Vol. 12, Issue 8 (2023)

Author(s):
Neelam Gupta and Shrikant Chitale

Abstract:
Experiment was conducted at Indira Gandhi Krishi Vishwavidyalaya, Raipur to quantify the effect of different weed control techniques and row spacing on weed dynamics and productivity of rabi maize. The outcome of different combination with the spacing and weed control techniques' influence on plant populations recorded to be significantly higher with the treatment 45cm + atrazine 1.0 kg/ha PE proceeded by power weeder (25-30 DAS) and the treatment proceeded by 45cm + atrazine 1.0 kg/ha PE followed by topramezone 25.2 g/ha, POST. The taller plants were recorded with the treatment 60cm + directed spray of paraquat 500 g/ha at 25 DAS. The treatment 45cm + atrazine 1.0 kg/ha PE proceeded by topramezone 25.2 g/ha, POST also produced considerably higher number of seeds per cob, weight of the cob, no. of rows cob^-1 and girth of the cob. Overall, the treatment with 45 cm spacing and with the pre-emergent application of atrazine 1.0 kg/ha PE followed by post-emergence application of topramezone 25.2 g/ha produced considerably higher yield. Significantly higher stover yield (7.18 t/ha) was recorded with the treatment 45cm + atrazine 1.0 kg/ha PE proceeded by power weeder (25-30 DAS) and 45cm + atrazine 1.0 kg/ha PE proceeded by topramezone 25.2 g/ha, POST. Lower grain yield and stower yield is observed under weedy check.