Effect of fertility levels and herbicide mixtures on yield and yield attributes of rainfed maize under temperate conditions of Kashmir
Year: 2016
Type: article
Abstract: The present study was aimed to assess the response of rainfed maize to various fertility levels and weed management practices under temperate Kashmir conditions. The field experiment consisted of 3 fertility levels of NPK viz., 60:40:20, 75:50:30 and 90:60:40, N:P2O5:K2O kg ha−1) and 4 weed management practices viz., no weeding, two hand weeding 20 and 50 days after sowing (DAS), atrazine @ 1.0 kg a.i. ha−1 (as preemergence) + one hand weeding 20 DAS, and atrazine @ 1.0 kg a.i. ha−1 (pre-emergence) + isoprotron @ 1.0 kg a.i. ha−1 (post-emergence). The results revealed that fertility levels of 90:60:40 and 75:50:30 (NPK) were at par and showed significant increase in cob length, cobs plant−1, grains cob−1, 100-seed weight, grain yield, biological yield and stover yield as against fertility level of 60:40:20 NPK. However, the number of rows cob−1 and cob diameter showed significant improvement with increase in fertility level. Increase in fertility level from 60:40:20 to 75:50:30 NPK significantly enhanced harvest index but further addition caused significant decrease. Weed management practices of atrazine as preemergence application + one hand weeding at 20 DAS was at par with atrazine as pre-emergence + isoprotron as post-emergence application treatment and both showed significant improvement in all yield contributing characters over no weeding and 2 hand-weedings at 20 and 50 days DAS. Both grain and stover yields were significantly higher with atrazine as pre-emergence application + 1 hand weeding at 20 DAS over hand weeding on 20 and 50 DAS and no weeding.
Source: Applied Biological Research
Authors: Shamim Gul, B.A. Khanday, M.H. Khan
Language: English
Subfield: Agronomy and Crop Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W2502339002