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Effect of Culture Density of Black Nightshade (Solanum nigrum) on the Insect Infestation
Plant
Volume 5, Issue 5-1, October 2017, Pages: 19-26
Received: Sep. 14, 2016; Accepted: Nov. 21, 2016; Published: Nov. 22, 2016
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Authors
Asseng Charles Carnot, Faculty of Science, Department of Plant Biology, Laboratory of Plant Biology and Physiology, University of Douala, Douala, Cameroon
Tiako Tchatag Emmanuel Alvarest, Faculty of Science, Department of Plant Biology, Laboratory of Plant Biology and Physiology, University of Douala, Douala, Cameroon
Okolle Justin, Institute of Agricultural Research for Development, Ekona, Cameroon
Ambang Zachée, Faculty of Science, Department of Plant Biology, Laboratory of Phytopathology and Microbiology, University of Yaounde, Yaounde, Cameroon
Monkam Tchamaha Fabrice, Faculty of Science, Department of Plant Biology, Laboratory of Plant Biology and Physiology, University of Douala, Douala, Cameroon
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Abstract
Leafy vegetables to which the black nightshade belongs occupy an important place in the world economy and contribute effectively to food security. But their culture is limited by the aggressiveness of pests and diseases. The study was based on a trial in the field in the experimental plots of IRAD-Ekona. Four density levels (T1, T2, T3 and T4) respectively corresponding to distances: random, 20cm x 20cm, 30cm x 30cm, 40cm x 25cm were tested. The results obtained and presented here show that in general, S. nigrum is strongly attacked by three types of insects: aphids, black ants and whiteflies. The citation order marks the order of importance of the attack. Indeed, when the culture densities are large (20cm x 20cm or random), S. nigrum is subject to many attacks. Culture density positively influences certain growth parameters (p ≤ 5%) and the yield of all varieties studied. The high densities (T1 and T2) are an ideal ecosystem for the attraction and development of insects; major disease vectors. The T3 treatment (30cm x 30cm) could be recommended to farmers to improve cultivation techniques and effectively increase their yield.
Keywords
Solanium nigrum, Densities, Insect, Infestation, Yield
To cite this article
Asseng Charles Carnot, Tiako Tchatag Emmanuel Alvarest, Okolle Justin, Ambang Zachée, Monkam Tchamaha Fabrice, Effect of Culture Density of Black Nightshade (Solanum nigrum) on the Insect Infestation, Plant. Special Issue: Phytotherapy. Vol. 5, No. 5-1, 2017, pp. 19-26. doi: 10.11648/j.plant.s.2017050501.13
Copyright
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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