Green gram is sown in spring (March) as well as rainy season (August). Cyperus species is serious problem in both the seasons. During spring season green gram fits into Rice- Potato- Green gram or Sugarcane ratoon-green gram- paddy or Rice-wheat-green gram rotations. Kindly suggest the herbicide being safe to the succeeding crop also.
Dear Mehar Chand , you can use lactofen or conquest @ 750ml per ha between the rows of green gram and make sure spray not fall on the main crop. S-metachlor can also be used as pre-emergence @ 2000 ml per ha. Or after harvesting the previous crop you can irrigate the field and plough and plank it once and left it fallow and allow cyperus to grow and then after 25-30 days kill it by using Glyphosate @ 4-5 liter per ha and maintain good moisture level for 2 weeks it will kill the cyperus with its from your field and is considered the best method before sowing the green gram.
Haloxyfop-p- methyl at 135 g/ha + Imazethapyr at g/ha, and Quizalofop
ethyl at 50 g/ha + Imazethapyr at 75 g/ha applied at 12-15 days after sowing of green gram as an early post- emergence can be used
Vellore 32@ 1kg ai per hectare
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