January 2015 Vol. 3 No.1

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Habimana S
Nsanzumuhire A

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Original Research Article

The influence of time and methods of application of D.I grow on growth and yield on irish potato under Busogo conditions in Rwanda

Habimana Sylvestre, Karanyoye M. Francoise, Munyensanga Fidele and Nsanzumuhire Amos

Department of Crop Science, College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda.

*Corresponding Author's Email: shabimana@gmail.com

Accepted January 05, 2015

Abstract

Irish potato is one of the most important and fast growing food crop, especially in highlands of Rwanda. This research was carried out in order to assess the effect of time and methods of application of D.I grow on growth and yield of Irish potato production under Busogo conditions in Rwanda. To achieve this objective the soil sample collected from experiment field were tested in the CAVM laboratory for determination of the soil nutrient content and the factorial experimental was laid out in randomized complete block design (RCBD) with three replications and comprising four treatments such as F1T1: Inoculation with spraying at foliage stage, F1T2: Inoculation with spraying at tuber growth stages; F2T1: Spraying at foliage stage and F2T2: Spraying at tuber growth stages. The result of this research shown that the highest yield was obtained in F2T1 (spraying at foliage stage) with 41.1 tons ha-1 and the lowest was observed in F1T1 (inoculation with spraying at foliage stage) with 37.4 tons ha-1. From these results, the spraying of D.I Grow plus fertilizers during vegetative and tuber growth stages should be advisable to the farmers in order to maximize their profits and Irish potato productivity.

Keywords: D.I Grow, inoculation, potato, spraying, tuber