Agronomy Notebook

Factors for Phosphorus loss from land to surface water

Most of us have reduced fertilizer inputs as crop prices have gone down and this is documented by reduced phosphorus fertilizer sales. But still, I am often asked about issues of phosphorus from an agriculture and water quality standpoint, “Is rate the only concern?” Rate, and more appropriately soil test level, is important from a [...]

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Productivity issues for your 2015 corn crop

Yellow corn and soybeans have been widespread the first part of July in most of Ohio. Since May 1, many parts of Ohio have received at least three to four inches above the five-year average. Growing Degree Days (GDD’s) for the same period have accumulated 1,300 to 1,400 units, which is 200 to 300 GDD’s [...]

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Fungicide economics

Mother Nature has been too generous with moisture this year in most of the Corn Belt states. It has hurt some crops but has been conducive to the development for diseases like Northern Corn Leaf Blight and Gray Leaf Spot. Some of the early planted corn has already been sprayed with foliar fungicides. Late planted [...]

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Waterlogged Fairfield County corn

Oxygen a vital nutrient for corn

There are many things in life that we take for granted, such as the sun rising in the east and setting in the west, April 15 being tax day and a salesman showing up just before you were wanting to leave early for the day! There are also some things in the world of crop production [...]

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Is your corn N deficient?

June 2015 has been a very wet month in most of the Corn Belt setting new records in many places. Some of the corn fields I have visited recently are showing N-deficiency symptoms. Nitrogen is one of the most important elements needed by all green plants for chlorophyll production and for photosynthesis. Urgent action is [...]

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corn tassel

Stress during ear development affects corn yield

Understanding how corn ears respond to stress can help determine what stress was present, when the stress occurred, and how to mitigate the stress in the future. Environmental stresses during any of four ear development stages significantly affect the number and weight of harvestable kernels. The four critical stages are: (1) when the corn ear [...]

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Flooding effects on corn

Recent rains have caused a lot of ponding in low lying areas of the fields. What effects would ponding or flooding have on corn plants? Below are some facts: • Under flooded conditions plants can’t breathe and survive for long. Flooding interrupts the breathing and photosynthetic processes of plants. Obviously, plants which are completely covered [...]

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Seedling blights of corn

We like growers to plant their corn early, however, we want them to wait until the ground is ready and soil temperatures are 50 degrees and above. When you have a lot of area to cover, you have to plant when the weather will let you. But this can create opportunities for disease organisms and [...]

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Watch fields for black cutworms

Black Cutworm moths are starting to arrive in the Corn Belt with the recent weather fronts moving from southwest and we need to be ready with the rescue treatments, if necessary. We need to learn about their habits and what to look for while scouting. Some of the important points are as follows: • Black [...]

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Corn plant development

Much of the corn crop has been planted in the Corn Belt but establishing a good plant stand is most important for getting good yields. The seedling stage is the most critical phase in the life of a corn plant. The young stage of every organism is critical for development and productivity of the adults. [...]

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