Carrot yield and water-use efficiency under different mulching, organic fertilization and irrigation levels

ABSTRACT This study was carried out to evaluate the contributions to the optimization of water use in a carrot crop under different forms of mulch using Gliricidia sepium, fertilization with castor bean cakes and irrigation water depths. The experiment was conducted in Seropédica, RJ, Brazil (22º 46’ S and 43º 41’ W), from June to September 2010. The experiment was conducted using a split-split-plot scheme (5 x 3 x 2), with four replicates. The five plots had irrigation depths corresponding to 0, 43, 72, 100 and 120% of crop evapotranspiration (ETc); the three subplots contained the different forms of mulch (whole leaves (WL) and chopped leaves and branches (CLB)) and the absence of mulch (AM); and the two sub-subplots contained either the presence (PF) or absence of fertilization (AF). Using time domain reflectometry (TDR) in the irrigation management, water depths ranging from 67.8 to 285.5 mm were applied. The use of mulch in association with fertilization led to higher yields and water-use efficiency (WUE) of the carrot plants, and the mulch composed of WL performed best. The application of irrigation depths corresponding to 97% of ETc promoted the highest carrot yields, although the highest values of WUE were observed, with irrigation depths corresponding to a range from 51 to 68% of ETc.

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Biomass allocation and water use efficiency in fertigated sweet pepper

Engenharia Agrícola ◽

10.1590/s0100-69162012000200011 ◽

2012 ◽

Vol 32 (2) ◽

pp. 315-325 ◽

Cited By ~ 2

Author(s):

Francimar da S. Albuquerque ◽

Ênio F. de F. e Silva ◽

Marcus F. F. N. Nunes ◽

Amanda E. R. de Souza

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Biomass Allocation ◽

Irrigation Management ◽

Sweet Pepper ◽

Crop Evapotranspiration ◽

Plant Life ◽

Dry Biomass ◽

Irrigation Depth ◽

Use Efficiency

The use of productivity information and efficiency of water use is important for the economic analysis of production and irrigation management, and also helps the economy of water use, which is essential to plant life. The objective of this study was to evaluate the biomass allocation, the water use efficiency and water content in fruits of sweet pepper cropped under the influence of irrigation blades and potassium doses. The statistic design was a completely randomized factorial scheme (5 x 2) and four replications, with five irrigation blades (80; 90; 100; 110 and 120% of crop evapotranspiration) and two levels of potassium (80 and 120 kg K2O ha-1 ), applied according to phenological phase, through a system of drip irrigation with self-compensated drippers, installed in a battery of 40 drainage lysimeters cultivated with sweet pepper (Maximos F1), at Federal Rural University of Pernambuco (UFRPE), Recife, state of Pernambuco, Brazil. The dry biomass production of sweet pepper was influenced by fertigation regimes; when it was set the lowest dose, estimates of the efficiency of water use and moisture in the fruit occurred with the use of irrigation depth of 97 and 95% of ETc, respectively.

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Oil Yield of Sunflower Cultivated With Different Water Depths and Nitrogen Doses

Journal of Agricultural Science ◽

10.5539/jas.v11n4p449 ◽

2019 ◽

Vol 11 (4) ◽

pp. 449

Author(s):

Jonas de O. Freire ◽

Marcelo T. Gurgel ◽

José F. de Medeiros ◽

Kaline D. Travassos ◽

Neyton de O. Miranda ◽

...

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Standard Dose ◽

Response Surfaces ◽

Oil Yield ◽

Crop Evapotranspiration ◽

Climate Conditions ◽

Irrigation Depth ◽

Use Efficiency ◽

Water Depths

Sunflower is adapted to different soil and climate conditions, but its water and nitrogen requirements are not well defined. This study was carried out in Apodi, Rio Grande do Norte, Brazil, to evaluate the oil yield of sunflower in response to irrigation depth and nitrogen dose. A randomized block experimental design was used with a factorial scheme with four replications. The factors tested were irrigation depths corresponding to 58, 80, 100 and 120% of crop evapotranspiration (water-use efficiency variable), and nitrogen doses corresponding to 40, 100, 200 and 370% of the standard dose. Data were submitted to analysis of variance by the F-test, followed by the Tukey test of means and regression analysis. The increase in the water depth until 100% ETc and in the nitrogen dose until 260 kg ha-1 promoted increase in the values of all variables, but at higher nitrogen doses the variables decreased. The response surfaces showed stronger response to nitrogen dose for the water depths around 100% ETc and for the lower nitrogen doses, and greater water use efficiency for the production of oil for the water depths around 100% ETc, independently of nitrogen dose.

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PHENOLOGY, YIELD AND WATER USE EFFICIENCY OF SUNFLOWER IN FUNCTION OF ENVIRONMENT AND NITROGEN / FENOLOGIA, RENDIMIENTO Y EFICIENCIA EN EL USO DEL AGUA EN FUNCION DEL AMBIENTE Y NITRÓGENO / PHÉNOLOGIE, RENDEMENT ET EFFICACITÉ DE L’UTILISATION DE L’EAU EN FONCTION DES ENVIRONS ET DE L’AZOTE CHEZ LE TOURNESOL

Helia ◽

10.1515/helia.2001.24.35.111 ◽

2001 ◽

Vol 24 (35) ◽

pp. 111-128

Author(s):

Víctor M. Olalde G. ◽

J. Alberto Escalante E. ◽

Angel A. Mastache L.

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Rainy Season ◽

Interactive Effect ◽

Growth Yield ◽

Growth Cycle ◽

Crop Evapotranspiration ◽

Hot Environment ◽

Crop Cycle ◽

Use Efficiency

SUMMARYDuring the rainy season of 1998, a field experiment was established in Cocula, Guerrero (hot subhumid climate, Awo) and in Montecillo, México (semiarid climate, BS1), to evaluate the effect of nitrogen (0, 10 and 20 g m-2) and environment on phenology, yield and its components, water use efficiency (WUE), and crop evapotranspiration (ETc) and heat units (HU) accumulated during the growth cycle of sunflower (Helianthus annuus L.) cv. Victoria. The crop was planted on June 1 at a density of 7.5 pl m-2 in both climates. In Cocula, maximum and minimum temperatures were more extreme and rainfall was more intense, while soil was poor in total nitrogen, compared with Montecillo. Crop growth, yield and its components, and water use efficiency were affected significantly by the environment, nitrogen and the interaction environment * nitrogen. The crop cycle in the hot environment was 36 days shorter, with a greater accumulation of HU and ETc. Yield and its components and water use efficiency were significantly higher in Cocula. Nitrogen positively affected the evaluated variables. The interactive effect of environment * nitrogen was observed clearly, since in Cocula there was response to the application of nitrogen in most of the variables evaluated, while in Montecillo there was not.

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Yield, water use efficiency, and yield response factor in carrot crop under different irrigation depths

Ciência Rural ◽

10.1590/0103-8478cr20150363 ◽

2016 ◽

Vol 46 (7) ◽

pp. 1145-1150 ◽

Cited By ~ 3

Author(s):

Daniel Fonseca de Carvalho ◽

Dionizio Honório de Oliveira Neto ◽

Luiz Fernando Felix ◽

José Guilherme Marinho Guerra ◽

Conan Ayade Salvador

Keyword(s):

Water Use Efficiency ◽

Soil Water ◽

Water Use ◽

Block Design ◽

Time Domain Reflectometry ◽

Yield Response ◽

Response Factor ◽

Use Efficiency ◽

The Mean ◽

Yield Response Factor

ABSTRACT: The aim of the present study was to evaluate the effect of different irrigation depths on the yield, water use efficiency (WUE), and yield response factor (Ky) of carrot (cv. 'Brasília') in the edaphoclimatic conditions of Baixada Fluminense, RJ, Brazil. Field trials were conducted in a Red-Yellow Argisol in the 2010-2011period. A randomized block design was used, with 5 treatments (depths) and 4 replicates. Depths were applied by drippers with different flow rates, and the irrigation was managed by time domain reflectometry (TDR) technique. The reference (ETo) and crop (ETc) evapotranspiration depths reached 286.3 and 264.1mm in 2010, and 336.0 and 329.9mm in 2011, respectively. The root yield varied from 30.4 to 68.9t ha-1 as a response to treatments without irrigation and 100% replacement of the soil water depth, respectively. Values for WUE in the carrot crop varied from 15 to 31kg m-3 and the mean Ky value was 0.82. The mean values for Kc were obtained in the initial (0.76), intermediate (1.02), and final (0.96) stages. Carrot crop was influenced by different water depths (treatments) applied, and the highest value for WUE was obtained for 63.4% of soil water replacement.

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INFLUÊNCIA DA COBERTURA MORTA NA EVAPOTRANSPIRAÇÃO, COEFICIENTE DE CULTIVO E EFICIÊNCIA DE USO DE ÁGUA DO MILHO CULTIVADO EM CERRADO

Irriga ◽

10.15809/irriga.2016v21n2p352-364 ◽

2018 ◽

Vol 21 (2) ◽

pp. 352

Author(s):

HIPÓLITO MURGA-ORRILLO ◽

WELLINGTON FARIAS ARAUJO ◽

CARLOS ABANTO RODRIGUEZ ◽

RICARDO MANUEL BARDALES LOZANO ◽

ROBERTO TADASHI SAKAZAKI ◽

...

Keyword(s):

Zea Mays ◽

Water Use Efficiency ◽

Water Use ◽

Water Consumption ◽

Irrigation Management ◽

Crop Coefficient ◽

Ground Cover ◽

Bare Soil ◽

Crop Cycle ◽

Use Efficiency

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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EFEITO DE DIFERENTES LÂMINAS DE IRRIGAÇÃO NAS VARIÁVEIS DE DESENVOLVIMENTO E PRODUÇÃO DO CAFEEIRO IRRIGADO POR PIVÔ CENTRAL

Irriga ◽

10.15809/irriga.2015v20n3p528 ◽

2015 ◽

Vol 20 (3) ◽

pp. 528-543 ◽

Cited By ~ 1

Author(s):

Marcelo Rossi Vicente ◽

Everardo Chartuni Mantovani ◽

ANDRÉ LUÍS TEIXEIRA FERNANDES ◽

FÁBIO TEIXEIRA DELAZARI ◽

EDMILSON MARQUES FIGUEREDO

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Coffea Arabica ◽

Block Design ◽

Irrigation Management ◽

Randomized Block Design ◽

Center Pivot ◽

Irrigation Depth ◽

Use Efficiency ◽

Level Of Significance

EFEITO DE DIFERENTES LÂMINAS DE IRRIGAÇÃO NAS VARIÁVEIS DE DESENVOLVIMENTO E PRODUÇÃO DO CAFEEIRO IRRIGADO POR PIVÔ CENTRAL MARCELO ROSSI VICENTE1; EVERARDO CHARTUNI MANTOVANI2; ANDRÉ LUÍS TEIXEIRA FERNANDES3; FÁBIO TEIXEIRA DELAZARI4 E EDMILSON MARQUES FIGUEREDO5 1 Instituto Federal do Norte de Minas Gerais, Salinas, MG, [email protected] Departamento de Engenharia Agrícola, Universidade Federal de Viçosa, Viçosa, MG, [email protected] Universidade de Uberaba, Uberaba, MG, Fábio Teixeira Delazari, [email protected] Departamento de Fitotecnia, Universidade Federal de Viçosa, Viçosa, MG, [email protected] Bahia Farm Show, Luís Eduardo Magalhães, BA, [email protected] 1 RESUMO O presente trabalho foi conduzido com objetivo de avaliar o efeito de diferentes lâminas de irrigação nas variáveis de produção, estádios maturação de frutos e eficiência no uso da água pela cultura do cafeeiro irrigado por pivô central equipado com emissores LEPA, na região Oeste da Bahia. Realizou-se o trabalho na fazenda Café do Rio Branco, localizada em Barreiras - BA em cafeeiros adultos da variedade Catuaí IAC 144. O experimento obedeceu ao delineamento de blocos casualizados, composto de cinco tratamentos correspondentes à 70, 85, 100, 125 e 150% da lâmina de irrigação determinada pelo software Irriplus. As produtividades, os estádios de maturação dos frutos e eficiência no uso da água do cafeeiro foram submetidos à análise de variância e regressão, em que os modelos foram escolhidos baseados na significância dos coeficientes de regressão utilizando-se o teste t de 1 a 10% de probabilidade. Diante dos resultados obtidos, pode-se concluir que, a produtividade da cultura do café foi expressivamente dependente da lâmina de água aplicada, sendo que a maior produtividade (60 sc ha-1) foi alcançada com a lâmina de irrigação acumulada de 661 mm ano-1, correspondente à 96% da lâmina de irrigação determinada pelo software Irriplus. A lâmina que proporcionou a máxima porcentagem de frutos cereja (44,1%) foi de 723 mm ano-1 (105%). A lâmina que proporcionou a maior eficiência no uso da água foi de 480 mm ano-1 (70%). Palavras-Chave: Coffea arabica, manejo da irrigação, emissor LEPA, uso eficiente da água. VICENTE, M. R.; MANTOVANI, E. M.; FERNANDES, A. L. T.; DELAZARI, F. T.; FIGUEREDO, E. M.EFFECTS OF DIFFERENT LEVELS OF IRRIGATION DEPTHS ON GROWTH AND PRODUCTION VARIABLES OF COFFEE UNDER CENTER PIVOT IRRIGATION 2 ABSTRACT This study aimed to evaluate the effect of different irrigation depths on yield, ripening stages and water use efficiency by the coffee crop irrigated by center pivot with LEPA emitters in western Bahia. The experiment was carried out at the Café Rio Branco farm, in Barreiras city, Bahia state, using adult coffee trees of cv. Catuaí IAC 144. A completely randomized block design was used with five treatments consisting of 70, 85, 100, 125 and 150 % of ETc, determined by the Irriplus software. Data of yield, fruit ripening stage and water use efficiency were evaluated using analyses of variance and regression. Models were chosen based on level of significance of regression coefficients using the Student´s t-test, 1 to 10% probability. Based on the results, coffee crop yield was highly dependent on the water depth applied. The highest yield (3.6 ton/ha) was achieved using accumulated irrigation depth of 661 mm year -1 (96 % of Etc). Water depths of 723 mm year-1 (105 %) and 480 mm year-1 (70% ETc) provided the highest percentage of cherry fruit (44.1%) and the highest water use efficiency, respectively. Keywords: Coffea arábica, irrigation management, LEPA emitter, water use efficiency.

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Strategies for Improved Water Use Efficiency (WUE) of Field-Grown Lettuce (Lactuca sativa L.) under a Semi-Arid Climate

Agronomy ◽

10.3390/agronomy10050668 ◽

2020 ◽

Vol 10 (5) ◽

pp. 668 ◽

Cited By ~ 5

Author(s):

Nicola Michelon ◽

Giuseppina Pennisi ◽

Nang Ohn Myint ◽

Francesco Orsini ◽

Giorgio Gianquinto

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Lactuca Sativa ◽

Irrigation Water ◽

Irrigation System ◽

Arid Climate ◽

Lactuca Sativa L ◽

Use Efficiency ◽

Irrigation Levels ◽

Semi Arid

Water use efficiency is a main research target in agriculture, which consumes 70% of global freshwater. This study aimed at identifying sustainable water management strategies for the lettuce crop in a semi-arid climate. Three independent experiments were carried out on a commercial variety of lettuce (Lactuca sativa L.) by applying different irrigation levels based on crop evapotranspiration (ETc), estimated through both the Hargreaves–Samani and Penman–Monteith equations. In the first experiment, one treatment was also guided by soil moisture sensors. In the second and third experiments, a factorial combination was used, combining the different irrigation levels with two soil mulching treatments, namely soil without mulch, and soil mulched with dried rice straw residues. The application of different irrigation levels significantly affected plant growth, yield, and physiology. Both the adoption of sensors for guiding irrigation and the application of mulching with straw promoted higher yield. As the irrigation water level was reduced, the WUE (water use efficiency) increased. WUE was also increased by covering the soil with mulch. The experiments point out that accurate management of irrigation water using a drip irrigation system associated with soil mulching increases yield and improves the WUE of lettuce crops in the Central Dry Zone, Myanmar.

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Stretching water – Queensland's water use efficiency cotton and grains adoption program

Water Science & Technology ◽

10.2166/wst.2003.0440 ◽

2003 ◽

Vol 48 (7) ◽

pp. 191-196 ◽

Cited By ~ 1

Author(s):

P.J. Goyne ◽

G.T. McIntyre

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Best Management Practices ◽

Management Practices ◽

Irrigation Management ◽

Public Image ◽

Best Management ◽

Irrigation Water Use ◽

Use Efficiency ◽

On Farm

The Cotton and Grains Adoption Program of the Queensland Rural Water Use Efficiency Initiative is targeting five major irrigation regions in the state with the objective to develop better irrigation water use efficiency (WUE) through the adoption of best management practices in irrigation. The major beneficiaries of the program will be industries, irrigators and local communities. The benefits will flow via two avenues: increased production and profit resulting from improved WUE and improved environmental health as a consequence of greatly reduced runoff of irrigation tailwater into rivers and streams. This in turn will reduce the risk of nutrient and pesticide contamination of waterways. As a side effect, the work is likely to contribute to an improved public image of the cotton and grain industries. In each of the five regions, WUE officers have established grower groups to assist in providing local input into the specific objectives of extension and demonstration activities. The groups also assist in developing growersÕ perceptions of ownership of the work. Activities are based around four on-farm demonstration sites in each region where irrigation management techniques and hardware are showcased. A key theme of the program is monitoring water use. This is applied both to on-farm storage and distribution as well as to application methods and in-field management. This paper describes the project, its activities and successes.

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