questions: asking about the weed control of sugarcane in 30-35 days of planting. 
 answers: suggested mr sahani to do pre-emergence application of 2,4-d(na-salt)800gm-1000gm/hactare followed by one weeding is economical as well as satisfactory,alternatively to spray diuron@800gm-1000gm/hactare and also adviced to use 500-700 litres of water to prepare the spray.