Widespread distribution and infestation of pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae), in Bt cotton growing regions of India

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-04-25 DOI:10.1016/j.cropro.2025.107257

Tadagavadi Nagaraju Madhu , Kamanur Muralimohan , Vakudavath Chinna Babu Naik , Dinesh Kumar Yadav

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引用次数: 0

Abstract

The pink bollworm (PBW), Pectinophora gossypiella (Lepidoptera: Gelechiidae), is a major pest of cotton, causing significant economic damage. However, comprehensive data on its prevalence and impact across India's cotton-growing regions (North, Central, and South) is limited. To fill this knowledge gap, extensive surveys were conducted from 2019 to 2021 in 164 locations across 41 cotton-growing districts in 10 states, assessing PBW distribution and its potential damage to Bt cotton. We evaluated PBW incidence and severity at various crop stages, including flowering, boll formation, and maturation stages. The findings indicated that PBW was widely distributed across India's cotton-growing regions, with field infestations ranging from 8 to 29 % during flowering and 40–92.5 % at boll maturation. As the season progressed, locule damage ranged from 36 to 86 %, and boll occupancy was in the range of 0.65–1.83. Central India (Maharashtra and Gujarat) exhibited the highest PBW infestation, followed by North India, while South India generally experienced lower damage severity, except for a few regions in Karnataka and Telangana. The widespread presence of PBW across diverse agro-climatic zones poses a significant threat to cotton production. To effectively manage PBW infestations in Bt cotton, it is essential to implement targeted control strategies at regular intervals throughout the reproductive phases of the crop.

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印度Bt棉种植区粉红棉铃虫Pectinophora gossypiella (Saunders)（鳞翅目：姬蝇科）的广泛分布和侵染

棉铃虫（Pectinophora gossypiella，鳞翅目：棉铃虫科）是危害棉花经济的主要害虫。然而，关于其在印度棉花种植区（北部、中部和南部）的流行程度和影响的综合数据有限。为了填补这一知识空白，2019年至2021年在10个州41个棉花种植区的164个地点进行了广泛调查，评估了PBW的分布及其对Bt棉花的潜在损害。我们评估了不同作物阶段（包括开花、成铃和成熟期）PBW的发病率和严重程度。结果表明，PBW在印度棉花产区分布广泛，花期侵染率为8% ~ 29%，棉铃成熟期侵染率为40 ~ 92.5%。随着季节的推移，室害在36% ~ 86%之间，铃占用率在0.65 ~ 1.83之间。印度中部（马哈拉施特拉邦和古吉拉特邦）表现出最高的PBW侵扰，其次是印度北部，而印度南部除了卡纳塔克邦和特伦加纳邦的少数地区外，总体上遭受的损害程度较低。PBW在不同农业气候带的广泛存在对棉花生产构成了重大威胁。为了有效地控制Bt棉花的PBW侵染，必须在作物的整个繁殖阶段定期实施有针对性的控制策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.