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Abundance and Diversity of Hemipteran Predators in Different Organic Rice Regimes and Efficiency of Different Sampling Methods

Author: M. Chaitanya, G. Anitha and K.R. Mahendra

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Abstract

Rice (Oryza sativa L.) is a major food crop of the world. As it is affected by many insect pests, organic farming and natural control are the tactics for sustainable management of insect pests. An experiment was conducted during rabi 2020 at the research fields of the Indian Institute of Rice Research, Hyderabad to know the impact of organic treatments in rice crop viz., Trichoderma, Pseudomonas, and farmers’ practice on the abundance, diversity, and density of Hemipteran predators of rice pests. Various sampling methods such as visual counts, sweep net, yellow pan traps, yellow sticky traps and D-net collection were used. Results revealed that, among all these methods visual count and yellow sticky traps were found more effective for sampling of Hemipteran predators which together have collected 84 % of insects. Thirteen families of predators belong to Hemipteran order were recorded among which Miridae was the most abundant. There was no significant difference in abundance of predators among different treatments, however, the diversity indices showed considerable variations. The rice plots with seeds treated Pseudomonas and Trichoderma harboured relatively more predators than other treatments, however, it was on par with other treatments in most of the cases

Keywords

Organic rice, Predators abundance, Diversity indices, Sampling methods

Conclusion

The diversity of Hemipteran predators in organic rice crops is a fundamental component of natural pest control. The individual treatments with the above-mentioned treatments may be less effective. An effective combination of different treatments might provide outstanding results in terms of enhanced abundance and diversity compared to traditional rice cultivation

References

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How to cite this article

M. Chaitanya, G. Anitha and K.R. Mahendra (2024). Abundance and Diversity of Hemipteran Predators in Different Organic Rice Regimes and Efficiency of Different Sampling Methods. Biological Forum – An International Journal, 16(8): 178-183.