TITLE

Analysis of Cowpea Growth and Production in Maize Trellis with Nitrogen and Phosphorus

AUTHOR(S)
Barrios, P. Apáez; Estrada, J. A. S. Escalante; González, M. T. Rodríguez; Chávez, M. C. González; Barrios, M. Apáez
PUB. DATE
February 2014
SOURCE
International Journal of AgriScience;Feb2014, Vol. 4 Issue 2, p102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The cowpea (Vigna unguiculata (L.) Walp) is consumed in grain and pod and has a high content of protein, vitamins and minerals. Its cultivation in a living maize trellis increases profitability, but the nitrogen (N) and phosphorus (P) requirements may be higher. Their effect can be studied through growth analysis. The objectives were to determine the effect of N and P on: a) phenology, growth analysis rates, total biomass and intercepted radiation and b) yield components and green pod yield of cowpea in a living maize trellis. In warm weather, under conditions of seasonal rainfall, cowpea and maize were planted. The treatments consisted of applying 0,75 and 150 kg of N and P ha-1 (N0, N75, N150; P0, P75 and P150, respectively). The average maximum and minimum temperature during crop development was 34 and 20°C, respectively, with accumulated precipitation of 778 mm. Emergence occurred at five days after planting (dap), onset of flowering at 51 dap, first pod cut at 65 dap and last cut at 106 dap. Using N150 and P150 increased the number of leaves, leaf area index, leaf area duration, and radiation use efficiency, which led to higher crop growth rates and, therefore, increases in total biomass production and green pod yield (GPY). Combinations N150-P75 and N150-P150 generate the highest GPY.
ACCESSION #
94750530

 

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