Abstract

ADAME-GARCIA, Jacel et al. Effect of microbial biostimulants on bell pepper and tomato fruits produced in macrotunnels. Biotecnia [online]. 2023, vol.25, n.1, pp.81-87.  Epub Aug 07, 2023. ISSN 1665-1456.  https://doi.org/10.18633/biotecnia.v25i1.1772.

The intensive production of vegetables has caused excessive dependence on chemical fertilization, which has generated environmental and food safety problems. An option to reduce the amount of synthetic fertilizers is the management of nutrients through microbial inoculations. The objective of this study was to evaluate the effect of two biostimulants based on Trichoderma spp. and one from Bacillus spp., on the diameter, length and weight of bell pepper and tomato fruits under macrotunnel conditions. The treatments were: Genifix®, T22®, Mix® and control (blank). A completely randomized block design with four repetitions was used. Three harvests were made per crop. The response variables were: weight, diameter and fruit length, in addition to the weight of 20 fruits chosen at random. The fruits obtained with the Genifix treatment were larger and heavier, with significant differences from the rest of the treatments. The T22 and Mix also showed a significant effect on the development of larger and heavier fruits in relation to the control in most harvests. The evaluated biostimulants improved the size and weight of bell pepper and tomato fruits in plants with minimal traditional fertilization management under macrotunnel conditions.

Keywords : Genifix; Bacillus; Trichoderma; vegetables; protected agriculture.