Coupling Hydrus 2D/3D and AquaCrop Models for Simulation of Water Use in Cowpea (Vigna Unguiculata (L.) Walp)

2021 ◽  
pp. 53-63
Author(s):  
Edwin Kimutai Kanda ◽  
Aidan Senzanje ◽  
Tafadzwanashe Mabhaudhi
Keyword(s):  
Water Use ◽  
Vigna Unguiculata

Rotation and tillage effects on yield of pearl millet (Pennisetum glaucum) and cowpea (Vigna unguiculata), and aspects of crop water balance and soil fertility in a semi-arid tropical environment

1995 ◽  
Vol 124 (1) ◽  
pp. 39-44 ◽  
Author(s):  
M. C. Klaij ◽  
B. R. Ntare
Keyword(s):  
Soil Fertility ◽  
Pearl Millet ◽  
Water Use ◽  
Vigna Unguiculata ◽  
Pennisetum Glaucum ◽  
No Tillage ◽  
Crop Water ◽  
Total N ◽  
Post Harvest ◽  
Crop Water Use

SUMMARYA 4-year field experiment was conducted from 1986 to 1989 in Niger to determine the effects of pre- and post-harvest tillage and rotation of pearl millet (Pennisetum glaucum (L). R. Br.) and cowpea (Vigna unguiculata (L.) Walp.) on crop yield, crop water use and soil fertility on a sandy soil. Presowing tillage increased grain and crop residue yields over the traditional system of no tillage. Post-harvest tillage resulted in lower yields than pre-sowing tillage during the last 2 years of the experiment. Millet-cowpea rotation increased yield and there were no important tillage × rotation interactions. Crop water use was similar for a dry and a wet year, but less water was held in the profile after the harvest of cowpea. Compared to pre-sowing tillage and no tillage, post-harvest tillage increased the amount of water conserved until the next season. In all treatment combinations, soil organic matter and total N content both declined on average by 62%, and soil pH (KCI) decreased from 4·6 to 4·3.

Growth, yield and plant-water relations of four cowpea (Vigna unguiculata) cultivars in the Sahel

1996 ◽  
Vol 126 (2) ◽  
pp. 183-190 ◽  
Author(s):  
M. V. K. Sivakumar ◽  
B. R. Ntare ◽  
J. M. Roberts
Keyword(s):  
Stomatal Conductance ◽  
Water Use ◽  
Vigna Unguiculata ◽  
Growth Yield ◽  
Net Photosynthesis ◽  
Photon Flux ◽  
Photon Flux Density ◽  
Dual Purpose ◽  
Area Index ◽  
Photosynthetic Rates

SUMMARYThe response of four cowpea (Vigna unguiculata(L.) Walp.) cultivars to the warm, semi-arid tropical environment at the ICRISAT Sahelian Center at Sadore, Niger was studied during 1985 and 1986 interms of leaf area index (LAI), dry matter (DM) accumulation, net photosynthesis, stomatal conductance, total water use and yield. Among the three improved cultivars, IT82D–716 is early and erect, cv. IT83S–947 is early and spreading and cv. TVX4659–03E is a medium-duration, highyielding, dual-purpose type. The local cv. Sadore Local is a long-duration, photosensitive, spreading type used mainly for fodder. In both years, Sadore Local recorded the highest LAI. IT82D–716 and IT83S–947 produced < 1·3 t/ha of DM in both years, whereas TVX 4659–03E produced > 2 t/ha of DM and proved superior to Sadore Local in partitioning DM into pods. The four cultivars did not differ significantly either in stomatal conductance or in net phytosynthetic rates. Observed maximum photosynthetic rates of c. 20 μmol/m2/s lie at the bottom of the range 21–38 μmol/m2/s reported for 31 cowpea genotypes in an earlier study. Photosynthetic rates increased with increasing photon flux density. TVX4659–03E had an advantage in total seed plus fodder yields while the local cultivar gave significantly greater fodder yields in both years. Seed and fodder yields, as well as water-use efficiency, confirmed the advantages offered by the dual-purpose cultivar TVX4659–03E. Future breeding efforts in the Sahel should focus on dual-purpose (grain/fodder) cowpea types.

Carbohydrate partitioning in relation to whole plant production and water use of Vigna unguiculata (L.) Walp.

Oecologia ◽  
1983 ◽  
Vol 58 (2) ◽  
pp. 169-177 ◽  
Author(s):  
E. D. Schulze ◽  
K. Schilling ◽  
S. Nagarajah
Keyword(s):  
Water Use ◽  
Vigna Unguiculata ◽  
Plant Production ◽  
Carbohydrate Partitioning ◽  
Whole Plant

scholarly journals EVAPOTRANSPIRAÇÃO E COEFICIENTE DE CULTIVO DO FEIJÃO-CAUPI CULTIVADO EM SOLO DO CERRADO SUBMETIDO À COBERTURA MORTA

Irriga ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 172 ◽  
Author(s):  
HIPÓLITO MURGA-ORRILLO ◽  
Wellington Farias Araújo ◽  
Paulo Roberto Ribeiro Rocha ◽  
Roberto Tadashi Sakazaki ◽  
Luiz Fernandes Silva Dionisio ◽  
...  
Keyword(s):  
Water Use ◽  
Vigna Unguiculata ◽  
Water Consumption ◽  
Developmental Stages ◽  
Crop Coefficient ◽  
Soil Conditions ◽  
Water Parameters ◽  
Mulch Cover ◽  
Drainage Lysimeter

EVAPOTRANSPIRAÇÃO E COEFICIENTE DE CULTIVO DO FEIJÃO-CAUPI CULTIVADO EM SOLO DO CERRADO SUBMETIDO À COBERTURA MORTA  HIPÓLITO MURGA-ORRILLO1; WELLINGTON FARIAS ARAÚJO2; PAULO ROBERTO RIBEIRO ROCHA3; ROBERTO TADASHI SAKAZAKI4; LUIZ FERNANDES SILVA DIONISIO5 E ANA ROSA POLO-VARGAS6  1Engenheiro Agrônomo, Prof. Invitado, Universidad Nacional de Cajamarca, (UNC), Av. Atahualpa Nº 1050- Carretera Cajamarca-Baños del Inca, Cajamarca, Perú. [email protected] Agrônomo, Prof. Dr. Associado da UFRR/CCA, Boa Vista, RR. [email protected] Agrônomo, Prof. Adjunto da UFRR/CCA, Boa Vista, RR. [email protected] Agrônomo, Doutorando na UFRR/CCA, Boa Vista, RR. [email protected] Florestal, Doutorando na UFRA, Belém, PA. [email protected] Agrônomo, Graduada na UNC, Av. Atahualpa Nº 1050- Carretera Cajamarca-Baños del Inca, Cajamarca, Perú. [email protected] 1        RESUMO O conhecimento dos parâmetros hídricos de uma cultura é fundamental para o incremento da produtividade sem o desperdício de água. Objetivou-se com o presente trabalho determinar a evapotranspiração (ETc) e o coeficiente de cultivo (Kc) da cultura de feijão-caupi (Vigna unguiculata L.) cv. Novaera, em condições de solo com e sem o uso de cobertura morta. O experimento foi conduzido no campus Cauamé da Universidade Federal de Roraima, em Boa Vista, RR, entre os meses de abril a julho de 2014. A evapotranspiração de cultivo (ETc) foi obtida por meio de lisímetro de drenagem. Os resultados evidenciaram que a ETc do feijão-caupi para ciclo da cultura sem e com cobertura morta foram de 311,0 e 260,4 mm, com valores médios de 3,5 e 3,0 mm dia-1, respetivamente. O estádio fenológico de maior demanda hídrica foi o reprodutivo atingindo valores de 5,4 mm dia-1 em solo sem cobertura e 4,9 mm dia-1 em solo com cobertura. Os Kc's pelos estádios de desenvolvimento, inicial (I), crescimento (II), reprodutivo (III), e final (IV) pelo método de Penman-Monteith foram equivalentes à 0,42; 0,82; 1,60 e 0,79 em solo sem cobertura morta, e 0,30; 0,73; 1,46 e 0,56 em solo com cobertura morta. Semelhante, o método de Jensen-Haise apresentou valores de 0,38; 0,76; 1,31 e 0,61 em solo sem cobertura morta e 0,29; 0,67; 1,19 e 0,42 em solo com cobertura morta. Palavras-chave: Vigna unguiculata. Otimização de uso de água. Consumo hídrico.  MURGA-ORRILLO, H.; ARAÚJO, W. F.; ROCHA, P. R. R.; SAKAZAKI, R. T.; DIONISIO, L. F. S; POLO-VARGAS, A. R.EVAPOTRANSPIRATION (ETc) AND CROP COEFFICIENT (Kc) OF COWPEA CROP IN SOIL WITH AND WITHOUT MULCH COVER IN THE RORAIMA SAVANNAH  2        ABSTRACT The determination of water parameters of a crop during its development is essential to maintain yield without wasting water. This study aimed to determine evapotranspiration (ETc) and crop coefficient (Kc) of cowpea crop (Vigna unguiculata L.) cv. Novaera during the various stages of development in soil conditions with and without mulch. The experiment was conducted in Cauamé, campus of the Federal University of Roraima, from April to July 2014, Boa Vista, Roraima state. Evapotranspiration cultivation (ETc) was obtained by drainage lysimeter, while the evapotranspiration reference (ETo) was estimated by Penman-Monteith and Jensen-Haise methods. The results determined that water consumption of cowpea in soil conditions with and without mulch were 311.0 and 260.4 mm, respectively. For Kc's developmental stages, initial (I), growth (II), reproductive (III), and final (IV), Penman-Monteith method showed values of 0.42, 0.82, 1.60, and 0.79 in soil without mulch, and 0.30, 0.73, 1.46, and 0.56 in soil with mulch, although the Jensen-Haise method showed values of 0.38, 0.76, 1.31 and 0.61 in soil with mulch and 0.29, 0.67, 1.19, and 0.42 in soil with mulch. Keywords: Vigna unguiculata. Optimization of water use. Water consumption 

Effects of No-tillage and Ploughing on Efficiency of Water Use in Maize and Cowpea

1978 ◽  
Vol 14 (2) ◽  
pp. 113-119 ◽  
Author(s):  
R. Lal ◽  
P. R. Maurya ◽  
S. Osei-Yeboah
Keyword(s):  
Zea Mays ◽  
Water Use Efficiency ◽  
Water Potential ◽  
Water Use ◽  
Leaf Water Potential ◽  
Vigna Unguiculata ◽  
Sprinkler System ◽  
Leaf Water ◽  
No Tillage ◽  
Use Efficiency

SUMMARYWater use efficiency of maize (Zea mays) and cowpea (Vigna unguiculata) was investigated, with and without tillage, under four irrigation frequencies in which 12 mm of water was applied at 2, 4, 8 and 12 day intervals, using a sprinkler system. Both maize and cowpea under no-tillage yielded more than with conventional ploughing. Water use efficiency of maize without tillage was 18·3, 17·5, 57·8 and 100% greater than with tillage at irrigation frequencies of 2, 4, 8 and 12 days respectively. Whereas the leaf water potential of cowpea was not affected by tillage, that of maize was generally higher for no-tillage compared with conventional ploughing.

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