Field experiment examines weed management's effect on grain amaranth yield and nutrient uptake, indicating effective herbicide use is crucial.
Key Points
This study aims to evaluate the impact of various post-emergent herbicides on the growth and yield of grain amaranth while considering competing weeds.
Field experiment conducted with eight treatments of herbicides and weeding practices
Treatments included five herbicides, one manual weeding, weed-free check, and weedy check
Replicated thrice in Randomized Complete Block design
Quizalofop ethyl at 50 g a.i. ha⁻¹ produced the highest yield of 1896 kg ha⁻¹
Weedy check yielded only 1005 kg ha⁻¹, highlighting the negative impact of weeds
Higher nutrient uptake (N, P, K) observed with Quizalofop treatment compared to weedy check