The guano of the islands and the production of green beans (Phaseolus vulgaris) in the Andean region of Ancash, Peru

Abstract

Objective: to evaluate the effect of the guano of the islands on green bean production in the Andean region of Ancash, Peru. Methodology: A randomized complete block design was implemented with six treatments arranged in four blocks. The island guano-based treatments were: T1: 0.0 t ha-1; T2: 1.0 t ha-1; T3: 2.0 t ha-1; T4: 3.0 t ha-1; T5: 4.0 t ha-1; and T6: 5.0 t ha-1. The variables evaluated were plant height (cm), number of pods per plant, pod length and width, pod weight per plant and yield (t ha-1). The data obtained were subjected to analysis of variance by the F test, after normality and homogeneity of variances. For the comparison of means, the Scott-Knott test was applied at 5%. The Sisvar statistical program was used. Results: significant differences were observed among the various treatments evaluated. The greatest plant height, number of pods per plant, pod length and pod width were obtained with applications of 4 and 5 t ha-1. In the case of yield, the highest value was obtained with the application of 5.0 t ha-1. Conclusion: The application of guano from the islands in green bean production yielded satisfactory results, especially in yield, which is the most important variable in the study. Key words: Phaseolus vulgaris, nitrogen, phosphorus, chlorophyll, yield.