EVALUACIÓN DEL EFECTO DE DOS VARIANTES DE RIEGO LOCALIZADO A BAJA PRESIÓN EN EL CULTIVO DE LA LECHOSA EN EL VALLE DE QUIBOR, VENEZUELA.

Irriga ◽  
2007 ◽  
Vol 12 (1) ◽  
pp. 1-13
Author(s):  
Yelitza Garcia ◽  
Juan Jose Brito ◽  
Lisette Gruber

EVALUACIÓN DEL EFECTO DE DOS VARIANTES DE RIEGO LOCALIZADO A BAJA PRESIÓN EN EL CULTIVO DELA LECHOSAENEL  VALLE DE QUIBOR, VENEZUELA.  Yelitza García1;Juan José Brito2; Lisette Gruber1[1] Universidad Centroccidental Lisandro Alvarado, Decanato de Agronomía, Departamento de Ing. Agrícola, Tarabana. Cabudare, Estado Lara, [email protected] Instituto Nacional de Investigaciones Agrícolas, Centro de Investigaciones Agropecuarias del estado Lara, Intercomunal Barquisimeto – Duaca  1 RESUMEN El trabajo se realizó en el Municipio Jiménez, Estado Lara, Venezuela, en una parcela con dos sectores de riego localizado, cada uno con cuatro hileras de50 mde longitud, en uno se instaló el tratamiento con goteros comerciales y en el segundo goteros fabricados manualmente o denominados goteros artesanales. El diseño experimental fue de parcelas divididas, con bloqueo por efecto de pendiente. La siembra fue realizada el día 16 de Noviembre de 2002 con una densidad poblacional de 100 plantas Las variables medidas fueron altura de planta (AP), diámetro de tallo (DT), número de hojas (NH), días de floración (DF) y producción (P). Se determinó la uniformidad de emisión (UE), lámina de riego (LR) y la eficiencia de uso del agua (EUA). Las variables AP, DT, NH y P presentan valores superiores en el tratamiento del gotero artesanal, así mismo los DF son menores en el tratamiento regado por goteros artesanales.La UEde los goteros artesanales y comerciales fue de un 55,53% y 74, 27% respectivamente.La LRaplicada durante el ensayo con los goteros artesanales y comerciales fue de 610 y507 mmrespectivamente.La EUAfue muy superior en el sistema donde se utilizan los goteros artesanales. UNITERMOS: lechosa (Carica papaya L.), emisores, crecimiento.  GARCÍA, Y.;BRITO, J. J.; GRUBER, L. EVALUATION OF THE EFFECT OF TWO LOW PRESSURE  IRRIGATION TREATMENTS  IN A FIELD IN  VALLE DE QUIBOR, VENEZUELA  2 ABSTRACT This experiment was carried out in theJiménezMunicipality, Lara State, Venezuela, in a field with two located irrigation areas with four 50-m long rows each. In one area, a commercial irrigation system was installed whereas the other one had an irrigation system with handmade emitters. The experimental design had divided parcels, with blockade by slope effect.  The planting of 100 plants was on November 16, 2002. The measured variables were plant height (PH), stem diameter (SD), number of leaves (NL), days of flowering (DF) and production (P). Emission uniformity (EU), irrigation level (IL) and water use efficiency (WUE) were determined. Variables for PH, SD, NL and P presented higher values in the treatment with handmade emitters, also the DF are smaller in the treatment watered by handmade emitters.  The EU of the handmade emitters and commercial emitters was 55.53% and 74.27%, respectively.  The applied IL during the treatments with handmade and commercial emitters was 610 and507 mm, respectively.  The WUE was very superior in the irrigation treatment where the handmade emitters were used. KEYWORDS: Carica papaya L., handmade emitters, growth.

2017 ◽  
Vol 39 (2) ◽  
pp. 211 ◽  
Author(s):  
Renan Soares de Souza ◽  
Roberto Rezende ◽  
Tiago Luan Hachmann ◽  
Cláudia Salim Lozano ◽  
André Felipe Barion Alves Andrian ◽  
...  

The objective of this study was to evaluate the effect of nitrogen and potassium silicate on the production and commercial aspects of curly lettuce, Vera cultivar. The experimental design was completely randomized (CRD), with ten treatments and three replications. The treatments, arranged in a factorial design according to the Plan Puebla III matrix (Turrent & Laird, 1975), consisted of the combination of five doses of nitrogen (9; 54; 90; 126, and 171 kg ha-1) and five doses of potassium silicate (1.15; 6.90; 11.50; 16.10, and 21.85 kg ha-1). A control treatment without application of nitrogen and potassium silicate was also inserted. The crop was grown in a greenhouse, and the doses were applied as sidedressing using a drip micro-irrigation system. Total fresh matter, commercial fresh matter, non-commercial fresh matter, number of leaves and commercial trade index were evaluated. The commercial fresh matter and the number of commercial leaves per plant were affected only by nitrogen fertigation and increased linearly with an increase in the dose of nitrogen, with the best responses observed at the highest dose of this element (171 kg ha-1). Potassium silicate only had an effect on non-commercial fresh matter, with no influence on the other characteristics. 


2011 ◽  
Vol 46 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Adriane Marinho de Assis ◽  
Lilian Keiko Unemoto ◽  
Ricardo Tadeu de Faria ◽  
Deonísio Destro ◽  
Lúcia Sadayo Assari Takahashi ◽  
...  

The objective of this work was to evaluate the adaptation of anthurium (Anthurium andraeanum) cultivars as cut flowers in a subtropical area, located in north of Paraná State, Brazil. The Apalai, Ianomami, Kinã, nK 102, Parakanã, Rubi, and Terena cultivars were cultivated in a nursery under 80% shade. The number of leaves and inflorescences, floral stem length, length and width of inflorescences, and spadix length were evaluated. The experimental design was in completely randomized blocks, with six replicates and five plants per plot. During the 18 months evaluated, 'Parakanã' produced 11 inflorescences per plant, whereas the other cultivars produced seven to nine inflorescences per plant. The number of leaves produced per plant was: 'Ianomami', 25; 'Parakanã', 20; 'Apalai' and 'Terena', 15; 'Kinã' and 'Rubi', 11; and 'nK 102', 9. The Apalai, nK 102, Parakanã, and Rubi cultivars are the most recommended as cut flowers; the Ianomami cultivar is not recommended as a cut flower in this region.


2020 ◽  
Vol 69 (1) ◽  
pp. 32-37
Author(s):  
Dryelle Sifuentes Pallaoro ◽  
Cárita Rodrigues de Aquino Arantes ◽  
Amanda Ribeiro Correa ◽  
Elisangela Clarete Camili ◽  
Maria de Fátima Barbosa Coelho

The objective of this study was to verify levels of shade and doses of earthworm humus in the production of Lactuca canadensis L. seedlings.  The experimental design was completely randomized in a 4 x 5 factorial scheme (four levels of shade and five doses of humus).  The different levels were obtained using black polyethylene screen with 35, 50 and 70% shade and in full sun. The substrates were obtained by mixing commercial substrate for vegetables (Vivatto Slim ® plus), with earthworm humus in the proportions of 0, 15, 30, 45 and 60%.  There was no seedlings emergence in the full sun and, the treatment with 50% of shade allows the best development. The substrate without humus and with 60% presented superior results but the higher dose stood out for number of leaves (3.14) and chlorophyll content (32.9%), in 50% of shade. For the other variables, there was no difference between the commercial substrate and 60% of humus, so the commercial substrate can be used in the production of Lactuca canadensis L. seedlings, considering the ratio benefit/cost ratio. 


2014 ◽  
Vol 36 (3) ◽  
pp. 680-685
Author(s):  
Márcio de Carvalho Pires ◽  
Osvaldo Kiyoshi Yamanishi ◽  
José Ricardo Peixoto

This study aimed to evaluate the performance of 'Feizixiao', 'Nuomici', 'Heiye', 'Kway May Pink' and 'Bengal' lychee cultivars topworked onto bearing 'Bengal' trees. The experiments were carried out in commercial orchard at Rio das Pedras Farm in Jundiaí, state of São Paulo. The experimental design consisted of randomized blocks in a subdivided parcel arrangement, in which the parcel consisted of five cultivars and the sub-parcel consisted of six evaluation periods. Five replicates of three plants per parcel and six grafts per plant, (with two grafts per main branch) were used. The trees were approximately 10 years old propagated by air layering and planted with 6 x 4 m (416 plants/ha) spacing. The following characteristics were evaluated: success rate of the grafts, number of shoots, shoot length, number of nodes, number of leaves and chlorophyll content (SPAD). The control ('Bengal'/'Bengal') had the highest grafting success rate with 89.9%. On the other hand, 'Heiye', 'Feizixião', 'Nuomici' and 'Kway May Pink' had, respectively, 60.6, 55.0, 52.6 and 47.0% grafting success rates. All of the shoot grafts had normal growth with no signs of incompatibility. Therefore, the cultivars studied are compatible with 'Bengal' and may be used on commercial orchards.


2016 ◽  
Vol 12 (18) ◽  
pp. 24
Author(s):  
Florita O. Odivilas

This study was conducted to find out the effect of fertilizers on the performance of two hybrids of Euphorbia as indicated by growth and flowering performance. The experimental design with controlled variables was used in the study. The use of organic fertilizers like the use of animal dungs or wastes was proven effective based on the different trials made. In terms of the effect of the fertilizers in the growth performance, there were significant differences on plant height, stem girth, number of leaves, and number of shoots during the 20th, 50th and 80th days of observations. The number of flowers was found to have significant differences in all stages. When measured during the 80th day of observation, significant differences were shown in the size of flowers. However, insignificant difference was shown in the diameter of flower bracts. As to the growth parameters, carabao manure yielded more leaves, and shoots and taller Euphorbia Orchid. It also produced bigger stem girths, wider and longer leaf sizes of Siam Ruby hybrid. As to flowering parameters, carabao manure influenced the growth of more number of flower clusters and bigger sizes of flowers of Euphorbia Orchid. On the other hand, chicken manure also influenced the growth of more number of flowers per cluster of Siam Ruby during the 50th day observation and carabao manure during the 20th day observation.


Author(s):  
Dessie Gieta Amare ◽  
Zigijit Kassa Abebe

Deficit irrigation is a strategy which could be applied to utilize water efficiently. The goal of the article was to review and examine different irrigation deficit to compare its crop morphological characters, yield, water productivity and water use efficiency under different crop type. The overall idea and results are very actual and useful over the world in the semi-arid and arid area interms of water managment and better economic return per applied water.The maximum production in dryland, tomato should be irrigated using drip irrigation system with 100%ETc watering amount [17]. On the other hand 85%, 75% and 30% are also effective in terms of water saving and yield. 85%ETc irrigation level water applied system appears to be a promising alternative for water conservation and labor saving with negligible trade-off in yield of maize [15]. The application of deficit irrigation (75%ETc) could be adopted in lettuce production [16]. Form the review I have seen that The WP increased as the irrigation level reduced.


2020 ◽  
Vol 42 (5) ◽  
Author(s):  
Diogo Barreto Magalhães ◽  
Sérgio Luiz Rodrigues Donato ◽  
Marcelo Rocha dos Santos ◽  
Cleiton Fernando Barbosa Brito ◽  
Varley Andrade Fonseca ◽  
...  

Abstract Yield-improving and water-saving techniques assume great importance in the cultivation of banana plants under semiarid regions, prone to greater climate variability. The objective of this study was to evaluate yield and water-use efficiency (WUE) response of ‘Prata-Anã’ banana plants to combinations of plant densities and irrigation levels: three irrigation levels, 50, 75 and 100% crop evapotranspiration (ETc), and four plant densities, 1,666 (3.0 x 2.0 m), 2,083 (3.0 x 1.6 m), 2,666 (3.0 x 1.25 m) and 3,333 (3.0 x 1.0) plants ha-1, evaluated in two production cycles. The treatments were laid out in a randomized block design with four replicates. Increasing plant density up to 3,333 plants ha-1 induced reductions in number of leaves at harvest and some yield components; also, longer cycles, and increased yields were observed while maintaining fruit marketable size, regardless of the irrigation level used. Using an irrigation level at 50%ETc and a plant density of 3,333 plants ha-1 led to an increase in WUE of 313.92% in the first cycle and 295.27% in the second cycle compared with 1,666 plants ha-1 irrigated at 100% ETc. Higher yields and WUE can be achieved by using a plant population density of 3,333 plants ha-1 and irrigation levels below 100%ETc.


Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 66 ◽  
Author(s):  
Welson Lima Simões ◽  
Daniela Siqueira Coelho ◽  
Moisés Alves Souza ◽  
Marcos Antônio Drumond ◽  
Joston Simão Assis ◽  
...  

ASPECTOS MORFOFISIOLÓGICOS DO GIRASSOL IRRIGADO POR GOTEJAMENTO NO SUBMÉDIO SÃO FRANCISCO WELSON LIMA SIMÕES1; DANIELA SIQUEIRA COELHO2; MOISÉS ALVES SOUZA3; MARCOS ANTÔNIO DRUMOND4; JOSTON SIMÃO ASSIS5 E JAIR ANDRADE LIMA6 1Eng. Agrônomo, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Agrícola e Ambiental, Doutoranda, Universidade Federal Rural de Pernambuco, Recife-PE, CEP 52171-900, email:[email protected]ólogo, Mestre, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Florestal, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Agrônomo, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]ólogo, Universidade de Pernambuco, Petrolina-PE, CEP 56328-903, email: [email protected]  1 RESUMO O objetivo desse trabalho foi avaliar a influência de diferentes lâminas de irrigação e arranjos de gotejadores nas características morfofisiológicas de variedades de girassol. O delineamento experimental foi em blocos casualizados dispostos em esquema fatorial 2x2x4, considerando duas variedades de girassol (Hélio 251 e Hélio 360), dois arranjos das linhas de gotejo (fileiras simples e fileiras duplas) e quatro lâminas de irrigação (75, 90, 105 e 120% da ETc), com três repetições. Foram avaliados altura, diâmetro do caule, número de folhas, peso do capítulo, peso de mil aquênios, produtividade e respostas fisiológicas das plantas. A partir dos resultados obtidos, foi observado que, no geral, a lâmina correspondente a 100% da ETc proporcionou as melhores respostas para o cultivo das variedades de girassol Hélio 251 e Hélio 360. Considerando a não diferença significativa entre os arranjos das linhas de gotejadores, o de fileiras duplas torna-se o mais viável para o cultivo de girassol, tendo em vista sua maior economia na instalação do sistema de irrigação. O teor de óleo dos aquênios não é influenciado pela disponibilidade de água para as plantas de girassol.  Palavras-chave: Helianthus annuus L., produtividade, trocas gasosas, teor de óleo  SIMÕES, W. L; COELHO, D. S.; SOUZA, M. A.; DRUMOND, M. A.; ASSIS, J. S; LIMA, J. A.MORPHOPHYSIOLOGICAL ASPECTS OF SUNFLOWER IRRIGATION DRIP IN SUBMIDDLE OF THE SÃO FRANCISCO  2 ABSTRACT  The aim of this study was to evaluate the influence of different irrigation drip in single and double rows on morphological and physiological characteristics of sunflower varieties. The experimental design was randomized blocks in a factorial 2x2x4 considering two varieties (Hélio 251 e Hélio 360), two provisions of drip lines (single and double rows), four irrigation levels (75, 90, 105 and 120% of ETc) and three replications. At the end of the experiment, plant height, stem diameter, number of leaves, weight of the chapter, a thousand achenes weight, yield, and gas exchange. From the results obtained, it was observed that, in general, the blade corresponding to 100% of ETc provided better answers in the cultivation of sunflower varieties Hélio 251 e Hélio360. A irrigated by drip lines available in double rows is more feasible for sunflower cultivation in view of its greater savings in installation of the irrigation system and its effect is similar to that of single rows. The variety has 360 Helium oil content higher than 251 helium. keywords: Helianthus annuus L., productivity, gas exchange, oil content.


2021 ◽  
Vol 10 (4) ◽  
pp. e54810414394
Author(s):  
Patricia dos Santos Zomerfeld ◽  
Natane Bonfim Lima ◽  
Guilherme Augusto Biscaro ◽  
Anamari Viegas de Araujo Motomiya ◽  
Aline Baptista Borelli ◽  
...  

Radish yield and quality are factors influenced by water stress that may occur during periods of drought or irrigation handled inappropriately, interfering negatively in plants development, producing radishes of inferior quality and in lesser quantity. In addition to irrigation, which makes water available in the system, it is important to maintain it with the use of water-retaining products such as hydrogel. The aim of this work was to evaluate radish yield, submitted to three different hydrogel doses combined with two water slides. The experimental design was in factorial scheme 3 x 2, with three water slides (50%, 75% and 100% Eto – reference evapotranspiration estimate) and two hydrogel doses (40 and 60 g m-2) with four replicates. Number of leaves, horizontal and vertical root diameter (mm), total and shoot length (cm), fresh mass of root and shoot (g), dry mass of shoot and root (g) and yield (t ha-1) were evaluated. The best results, regarding radish production and development, were obtained when using 50% of Eto with 60 g m-2 of hydrogel in combination. Thus, radish cultivation in oxisoil was influenced by the use of hydrogel, which provided a more efficient water level use.


Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 78 ◽  
Author(s):  
Darío Fernando Pineda Suárez ◽  
Rodrigo Máximo Sánchez Román

CONSUMO DE ÁGUA EM ARROZ IRRIGADO POR INUNDAÇÃO EM SISTEMA DE MULTIPLAS ENTRADAS  DARÍO FERNANDO PINEDA SUÁREZ, RODRIGO MÁXIMO SÁNCHEZ-ROMÁN      Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, SP, [email protected], [email protected]  1 RESUMO O arroz é o cereal mais consumido no mundo e o método de irrigação por inundação é o mais empregado devido às condições agronômicas criadas que favorecem a obtenção de maior produtividade, mas também a um maior consumo de água. Nesse sentido, o objetivo deste estudo foi avaliar o consumo de água no sistema de irrigação com distribuição de múltipla entrada na cultura do arroz. O experimento foi realizado durante a safra agrícola 2013/14 na área da várzea do Departamento de Engenharia Rural da Faculdade de Ciências Agronômicas da Universidade Estadual Paulista “Júlio de Mesquita Filho”, no Campus Botucatu-SP, irrigando-se o arroz pelo método de irrigação por inundação intermitente dos tabuleiros e com altura de lâmina de água de 10 cm, com dois tratamentos, denominados MIRI para o tratamento de irrigação por distribuição de múltipla entrada e CONV para o tratamento de inundação convencional. O consumo total de água no tratamento MIRI totalizou uma lâmina de água de 1.754,8 mm, sendo este 8,62% menor que o tratamento CONV. Na eficiência no uso da água, com o tratamento MIRI obteve-se uma média de 4,11 kg ha-1 mm-1, sendo 9,73% maior que o CONV. Concluindo-se que MIRI é uma alternativa viável do ponto de vista de economia no uso da água para a produção de arroz.  Unitermospalavras-chave: Lâmina de água, Inundação Intermitente, Distribuição, Balanço Hídrico, Eficiência.  2 ABSTRACT PINEDA SUÁREZ, D. F.; SANCHEZ ROMÁN, R. M. WATER CONSUMPTION IN FLOODED RICE THROUGH THE SYSTEM OF MULTIPLE INLET Rice is the most consumed cereal worldwide and flood irrigation method is the most used due to the agronomic conditions that not only favor higher productivity, but also higher water consumption. The objective of this study was to evaluate water consumption in an irrigation system with multiple inlet distribution in the rice culture. The experiment was developed during crop 2013/14 in the lowland area of the Rural Engineering Department at the School of Agronomical Sciences of São Paulo State University “Júlio de Mesquita Filho”, Campus Botucatu - São Paulo with intermittent flood and water depth of 10 cm. Two treatments were studied, the former called MIRI for the irrigation treatment by distribution of multiple inlet, and the latter CONV for the conventional flooded treatment. The total water consumption in the treatment MIRI was of 1.754,8 mm, which is 8,62 % lower than CONV treatment. The best water use efficiency was obtained with the MIRI treatment had an average of 4,11 kg ha-1 mm-1, being 9,73 % higher than the CONV. Therefore, it can be concluded that the MIRI system is a viable alternative to reduce the use of water rice production. Keywords:Depth of water, Intermittent Flooding, Distribution, Water Balance, Efficiency.


Sign in / Sign up

Export Citation Format

Share Document