Growth, yield and fruit quality of tomato under different integrated management options against Tuta absoluta Meyrick
Copyright (c) 2020 Assinapol Ndereyimana, Samuel Nyalala, Patrick Murerwa, Svetlana Gaidashova
This work is licensed under a Creative Commons Attribution 4.0 International License.
United States Agency for International Development
Grant numbers BFS-G-11-00002;EEM-G-00-04-00013
This study evaluated the eﬀect of entomopathogens and plant extracts, used against Tuta absoluta, on growth, yield, and fruit quality of tomato. Two ﬁeld trials were carried out in a randomised compled block design, replicated thrice. The treatments were Steinernema sp. RW14MC2a3, Steinernema sp. RW14MC2a3, Metatech®WP (Metarhizium anisopliae, Strain FCM Ar 23B3), Beauvitech®WP (Beauveria bassiana, Strain J25) as entomopathogens, Tephrosia vogelii and Phytolacca dodecandra as plant extracts, and azadirachtin 0.03% EC. Imidacloprid and water also were included as positive and negative controls, respectively. The best growth and yield parameters were recorded with the entomopathogens and azadirachtin, which were insigniﬁcantly diﬀerent in most cases. The increase in yied of healthy fruit per plant (average of two trials) compared to the negative control (water spray) was 11.4, 10.8,10.1, 9.6, 3.96, 2.2, 11.7 and 2.4 folds for Steinernema sp. RW14MC2a3, Steinernema sp. RW14MC2a3, Metatech®WP, Beauvitech WP, T. vogelii, P. dodecandra, azadirachtin, and imidacloprid, respectively. There was no signiﬁcant diﬀerence in number of leaves per plant and fruit quality parameters. The entomopathogens and azadirachtin, which exhibited a capacity to enhance tomato growth and reduced yield losses due to T. absoluta, are recommended to be included in integrated pest management programme on tomato.