Abstract

ENCISO GARAY¹, Cipriano Ramón  and  CABALLERO MENDOZA¹, Cesar. Cowpea varieties production in two Central Chaco locations. Investig. Agrar. [online]. 2015, vol.17, n.1, pp.18-26. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2015.junio.18-26.

Cowpea are one of the most consumed legumes in Paraguay, produced for both on-farm consumption as well as an important cash-crop for family farming. The aim of this work was to evaluate agronomical characteristics and yield of five varieties of cowpea in 2 locations of the Paraguayan Central Chaco, in order to identify those with the highest yields. The evaluation was carried out between January and April, 2013. The trials were conducted by combining two locations (Isla Po´i and Betania) and five varieties of cowpea (San Francisco’i, Pyta’i, San Francisco Guazú, Blanco Ojo Negro y Moteado) totaling 10 trials. The experimental design was randomized complete blocks, 2 x 5 factorial arrangements with four repetitions. Each experimental unit was made up of four 4 meters long rows, separated by 0,7 meters. After thinning, two plants per planting hole were left standing every 0, 25 m. The variables evaluated were grain yield per bean pod, yield of dry grain, percentage of dry grain, number of grain per pod, and the weight of 100 seeds. The statistical analysis shows that in Isla Po´i the more productive varieties were Pyta’i (4,40 t ha^-1), San Francisco Guazú (4,27 t ha^-1) and San Francisco’i (3,81 t ha^-1), while in Betania all varieties showed statistically similar results that varied between 1,19 t ha^-1 (San Francisco’i) and 1,53 t ha^-1 (Pyta’i). In Isla Po´i yields were higher. The Moteado and Blanco Ojo Negro varieties are more stable in their yields in the two locations evaluated, with no effect on their production.

Keywords : Vigna unguiculata (L.) Walp,; variety,; yield.

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