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Karuppaiah, V.
- Integrated Management Strategies or Onion Thrips, Thrips tabaci Lindeman
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Authors
Affiliations
1 ICAR-Directorate of Onion and Garlic Research, Pune (M.S.), IN
1 ICAR-Directorate of Onion and Garlic Research, Pune (M.S.), IN
Source
Rashtriya Krishi (English), Vol 13, No 1 (2018), Pagination: 57-58Abstract
Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae) a key pest of onion and garlic in India. Under severe infestation it cause yield loss upto 50% through direct injury to foliage. As a vector in onion, thrips transmits Iris Yellow Spot Virus. IYSV is an emerging issue in onion particularly onion seed crop.- IPM in Onion:A Success Story
Abstract Views :222 |
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Authors
Affiliations
1 ICAR-Directorate of Onion and Garlic Research, Rajgurunagar, Pune (M.S.), IN
2 ICAR-National Centre for Integrated Pest Management, Pusa Campus, New Delhi, IN
1 ICAR-Directorate of Onion and Garlic Research, Rajgurunagar, Pune (M.S.), IN
2 ICAR-National Centre for Integrated Pest Management, Pusa Campus, New Delhi, IN
Source
Rashtriya Krishi (English), Vol 13, No 2 (2018), Pagination: 41-42Abstract
Growing bulb onion over the years have direct impact on socio-economic status of farmers of village Wadgaon Sahani of Pune district of Maharashtra. The round the year cultivation of onion in this village resulted into complex of insect pest problem. Pest like onion thrips and diseases such as stemphylium and purple blotch are the major issues of economic concern in onion productivity and causing significant yield losses. Under severe infestation and occurrence of pest and disease, the bulb yield can be reduced upto 50 per cent production. Over use and calendar based application of chemical insecticides were the key tactic adopted to manage various pest and diseases in this village. Round the year production, improved agronomic practices, imbalance fertilizer application and lack of crop rotation practices have aggravated pests and disease problem in onion. In such situation adoption of Integrated Pest Management (IPM) strategies become critical to sustain the productivity in an eco-friendly way. Available crop protection technologies for onion was integrated and a comprehensive IPM package was formulated. In the designed package much importance was given for pest monitoring integrated with cultural manipulation, use of bio-agents, natural enemies conservation and ETL based control action for sustainable production of onion was promoted and validated over 10 acres under farmers field condition at Wadgaon Sahani village, a main onion growing belt of Pune district of Maharashtra state.- Evaluation of Garlic Genotypes for Resistance to Thrips tabaci Lindeman
Abstract Views :78 |
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Authors
Affiliations
1 ICAR-Directorate of Onion and Garlic Research, Rajgurunagar, Pune 410505, Maharashtra, IN
1 ICAR-Directorate of Onion and Garlic Research, Rajgurunagar, Pune 410505, Maharashtra, IN
Source
Indian Journal of Entomology, Vol 84, No 2 (2022), Pagination: 459-462Abstract
Nine genotypes of garlic were evaluated for their reaction to Thrips tabaci Lindeman under natural infestation and for host plant traits. Amongst genotypes, UHF G12-2 exhibited resistant reaction; G-282 and PGS-204 were found to be moderately resistant and G- 384, G-189, Bhima purple, PGVK-07 and G-304 were susceptible. The relationship between infestation and among leaf angle (r = -0.897**) and total phenol content (r= -0.836**) showed a significant negative correlation. Leaf damage revealed a weak negative correlation with leaf angle (r= -0.483) and total phenol content (r= -0.303). The plant height and number of leaves revealed a significant negative correlation with thrips damage (r= -0.796*) and nonsignificant negative one with thrips density. Total chlorophyll content showed a non-significant negative correlation with thrips density (r= -0.278) and damage (r= -0.597). Thus, the garlic cultivar UHF G 12-2 could be a promising genotype with resistance/ tolerance, having higher phenol content, total chlorophyll and bulb yield.Keywords
Thrips tabaci, Allium sativum, Varietal Resistance, Biochemical Resistance, Biophysical Traits, Antixenosis, Antibiosis, Tolerance, Susceptible, Phenol, Chlorophyll, Bulb Yield.References
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- Effect of Interannual Rainfall Variability and Distribution on Growth and Yield of Kharif Onion Cultivars in India
Abstract Views :104 |
PDF Views:66
Authors
A. Thangasamy
1,
Pranjali A. Gedam
1,
P. S. Soumia
1,
Sourav Ghosh
1,
V. Karuppaiah
1,
Vijay Mahajan
1,
Major Singh
1
Affiliations
1 Soil Science Laboratory, ICAR-Directorate of Onion and Garlic Research, Pune 410 505, IN
1 Soil Science Laboratory, ICAR-Directorate of Onion and Garlic Research, Pune 410 505, IN
Source
Current Science, Vol 124, No 6 (2023), Pagination: 713-721Abstract
Four-year field experiments were conducted to assess the effect of interannual rainfall variability and distribution on the plant growth parameters and yield five kharif onion cultivars, viz. Bhima Super, Bhima Dark Red, Agrifound Dark Red, Arka Kalyan and Phule Samarth. Each cultivar was replicated six times. The plant growth parameters and yield were recorded during the plant growth period. The results showed that rainfall received 30–60 days after transplanting substantially and negatively affected the plant growth parameters and bulb yield of all the cultivars during the high-rainfall years while increasing onion bulb rotting losses. Bhima Super and Bhima Dark Red produced significantly higher marketable bulb yields throughout the experimental period. Hence these two cultivars can be successfully cultivated during the kharif season. However, they produced 44.5–63.6% lower yield during the high-rainfall than the low-rainfall years. This indicates that the yield of kharif onion cultivars could be further increased through improved management practices.Keywords
Bulb Yield, Kharif Onion Cultivars, Leaf Area Index, Plant Growth Period, Rainfall Intensity.References
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