Agronomic response in the cultivation of snap beans (Vigna unguiculata L. Walp.) to different conditions of water supply in the soil
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Abstract
The agronomic response of two snap bean varieties to different conditions of water supply in the soil was evaluated. The investigation was carried out during the period May-July 2017 in the national reference garden ¨Ñico López¨ located next to the 18-storey building in Bayamo, Granma, Cuba. A randomized block design with four treatments and tree replicas was used. The following indicators were evaluated: Days to germination, days flowering start, days start fructification, days start green maturity, number of pods per plants, weight of pods (g), diameter of pods (mm), length of pods, reproductive index as well as the yield (kg m²), in addition the humidity of the substrate (%) was determined by the gravimetric method. When the analysis of variance revealed significant differences, mean comparisons were made through the Duncan test, with a probability of error of 5 %. The statistical processing was carried out with Statistica statistical package version 8.0 on Windows. The results showed that soil moisture produced a significant effect on the performance factors, which decrease when soil humidity is lower and more pronounced in the variety Escambray. Important conclusions were reached that the cultivation of the snap bean is demanding to the quantity of water applied, for which reason the best productive response of this crop is obtained when irrigation is maintained throughout its vegetative cycle.
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