The proper timing for treatment varies with herbicides. These treatments are effective for control of many broadleaf weeds. For more detailed information about herbicide use and weed response, refer to The Georgia Post Control Handbook . In Georgia, irrigation is necessary to obtain high yields of good quality beans. Processors are reluctant to contract nonirrigated lima bean acreage because of inconsistent yields and quality.
Soil moisture is important at all stages of the growing season.
Adequate moisture provides uniform seedling emergence and ensures plants vigorous enough to support a good crop. Sufficient water is critical during blossoming and pod set. Dry soil conditions at this stage will result in severe shedding of blossoms, small pods or both. On heavier soils, lima beans should receive about to inch of rainfall or water from irrigation per week before blossoming and about 1 inch per week during blossom and pod development. On light soils with a low water-holding capacity, plants require inch twice a week or inch every five days during blossom and pod development.