No-till twin row soybeans planted in June after rye harvest
Full season soybean planting is wrapping up in this area. All that I am aware of left to be planted is those which some call “ultra-late” which will be planted behind corn for grain or silage. Although it is not too late to plant soybeans, research has shown yields decline with later than optimum plantings. University of Georgia makes the following recommendations for planting dates:
The optimum period for planting soybeans in Georgia is from May 10 to June 10. Planting can begin as early as May 1 if soils are warm (>70°F) and tall-growing MG V or VI varieties are used. Planting before May 1 usually causes premature flowering, plant stunting and reduced seed quality, especially in MG VII or later varieties. Very early-maturing soybean varieties tend to have a more narrow range of favorable planting dates than do late-maturing varieties. This occurs because at southern latitudes the photoperiod response induces early varieties to flower before obtaining adequate growth necessary for optimum yields. Planting after June 10 reduces plant growth, auxiliary limb branching, root nodulation and nitrogen fixation, and yield. However, the planting period can be extended as if adapted tall growing late maturing varieties are used. These varieties should be used in conjunction with approved late-planting practices of higher plant populations and close rows when planting cannot be made during the optimum period. Typically, all planting should be completed before July 1. Growth and yield, even with the best of efforts, may not be economical after this time. Expect soybean yield with good varieties and management to decline about ½ to ¾ bushel/A for every day planting is delayed after June 10.For a complete copy of the University of Georgia Soybean Production Guide, click here: Georgia Soybean Production Guide
One of our area farmers shared some pictures and video with me showing some of the equipment he uses to form beds and plant soybeans. He is spraying pre-emerge herbicides right behind the planter to hold back the grass and weeds. The season has gone well so far for him and he reported 12″ of rain in June at his farm.