Author:
PAUL R AROCKIA INFANT,ARTHANARI P MURALI,PAZHANIVELAN S,KAVITHA R,DJANAGUIRAMAN M
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.
Publisher
Indian Council of Agricultural Research, Directorate of Knowledge Management in Agriculture
Subject
Agronomy and Crop Science
Reference19 articles.
1. Ansari M, Yadav R, Siddiqui M, Ansari M, Khan N, Mishra D and Husain K. 2017. Efficacy of crop establishment techniques and weed control measures on weed dynamics, weed control efficiency and productivity in rice (Oryza sativa). Indian Journal of Agricultural Sciences 87(8): 1084–88.
2. Cao L, Cao C, Wang Y, Li X, Zhou Z, Li F, Yan X and Huang Q. 2017. Visual determination of potential dermal and inhalation exposure using allura red as an environmentally friendly pesticide surrogate. ACS Sustainable Chemistry and Engineering 5: 3882–89.
3. Chen Y, Qi H, Li G and Lan Y. 2019. Weed control effect of unmanned aerial vehicle (UAV) application in wheat field. International Journal of Precision Agricultural Aviation 2(2): 31.
4. Chinnamani I, Aasif M, Kumar N S, Velayutham A and Suresh S. 2018. Influence of weed management practices on weed dynamics and yield of drum seeded rice under puddled condition. International Journal of Advances in Agricultural Science and Technology 5(7): 17–23.
5. Dass A, Shekhawat K, Choudhary, Anil K, Sepat S, Rathore S S, Mahajan G and Chauhan B S. 2017. Weed management in rice using crop-competition. Crop Protection. 95: 45–52.