varied from 47.6 mm to 207.8 mm. The average crop coefficient of Alstroemeria x hybrida grown under greenhouse conditions was 0.39 for the growth stages, 0.41 for the beginning of flowering, 0.95 for flowering, and1.50 and 0.75 for full flowering and for the end of the flowering, respectively. Keywords: water consumption, cut flower, irrigation management, crop coefficient.

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Temporal and Local Heterogeneities of Water Table Depth under Different Agricultural Water Management Conditions

Water ◽

10.3390/w13162148 ◽

2021 ◽

Vol 13 (16) ◽

pp. 2148

Author(s):

Jonathan A. Lafond ◽

Silvio J. Gumiere ◽

Virginie Vanlandeghem ◽

Jacques Gallichand ◽

Alain N. Rousseau ◽

...

Keyword(s):

Water Management ◽

Water Table ◽

Cropping Systems ◽

Irrigation Management ◽

Sprinkler Irrigation ◽

Water Table Depth ◽

Management Systems ◽

Integrated Water Management ◽

Growing Seasons ◽

Good Drainage

Integrated water management has become a priority for cropping systems where subirrigation is possible. Compared to conventional sprinkler irrigation, the controlling water table can lead to a substantial increase in yield and water use efficiency with less pumping energy requirements. Knowing the spatiotemporal distribution of water table depth (WTD) and soil properties should help perform intelligent, integrated water management. Observation wells were installed in cranberry fields with different water management systems: Bottom, with good drainage and controlled WTD management; Surface, with good drainage and sprinkler irrigation management; Natural, without drainage, or with imperfectly drained and conventional sprinkler irrigation. During the 2017–2020 growing seasons, WTD was monitored on an hourly basis, while precipitation was measured at each site. Multi-frequential periodogram analysis revealed a dominant periodic component of 40 days each year in WTD fluctuations for the Bottom and Surface systems; for the Natural system, periodicity was heterogeneous and ranged from 2 to 6 weeks. Temporal cross correlations with precipitation show that for almost all the sites, there is a 3 to 9 h lag before WTD rises; one exception is a subirrigation site. These results indicate that automatic water table management based on continuously updated knowledge could contribute to integrated water management systems, by using precipitation-based models to predict WTD.

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Using Soil Solution Monitoring to Determine the Effects of Irrigation Management and Fertigation on Nitrogen Availability in High-density Apple Orchards

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.123.4.706 ◽

1998 ◽

Vol 123 (4) ◽

pp. 706-713 ◽

Cited By ~ 16

Author(s):

D. Neilsen ◽

P. Parchomchuk ◽

G.H. Neilsen ◽

E.J. Hogue

Keyword(s):

Soil Solution ◽

Irrigation Water ◽

Root Zone ◽

Irrigation Management ◽

Sprinkler Irrigation ◽

Loamy Sand ◽

N Availability ◽

Silt Loam ◽

N Concentration ◽

Loam Soil

Direct application of fertilizers in irrigation water (fertigation) is an efficient method of supplying nutrients to fruit trees. Information is needed on the relationship between irrigation and N inputs on N availability in order to target nutrient applications to meet plant demands. Soil solution was collected from permanently installed suction lysimeters and NO3-N concentration was measured over the growing season in three experiments: 1) comparison of sprinkler irrigation + broadcast fertilizer with weekly fertigation + daily drip irrigation; 2) comparison of (NH4)2SO4 or Ca(NO3)2 as N sources under daily fertigation; and 3) comparisons of combinations of irrigation applied at either fixed rates or to meet evaporative demand and fertilizer (Ca(NO3)2) applied daily either at fixed rates or to maintain a given concentration in the fertigation solution in two soil types—loamy sand and silt loam. Trials are located in high density apple plantings of either `Gala' or `Empire' apple (Malus × domestica Borkh.) on M.9 rootstock. Nitrate-N concentration in the soil solution measured at 30 cm deep remained higher, over more of the growing season, for weekly fertigation + daily drip irrigation than for a single broadcast fertilizer application + sprinkler irrigation. With daily Ca(NO3)2 fertigation, soil solution NO3- N concentrations increased and decreased rapidly with the onset and end of fertigation respectively, remained relatively constant during the intervening period and were directly proportional to either the amount of N or the amount of irrigation water added. Daily fertigation with (NH4)2SO4 resulted in less control of NO3-N availability in the root-zone than with Ca(NO3)2, which may be problematic for precise timing of N nutrition. Except for the fixed irrigation rate applied to the loamy sand soil, soil solution NO3-N concentrations at 30 cm beneath the emitter were similar to average concentrations in the fertigating solution, for all methods of irrigation management in both soil types. Elevated NO3-N concentrations in soil solution below the root zone (75 cm deep) were detected in the loamy sand regardless of methods of N application and irrigation although there was some evidence of less leaching to this depth, under scheduled irrigation. In the silt loam soil, considerably lower concentrations of NO3-N were found beneath the root zone than at 30 cm deep for all of irrigation procedures and frequently there was insufficient water moving to 75 cm to provide sample. Tree growth in the loamy sand was less than in the silt loam soil; was limited by low application of irrigation water in 1992 and 1993; was unaffected by NO3-N concentration in the root zone, indicating that N inputs could be minimized by adding N to maintain concentrations of 75 μg·mL-1 or possibly less. Nitrogen inputs may also be reduced if fertilizer N and irrigation water could be retained within the root zone. For coarse-textured soils this will require precise additions of water and possibly soil amendments to improve water holding capacity.

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IRRIGATION FREQUENCIES FOR Eucalyptus grandis SEEDLINGS

Revista Engenharia na Agricultura - REVENG ◽

10.13083/reveng.v29i1.9669 ◽

2020 ◽

Vol 28 ◽

pp. 364-374

Author(s):

Gustavo Henrique Miguel da Cruz ◽

Fernando França da Cunha ◽

Epitácio José de Souza ◽

Andrisley Joaquim da Silva ◽

Roberto Filgueiras

Keyword(s):

Seed Quality ◽

Block Design ◽

Irrigation Management ◽

Eucalyptus Grandis ◽

Volume Ratio ◽

Crop Coefficient ◽

Experimental Period ◽

Dry Mass ◽

Irrigation Depth ◽

Total Seed

One of the bottlenecks in relation to the production of forest seedlings is irrigation, especially in less-tech nurseries. The small volumes of substrate, where the seedlings develop, lead to low water storage. This fact can lead to water deficit and significant losses in the production of seedlings, generating even mortality. The objective of this study was to determine the best irrigation frequencies for Eucalyptus grandis seedling production in less-tech nurseries. The experiment was conducted between 2013/08/04 and 2013/23/07 (106 days) and conducted in Chapadão do Sul county, Brazil. The experiment was set up in a randomized complete block design, with five replications. Four irrigation frequencies were tested: IF1 (one daily irrigation - 11:00 a.m.), IF2 (two daily irrigations - 11:00 a.m. and 7:00 p.m.), IF3 (three daily irrigations - 07:00 a.m., 11:00 a.m. and 7:00 p.m.) and IF4 (four daily irrigations - 07:00 a.m., 11:00 a.m., 3:00 p.m. and 7:00 p.m.). The sample units were composed of eight seedlings in 50 cm3 conical tubes filled with soil and vermiculite in a volume ratio of 1:1. The irrigation depth was estimated by reference evapotranspiration (Penman-Monteith) multiplied by a crop coefficient equal to two. Plant height, number of definitive leaves, shoot dry mass (root and total), seed quality index, survival and efficiency of water use by eucalyptus seedlings were evaluated. The average daily irrigation depth in the experimental period was 5.2 mm. Based on the results, it is recommended for eucalyptus seedling producers, in less-tech nursery, irrigation management twice per days. (11:00 a.m. and 7:00 p.m.).

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DETERMINAÇÃO DA MÁXIMA CAPACIDADE DE RETENÇÃO DE ÁGUA NO SUBSTRATO PARA PRODUÇÃO DE MUDAS DE EUCALIPTO EM VIVEIRO

FLORESTA ◽

10.5380/rf.v45i4.38334 ◽

2015 ◽

Vol 45 (4) ◽

pp. 745

Author(s):

Sandro Dan Tatagiba ◽

Talita Miranda Teixeira Xavier ◽

Herbert Torres ◽

José Eduardo Macedo Pezzopane ◽

Roberto Avelino Cecílio ◽

...

Keyword(s):

Water Availability ◽

Water Retention ◽

Irrigation Management ◽

Crop Coefficient ◽

Espírito Santo ◽

Management Measures ◽

Randomized Design ◽

Espirito Santo ◽

The City

A escassez de informações referentes ao consumo hídrico de mudas de espécies florestais freqüentemente dificulta o planejamento da irrigação em viveiros comerciais, levando muitas vezes, a adoção de medidas ineficientes de manejo, provocando perda no padrão de qualidade das mudas. Dessa forma, procurou-se neste trabalho investigar a máxima capacidade de retenção de água (MCRA) no substrato em que as mudas de eucalipto podem ser submetidas e determinar o coeficiente de cultivo (Kc) para o clone híbrido de E. urophylla x E. grandis. O estudo foi realizado em casa de vegetação, localizada na área experimental do Programa de Pós-Graduação em Ciências Florestais vinculado ao Centro de Ciências Agrárias da Universidade Federal do Espírito Santo (CCA-UFES) no município de Alegre, ES, montado num delineamento inteiramente casualizado, com cinco tratamentos de disponibilidade hídrica no substrato (90, 80, 70, 60 e 50% da MCRA), com quatro repetições. De acordo com os resultados obtidos, verificou-se que a disponibilidade hídrica no substrato de 70% da MCRA pode ser utilizada para a produção de mudas clonais de eucalipto, sem afetar o crescimento e o padrão de qualidade. O Kc estimado para as mudas de eucalipto em condições de viveiro foi de 1,25. AbstractDetermination of maximum capacity of water retention in substrate for production plants in Eucalyptus nursery. The scarcity of information regarding water consumption of seedlings of forest species often complicates the planning of irrigation in commercial nurseries, often leading the adoption of inefficient management measures, causing loss in the quality of seedlings. Thus, this study sought to investigate the capacity of water retention in the substrate in which the eucalyptus seedlings can be submitted and determine the crop coefficient (Kc) for the hybrid clone of E. urophylla x E . grandis. The study was conducted in a greenhouse located in the experimental area of the Post-Graduation of Forest Sciences bound to the Center for Agrarian Sciences, Federal University of Espírito Santo in the city of Alegre, ES, built in a completely randomized design with five treatments of water availability in the substrate (90, 80, 70, 60 and 50% of MCRA) and four replications. According to the results, it was found that water availability in the substrate MCRA of the 70% can be used for the production of minicutting, without affecting standards of growth and quality. The Kc for eucalyptus seedlings in nursery conditions was 1.25.Keywords: Coefficient of cultivation; irrigation management; Eucalyptus urophylla x E. grandis.

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