Author
Listed:
- Sandip Patra
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Sabina Rai
(College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University, Umiam 793103, Meghalaya, India)
- Debasish Chakraborty
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Rumki H. C. Sangma
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Sutanu Majumder
(College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University, Umiam 793103, Meghalaya, India)
- Khrieketou Kuotsu
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Mahasweta Chakraborty
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Pankaj Baiswar
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Binay K. Singh
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Aniruddha Roy
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Nongmaithem Uttam Singh
(ICAR Research Complex for NEH Region, Umiam 793103, Meghalay, India)
- Veronica Kadam
(College of Horticulture, Central Agricultural University, Thenzawl, Aizawl 796186, Mizoram, India)
- Mahesh Pathak
(College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University, Umiam 793103, Meghalaya, India)
- R. K. Tombisana Devi
(College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University, Umiam 793103, Meghalaya, India)
Abstract
This study analyzed the impact of weather variables on insect pest dynamics and their diversity in the radish ecosystem through field experiments conducted for two years at a locality in the eastern Himalayas. The relationship with weather variables was studied with six different dates of sowing, and diversity was assessed using standard indices. Various organic management options were also evaluated. Results revealed that temperature had a positive impact, whereas relative humidity and rainfall negatively affected the population of insect pests. The radish ecosystem harbors diverse insect species, including natural enemies, with higher species richness (4.8–5.2) and lower year-to-year variability. Organic management strategies such as neem oil, Beauveria bassiana , and Metarhizium robertsii demonstrated good efficacy against flea beetles without compromising yield, resulting in 39.76%, 39.39%, and 38.71% pest reduction over control, respectively. These biopesticides also recorded less than half to one-fourth reduction in natural predators like coccinellids compared to cypermethrin, a chemical pesticide (74%). The study suggests that, under projected climate change with higher temperatures, pest populations are assumed to increase. Considering the insect diversity of the eastern Himalayas, organic management strategies will be an adaptation strategy to conserve biodiversity while ensuring environment-friendly pest management.
Suggested Citation
Sandip Patra & Sabina Rai & Debasish Chakraborty & Rumki H. C. Sangma & Sutanu Majumder & Khrieketou Kuotsu & Mahasweta Chakraborty & Pankaj Baiswar & Binay K. Singh & Aniruddha Roy & Nongmaithem Utta, 2024.
"Impact of Weather Variables on Radish Insect Pests in the Eastern Himalayas and Organic Management Strategies,"
Sustainability, MDPI, vol. 16(7), pages 1-21, April.
Handle:
RePEc:gam:jsusta:v:16:y:2024:i:7:p:2946-:d:1368792
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