How to control weeds in lemon grass crop?

The main field is kept weed free for the first 3 to 4 months after planting the Lemon grass. Similarly, weeding cum hoeing is done up to 4 weeks, after every harvest. Generally, 2 to 3 weeding’s are required during a year. In row planted crops, intercultural operations should be done by hand hoe or a tractor drawn cultivator.