Ecofisiologia e aspectos econômicos de genótipos de feijão caupi sob técnicas de captação de água no Semiárido Paraibano.

Abstract

Water isone of the morelimiting factors forecophysiological development of cultures compromising the growth and yieldof plants, notablyincowpea, fact compounded whengrown insemiarid region, characterized bywater limitation, so the oftechniqueswater catchmentand identificationof genotypestolerantarealternativeinproduction system. Withthisstudy focuses onthe ecophysiologyand economic aspectsofbean genotypesunderwater conservationtechniquesin situ, in order to relate therational use of waterto sustainable productionof the cropin the semiaridParaiba, identifying more resistant materials. The experiment was realized on fieldof the Federal Universityof CampinaGrande, UFCG, PombalCampus, PB, usinga randomizedblock design with factorialschem, 6x4, studyingfour techniquesofwater harvestingin situandsixcowpeagenotypes plantedat a spacing of0.5mx0.5m, with four replicationsand theexperimental parcelconsists of 24plants, being12 useful.It was studedthe growth, physilogical andproductionvariables on genotypesunder techniques and qualityandeconomic aspects from yield. The dataweresubmitted to analysisof variance, F test, testand(Tukey)mean comparisonfor factorgenotypes andwater conservation techniques.The semiarid region is passive to the cultivation of cowpea, with the use of techniques of water harvesting an alternative to the producer, among them is indicated in ridge cultivation, by providing better performance when compared to control, especially the cultivar Costela de Vaca and genotype BRS Guaribaby presenting the best value in relation to other.