Among all the cereals, productivity of maize is highest accounts 18 per cent acreage and 25 per cent production in the world. Maize occupies an area of 66 lakh hectares producing about 133 lakh tonnes annually with the productivity of 2015 kg ha-1 in India. In agriculture, weeds cause more damage (45%) as compared to insects, pests and diseases but due to hidden loss by weeds in crop production, it has not drawn much attention of agriculturists. Weed problem is one of the major barriers responsible for low productivity of maize because weeds compete with the crop for moisture, nutrients,...