Drone-based herbicide application for energy saving, higher weed control and economics in direct-seeded rice (Oryza sativa)


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Authors

  • R AROCKIA INFANT PAUL Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
  • P MURALI ARTHANARI ICAR-Krishi Vigyan Kendra, Tamil Nadu Agricultural University, Sirugamani, Tamil Nadu
  • S PAZHANIVELAN Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
  • R KAVITHA Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
  • M DJANAGUIRAMAN Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India

https://doi.org/10.56093/ijas.v93i7.137859

Keywords:

Direct-seeded rice, Drone, Energy, Herbicide, UAV, Weed control efficiency

Abstract

A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif (rainy) and rabi (winter) seasons of 2022 and 2023 to evaluate the efficiency, energy and economics of drone-based herbicide application in direct-seeded rice (Oryza sativa L.). The study was carried out with application of pre-emergence, early post-emergence and post-emergence herbicides using drone and knapsack sprayer to assess the weed control efficiency. Treatments included pretilachlor followed by (fb) application of post-emergence herbicides, such as bispyribacsodium (Na), fenoxyprop ethyl + carfentrazone ethyl and early post-emergence herbicides, such as bispyribac-Na, fenoxyprop ethyl + carfentrazone ethyl, bispyribac-Na fb post-emergence of fenoxyprop ethyl + carfentrazone ethyl, weed-free check and unweeded check. Application of pretilachlor fb bispyribac-Na using knapsack sprayer reduced weed density from 83 to 87% and weed dry weight from 81 to 83% over unweeded plot. Moreover, it was found on par with drone application of same herbicides in both seasons. Pretilachlor fb bispyribac-Na application through knapsack sprayer and drone produced higher grain yield and it was comparable with weed-free plot. Higher net return, benefit: cost ratio (2.27 and 2.09), energy-use efficiency (10.86 and 9.55 MJ) and energy productivity (0.81 and 0.71 kg/MJ) were noticed with drone application of pretilachlor fb bispyribac-Na in both the seasons. From the experiment, drone application of pretilachlor fb bispyribac-Na is found as an effective strategy to manage weeds in direct-seeded rice and more advantageous in terms of energy-use and profitability.

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Submitted

2023-06-16

Published

2023-08-08

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Articles

How to Cite

PAUL, R. A. I., ARTHANARI, P. M., PAZHANIVELAN, S., KAVITHA, R., & DJANAGUIRAMAN, M. (2023). Drone-based herbicide application for energy saving, higher weed control and economics in direct-seeded rice (Oryza sativa). The Indian Journal of Agricultural Sciences, 93(7), 704–709. https://doi.org/10.56093/ijas.v93i7.137859
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