Abstract:
In Burkina Faso, vegetable production is a very important asset for its socioeconomic development. However, this production faces many constraints that
negatively affect its potential. The use of organic fertilization appears to be an
alternative to address these constraints and could also promote sustainable
agricultural production. In such a context, this study was conducted on tomato
using two bio-fertilizers based on local substrates (Bokashi compost and
compost enriched with Trichoderma harzianum). The objective was to assess
the efficiency of the two bio-fertilizers by determining their effects on tomato
yield and soil physico-chemical properties. It was conducted from 2018 to 2020
in Soala using a randomized Fischer block design with six treatments in three
replications. The treatments were T0 (control), T1 (NPK+urea), T2 (Bokashi
compost), T3 (compost enriched with Trichoderma harzianum), T4 (T1+T2)
and T5 (T1+T3). The results showed that the bio-fertilizers alone contributed to
maintain the neutrality of soil pH and very significantly improved its C, N, P and
K content. Moreover, in combination with or not with NPK+urea, they influenced
significantly plant growth, yield components and yield of tomato compared to
T0 plot. In these years of trials, compost enriched with Trichoderma harzianum
in combination with or not with NPK+urea, was found to be the most improving
tomato yield and the increase was more than 300%. This compost could be
therefore recommended to farmers in agriculture in general and particularly
for vegetable production.
