Integrated management of late blight of potato
Journal Title: Journal of Applied and Natural Science - Year 2017, Vol 9, Issue 3
Abstract
Late blight of potato is the major biotic constraint responsible for reduction in yield and quality of the pota-to crop. Globally, late blight is managed through application of multiple fungicidal chemical sprays affecting both human health and environment. Now a days, methods of biological control are gaining importance as these are non-toxic and also environment friendly. However, Phytophthora infestans multiplies very fast; therefore, biological con-trol method alone is not a viable option to manage late blight. Hence, integration of both methods is essential. Eleven treatments consisting of biocontrol agents and fungicides were evaluated against the late bight in three consecu-tive seasons (2011-12, 2012-13, 2013-14) at ICAR-CPRIC, Modipuram. Meerut. The results revealed that the treat-ments ( T1 to T10) are effective for managing the disease up to certain level; however, lowest average disease se-verity (27.89%) was recorded in treatment when Bacillus subtilis (B5-0.25%) + Trichoderma viride (TV-0.7%) was applied before disease appearance followed by cymoxanil8+mancozeb 64%WP (0.3%) at onset of late blight and one more spray of B5+ TV after seven days. The next best treatment was application of B5+ TV before appearance of disease followed by metalaxyl 8+mancozeb 64%WP (0.25%) at onset of late blight and one more spray of B5+ TV against control (average disease severity 91.94%) with higher yield also except the treatment of three spray of mancozeb 75% WP (0.2%). These treatments could be integrated in farmer practices.
Authors and Affiliations
Mehi Lal, Saurabh Yadav, Sanjeev Sharma, B. P. Yadav, S. K. Kaushik
Keywords
Related Articles
- EP ID EP286894
- DOI 10.31018/jans.v9i3.1445
- Views 108
- Downloads 0
Quantitative analysis, distributional pattern and species diversity of woody plant species of Lamberi Forest Range, Rajouri, J&K, India
Quantitative analysis, distributional pattern and species diversity of woody plant species of Lamberi Range of Rajouri Forest division, J&K, has been carried out by laying 50 quadrats (10m X 10m size) for trees and 100 q...
Influence of silica intoxication on female reproductive organs with therapeutic agents Vitamin E and Vitamin C
The aim of the present study was to observe the alteration of blood biochemical and histopathological variables after silica exposure, and also to show whether therapeutic agents (Vitamin E + Vitamin C) used in study may...
Effect of predrying treatments on the retention of quality characteristics of green peas (Pisum sativum L.) cv. Lincoln during mechanical drying
An experiment was conducted to standardize the predrying treatments with minimum loss to physicochemical characteristics of green peas (Pisum sativum L.) cv. Lincoln during drying process. In this study, moisture content...
Allelopathic effect of Celtis australis on germination and growth parameters of some important food crops of the Garhwal Himalayas
Present study was conducted to assess the allelopathic effect of leaf and bark aqueous extracts of Celtis australis on Triticum aestivum, Hordeum vulgare, Brassica rapa, Lens culinaris and Vigna umbellate under In-vitro...
Allelopathic effect of Dendrocalamus stocksii (Munro.) on growth and yield of ground nut (Arachis hypogaea)
The present study was conducted to assess allelopathic effect of Dendrocalamus stocksii (Munro.) on the growth and yield of ground nut (Arachis hypogaea). Bamboo leaf leachate was prepared by soaking the dry leaves in ta...