Effect of Post- Emergence Herbicides Spraying by Drone on Weed Indices, Growth and Yield of Maize (zea Mays L.)
Year: 2024
Type: article
Abstract: This study explored a perspective of effect of post-emergence herbicides spraying by drone on weed indices, growth and yield of maize (Zea mays L.) undertaken during kharif 2023 at Maize Research Centre, Agricultural Research Institute (ARI), Professor Jayashankar Telangana State Agriculture University (PJTSAU), Rajendranagar, Hyderabad.The experiment comprised of eight treatments i.e., T 1 -Spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) with adjuvant by using drone, T 2 -Spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) without adjuvant by using drone, T 3 -Spraying of topramezone 33.6% SC 25.2 g ha -1 + atrazine 50% WP 500 g ha -1 (TM) with adjuvant by using drone, T 4 -Spraying of topramezone 33.6% SC 25.2 g ha -1 + atrazine 50% WP 500 g ha -1 (TM) without adjuvant by using drone, T 5 -Spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) by using knapsack sprayer, T 6 -Spraying of topramezone 33.6% SC 25.2 g ha -1 + atrazine 50% WP 500 g ha -1 (TM) by using knapsack sprayer, T 7 -Weedy check and T 8 -Weed free (HW at 20 and 40 DAS) laid out in a randomized block design with three replications.The results revealed that the weed free treatment (HW at 20 and 40 DAS) recorded significantly higher plant height at 90 DAS and it was on par with spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) by using knapsack sprayer, mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) with adjuvant by using drone and mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 without adjuvant by using drone and they were superior over rest of the treatments.Significantly highest leaf area, dry matter production at 90 DAS was recorded in weed free treatment (HW at 20 and 40 DAS) fb spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) by using knapsack sprayer but it was on par with mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) with adjuvant by using drone and mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 without adjuvant by using drone.Significantly lowest weed dry matter was recorded in weed free treatment (HW at 20 and 40 DAS) fb spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) by using knapsack sprayer but it was on par with mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) with adjuvant by using drone and mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 without adjuvant by using drone.Highest weed control efficiency and lowest weed index was recorded in weed free treatment (HW at 20 and 40 DAS) followed by spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) by using knapsack sprayer, mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) with adjuvant by using drone and mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 without adjuvant by using drone.Significantly highest cob length, cob and kernel and stover yield was recorded in weed free treatment (HW at 20 and 40 DAS) followed by spraying of mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) by using knapsack sprayer, mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 (RM) with adjuvant by using drone and mesotrione 2.27% + atrazine 22.7% SC 875 g ha -1 without adjuvant by using drone.Hence, it can be concluded that among the herbicide treatments, mesotrione 2.27% + atrazine 22.7% SC Effect of post-emergence herbicides spraying by drone on weed indices, growth and yield of maize (Zea mays L.) 875 g ha -1 (RM) with and without adjuvant by using drone and knapsack sprayer were equally superior in terms of improved growth and yield of maize apart from higher weed control efficiency and lower weed index.
Source: PLANT ARCHIVES
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W4409305796