-Understanding the cause of an inadequate soybean stand is important to help prevent a reoccurrence of a poor stand if the decision is made to replant. -Final soybean plant stands of 73,000 plants per acre or more consistently provide 90 percent or more of maximum yield potential. -Make weed control a high priority in fields…Details
– Soybean productivity can be significantly hampered by toxic elements. – Plant toxicity normally occurs when certain ions in irrigation water are absorbed and accumulated at high concentrations in the leaves. -Excessive levels of chloride (Cl) and sodium (Na), which can be found in the irrigation water, are considered toxic ions and can damage the…Details
Corn seedlings can have a yellow appearance, especially with cool conditions. Understanding how the corn plant develops can help identify what is likely occurring, what conditions or symptoms for which to scout, and potential management options.
Spotlight: Yellow Corn Seedlings
Several factors can contribute to uneven corn emergence and growth early in the season. Replanting is not often justified due to uneven stands; however, understanding why uneven emergence occurred can help minimize the risk in the future. Additionally, consideration should be given to how uneven early growth can affect the implementation of some management tools…Details
Early season insects and diseases can cause damage and yield loss to corn. Identification of these pests and diseases is important for scouting so that rescue treatments can be applied when needed. Preventative options are also available which can put a grower’s mind at ease.
Spotlight: Early Season Corn Insects 2013
When left undetected and untreated, nematodes can significantly reduce corn yield potential. Symptoms of nematode feeding can easily be misidentified as herbicide injury, soil compaction, sandy soils, and other problems. Corn growers should pull soil samples from low performing areas of fields to determine whether or not nematodes are present. The evaluation of samples taken…Details
Management practices can be implemented to help increase soybean yields and revenue. This includes cultural practices such as planting date, seeding rate, planting depth, and row width. Soil fertility, weed control, and the use of seed treatments are other practices that can help optimize soybean emergence and early growth.
Spotlight: Soy Emergence and Early Growth
Although native to the U.S., waterhemp was not considered a major agronomic problem until the 1980’s-reduced tillage systems, herbicide-resistant biotypes, and simplified weed management programs contributed to its increased prevalence.
Several factors can work together to result in corn leafing out prior to emergence. Other terms for leafing out include unfurling, corkscrew, or twisted mesocotyl. Understanding what the most likely cause was, can potentially help in future situations.
Spotlight: Chilling Injury and Other Causes of Corn Leafing Out Prior to Emergence