Integrated weed management in irrigated pearl millet
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Date
2018
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CCSHAU
Abstract
A field experiment was conducted at Agronomy research farm of CCS Haryana Agricultural
University, Hisar, Haryana during Kharif 2016. Three pre emergence herbicides viz.,, atrazine at 500 g
ha-1, atrazine at 750 g ha-1 and pendimethalin at 1000 g ha-1, one pre-emergence herbicides mixture
viz., atrazine + pendimethalin at (0.4+0.75 kg/ha), four post-emergence herbicides viz.,, atrazine at 0.5
kg/ha application at 10-14 DAS, atrazine at 0.75 kg/ha at 10-14 DAS, tembotrione (Laudis) at 80g/ha at
2-4 leaf/10-15 DAS and tembotrione (Laudis) at 100g/ha (POST) at 2-4 leaf/10-15 DAS, two preemergence
herbicides with one hand weeding viz.,, atrazine at 0.4 kg/ha + one HW at 21 DAS and
pendimethalin at 0.75 kg/ha + one HW at 21 DAS, one pre-emergence herbicides mixture with one
hand weeding viz., atrazine + pendimethalin at (0.4+0.75 kg/ha) + one HW, three post-emergence
herbicides with one hand weeding viz. atrazine at 0.4 kg/ha (POST) at 10-14 DAS + one HW at 30
DAS, tembotrione (Laudis) at 80g/ha (POST) at 2-4 leaf/10-15 DAS +one HW at 30 DAS and
tembotrione (Laudis) at 100g/ha (POST) at 2-4 leaf/10-15 DAS +one HW at 30 DAS and two hand
weedings at 15 and 30 DAS were compared, with weed free and weedy check. Seventeen treatments
were tested using a randomised block design with three replications. Observations on growth studies,
yield attributes and yield, weed studies, seed parameters and economics of pearl millet were recorded.
The results obtained on climatic data revealed that rainfall received during the experimental period was
201.6 mm. It was well-distributed upto first week of September which resulted in good crop stand and
growth and two irrigations were also applied to the crop. Important weed species observed in the
experimental plots were Cyperus rotundus, Echinochloa colona, Trianthema portulacastrum and
Digera arvensis. Application of Tembotrione (Laudis) 80g/ha (PoE) at 2-4 leaf/10-15 DAS and one
HW at 30 DAS (T15) and Tembotrione (Laudis) 100g/ha (PoE) at 2-4 leaf/10-15 DAS and one HW at
30 DAS (T16) recorded significantly lower weed population, dry weight of weeds and higher weed
control efficiency at all growth stages with good crop growth. In weed control method, effective
control of weeds, higher grain and stover yield, net income and B: C were obtained with application of
Tembotrione (Laudis) 80g/ha (PoE) at 2-4 leaf/10-15 DAS and one HW at 30 DAS (T15).
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