Corn and soybean planting is complete around the state, but early crop development is in trouble. Cold temperatures and heavy rains have slowed crop development and have made replanting difficult. According to Denny Cobb, agronomist with Becks Hybrids, “While it has been a challenge getting the crops planted, most guys were able to do that. Getting the corn to the V4 or V5 stage has been very difficult.” He added early crop development in soybeans has also not been good.
Cobb says for those who have delayed replanting, it is now too late to fix any problems you might have, “Mother Nature has turned down the temperature and, with the heavy late spring rains, has shut the door on planting and replanting from now on.” Cobb services most of the Northern part of the state, but there still may be some replant options in Southern counties.
Cobb says the late planting and poor early crop development will take its toll on soybean yields, “I think on at least 25% of the soybean crop we have seen about a 10% yield loss.” He said later planted soybeans require higher planting populations and the conditions were not conducive for that this year.
As for corn, Cobb sees the biggest issue being a lack of nitrogen because of the heavy rain. He suggested farmers do some testing to try and determine how much nitrogen loss has occurred because of the rain, “That is the big question mark in corn: how much nitrogen is left and will be available o the plant as it move toward pollination.” He said corn plants still need another 20% of their nitrogen after pollination. He suggests that producers use data analysis from services like FarmServer to help in making their decision about nitrogen loss in their fields.