Abstract
Using goat manure may substantially increase cowpea bean productivity. This study evaluated the yield of ‘pingo de ouro’ cowpea bean under different sowing densities and goat doses in the region of Mossoró, Brazil. The experiment was conducted from October to December 2016 at the Experimental Farm Rafael Fernandes, Mossoró-RN, Brazil. Treatments arranged in two-way factorial with four goat manure doses (0.0, 0.5, 1 and 2 kg m-1), and two sowing densities of bean (75,000 and 37,500 plants ha-1), with three replicates. The experiment was performed in complete randomized blocks design. We evaluated the number and length of pods per plant, number of seed per pod, weight of 100 dry grains and dry grain yield. Higher grain yield occurred using 2.0 kg m-1 of goat manure (1,162.4 kg ha-1 or 234 kg 2,000 m-2) and 75,000 plants ha-1 (693.4 kg ha-1 or 138.6 kg 2,000 m-2). High sowing density in combination with goat manure is an affective.
Highlights
IntroductionIn the state of Rio Grande do Norte, Brazil, the cultivation of cowpea generates employment and income
The cowpea (Vigna unguiculata (L.) Walp) is one of the main food sources of tropical regions because it contains substantial lipids, sugars, calcium, iron, potassium, phosphorus and several essential amino acids (Cardoso & Ribeiro, 2006).In the state of Rio Grande do Norte, Brazil, the cultivation of cowpea generates employment and income
The fertilization with 2.0 kg m-1 of goat manure leads to the largest dry grain yield, 1,162.4 kg ha-1 (234 kg 2,000 m-2)
Summary
In the state of Rio Grande do Norte, Brazil, the cultivation of cowpea generates employment and income. The rusticity, precocity and the wide adaptability allow the cultivation of cowpea in aggressive environments, an essential characteristic for the northeastern region of Brazil (Souza et al, 2013). In this region, climate is semi-arid, and string beans stand out as a significant crop that used as major source of proteins and carbohydrates, in the form of dry and green grains (Lima, 2014). The Brazilian states with the highest per capita consumption of beans are Ceará and Piauí, predominantly using cowpea (Wander, 2007)
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