Crop Loss Estimations due to Plant-Parasitic Nematodes in Major Crops in India
- PDF / 172,012 Bytes
- 4 Pages / 595.276 x 790.866 pts Page_size
- 37 Downloads / 311 Views
SHORT COMMUNICATION
Crop Loss Estimations due to Plant-Parasitic Nematodes in Major Crops in India Vinod Kumar1 • Matiyar Rahaman Khan2 • R. K. Walia1
Received: 18 August 2017 / Revised: 6 April 2018 / Accepted: 9 January 2020 Ó The National Academy of Sciences, India 2020
Abstract Plant-parasitic nematodes are a major biotic stress in successful crop cultivation. All India Coordinated Research Project (AICRP) on Nematodes in Cropping Systems is entrusted with developing nematode management technologies for varied agro-climatic zones. A precise assessment of crop losses caused by nematodes to crops and periodic update of the same are useful to fix research priorities, besides serving as a benchmark for policy planners/funding agencies for research support and public/ private sector to make appropriate investments for developing nematode management products. Based on data generated through AICRP on Nematodes over the years, a critical analysis has been made on losses in different crops. Overall, plant-parasitic nematodes cause 21.3% crop losses amounting to Rs. 102,039.79 million (1.58 billion USD) annually; the losses in 19 horticultural crops were assessed at Rs. 50,224.98 million, while for 11 field crops it was estimated at Rs. 51,814.81 million. Rice root-knot nematode, Meloidogyne graminicola, was economically most important causing yield loss of Rs. 23,272.32 million in rice. Citrus (Rs. 9828.22 million), banana (Rs. 9710.46 million) among fruit crops; and tomato (Rs. 6035.2 million), brinjal (Rs. 3499.12 million) and okra (2480.86 million) among the vegetable crops suffered comparatively more losses.
& R. K. Walia [email protected] 1
All India Coordinated Project on Nematodes in Cropping Systems, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
2
Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
Keywords Crop losses Plant-parasitic nematodes Horticultural crops Field crops Root-knot nematode Meloidogyne spp.
Plant-parasitic nematodes are a major biotic factor limiting crop productivity and ultimately crop production. Besides inflicting direct losses in crop yields, plant-parasitic nematodes also play an important role in disease complexes involving other pathogens. The expression of damage in crop plants due to nematodes often goes unnoticed for want of diagnostic symptoms. The estimation of crop losses due to nematodes is also cumbersome, and precise techniques for the same still remain elusive. Nevertheless, several reports are available on this aspect; the most widely quoted is the one by Sasser and Freckman [1]. According to them, plant-parasitic nematodes cause on an average 12.3% losses annually in 40 major crops at a global level; the losses are more in developing countries (14.6%) than in developed nations (8.8%). Based on this comprehensive survey on a global scale, the annual economic crop yield losses due to plant-parasitic nematodes in major crops have been estimated to be USD 173 billion [2]. All India Coordi
Data Loading...
