Weed Management

1. Manual Weeding:
If sufficient labour is available, manual weeding after one month from crop emergence helps in controlling weeds as well as to conserve the moisture in rain-fed agriculture.

 2.  Chemical Weeding:
i. Use Isoproturan (1250 g/ha) to control narrow leave grass weeds in wheat.
Isoproturan is available under various trade names. It should be used according to the chemicals and given quantity like Arilon/ Maslen/ Him Agrilan (75%) – 1700 gm/ha. Apart from this, Clodinafop-Propargyl 15 W.P. 60 gm/ha. can be used for weed control in wheat.
ii. After the growth of weeds, use chemicals when there are 2-3 leaves on them, this provides good control of weeds. This stage occurs after 30-35 days in lower hilly areas and after 40-45 days in intermediate areas in timely sown crops. In light soils, reduce the quantity of the above herbicides by 20%. Where there is a problem of wild oats, spray this chemical 20 days after sowing. To control ryegrass, reduce the quantity of Isoproturon chemical by 20% and spray by adding 0.5% Selbut/ Teepol/ Sandovit sticker. If farmers are not using stickers with herbicide, then the full dose of chemical will have to be added.
iii. If there is a problem of both grass and broad-leaved weeds, then Apply Clodinafop 60 grams/ Metsulfuron Methyl 4 grams to the crop in 30-35 days. If wheat is grown at spacing of 15 cm row to row or 22 cm in opposite direction and fertilizers are applied in both the directions, then the number of Gulli Danda and Wild Oat weeds
is reduced. In such a situation, the above mentioned weeds can be controlled by
using half the quantity of Isoproturan but they should use after 15 days of sowing. In fields where there is a problem of ryegrass weeds, use only the full dose of herbicide.

 3. Precautions:
i. Do not use herbicides in wheat when any broad leaf crop is sown simultaneously.
ii. Use a flat fan nozzle while spraying.