Cold Temperature Damage to Small Corn

Recent weather patterns have exposed corn to cold temperatures. Understanding the effects of these weather conditions on corn at different growth stages can help determine the best management options. Additionally, waiting three to five days after the weather event can allow for a more accurate assessment of plant health. Agronomic Alert- Cold temperatures on small…

Insect Resistance Management in Corn

A corn refuge is the key component of an Insect Resistance Management (IRM) plan. Proper implementation of an IRM plan is important and mandatory for corn products that contain B.t. (Bacillus thuringiensis) technology or insect protection traits. Grower compliance is critical to the success of an IRM plan, and new requirements have been incorporated in…

Seed Size and Shape Issues in Corn

Questions arise every year regarding effects of seed size and shape on plantability and yield potential.  Following manufacturers’ recommendations and considering tools to enhance plantability can help limit the risk of poor plantability. If plantability concerns related to seed size are managed properly, the effect of seed size may not significantly affect yield potential under…

Ear Drop Issues in Corn

Dry weather and other stress factors can lead to premature ear drop. Scouting fields and planning for a timely harvest can help minimize preharvest losses.  Weather stress can be a key factor of ear drop issues. Generally, the problem is most severe when extreme high temperatures occur at R1 (silking). These conditions can result in…

Late Season Frost Damage to Corn

An early frost, during the grain-tilling period, in September can cause losses in corn yield and quality. Losses will depend on the temperature, duration, and corn growth stage at the time of the frost. Frost damaged corn management will depend on the corn growth stage and severity of damage. Agronomic ALERT – Late Season Frost…

Top Leaf Death or “dieback” in Corn

Source: R.L. (Bob) Nielsen, Purdue University  |   September 7, 2011 As a corn crop progresses toward physiological maturity, the leaves naturally begin to senesce (die). The timing and pattern of leaf senescence are genetically regulated but are also influenced by environmental triggers, including severe photosynthetic stress. In years where much of the grain fill period is…