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Tag "Bob Nielsen"

Indiana Corn: The ‘Zipper’ Pattern of Poor Kernel Set

Indiana Corn: The ‘Zipper’ Pattern of Poor Kernel Set

👤By Bob Nielsen, Purdue University Extension Agronomist 🕔Oct 13, 2017

The occurrence of severe photosynthetic stress (severe drought, extreme heat, severe nutrient deficiency, severe foliar disease) during or shortly after pollination in corn often results in poorly filled ears due to incomplete pollination or abortion of young kernels. Often such

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Indiana Corn: What Causes Low Grain Test Weight?

Indiana Corn: What Causes Low Grain Test Weight?

👤By Bob Nielsen, Purdue University Extension Agronomist 🕔Sep 25, 2017

Among the top 10 most discussed (and cussed) topics at the Chat ‘n Chew Cafe during corn harvest season is the grain test weight being reported from corn fields in the neighborhood. Test weight is measured in the U.S. in

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Indiana Corn: Converting Wet Grain Weight to Dry Grain Weight

Indiana Corn: Converting Wet Grain Weight to Dry Grain Weight

👤By Bob Nielsen, Purdue University Extension Agronomist 🕔Sep 25, 2017

Corn is often harvested at grain moisture contents higher than what is desired by grain buyers, which is typically about 15% moisture. Wetter grain obviously weighs more than drier grain and so grain buyers will “shrink” the weight of “wet”

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Ohio Corn: Are Late Maturing Fields at Risk of Frost Injury?

Ohio Corn: Are Late Maturing Fields at Risk of Frost Injury?

👤By Peter Thomison, Ohio State University Extension Specialist 🕔Sep 12, 2017

According to the National Agricultural Statistics Service as of Sept. 10, 69 percent of Ohio’s corn acreage was in the dent stage (R5) compared to 76 percent for the five-year average; 16 percent of the corn acreage was mature, slightly less

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Ohio Corn: Stress During Grain Fill? Expect Stalk Health Problems

Ohio Corn: Stress During Grain Fill? Expect Stalk Health Problems

👤By Bob Nielsen, Ohio State University Agronomist 🕔Aug 25, 2017

Serious crop stress during the grain filling period of corn increases the risk of stalk rots and stalk lodging (breakage) prior to grain harvest. Among the more common serious stresses that can occur during grain fill are nitrogen deficiency, foliar diseases (e.g.,

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Indiana Corn: Estimating Grain Yield Prior to Harvest – 2 Prediction Methods

Indiana Corn: Estimating Grain Yield Prior to Harvest – 2 Prediction Methods

👤By Bob Nielsen, Purdue University Extension Agronomist 🕔Aug 18, 2017

Fancy colored yield maps are fine for verifying grain yields at the end of the harvest season, but bragging rights for the highest corn yields are established earlier than that down at the Main Street Cafe, on the corner of

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Indiana Corn: Good Pollination Conditions Help Offset Early Challenges; Scout Fields for Diseases

Indiana Corn: Good Pollination Conditions Help Offset Early Challenges; Scout Fields for Diseases

👤By Bob Nielsen, Purdue University Extension Agronomist 🕔Aug 10, 2017

A rough start to the growing season put Indiana’s corn crop behind the proverbial 8-ball from the beginning, due to the weather- and disease-driven challenges to germination, emergence, and early establishment of the young plants. Many fields were replanted, fully

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Indiana Corn: Poor Kernel Set Can Stem from a Variety of Issues

Indiana Corn: Poor Kernel Set Can Stem from a Variety of Issues

👤By Bob Nielsen, Purdue University Extension Agronomist 🕔Aug 10, 2017

The post-pollination scuttlebutt overheard in coffee shops throughout Indiana during late summer often revolves around the potential for severe stress that might reduce kernel set or kernel size in neighborhood cornfields. Growers’ interest in this topic obviously lies with the

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Indiana: Agronomy Field Day, West Lafayette, Sept. 7

Indiana: Agronomy Field Day, West Lafayette, Sept. 7

👤By Darrin Pack, Purdue University 🕔Jul 24, 2017

Farmers trying to balance weak crop prices and rising input costs can learn more about farm financial fitness at a field day sponsored by Purdue Extension, the Purdue Department of Agronomy, the Indiana Soybean Alliance and the Indiana Corn Marketing

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Indiana Corn: Silk Development and Emergence

Indiana Corn: Silk Development and Emergence

👤By Bob Nielsen, Purdue University Agronomist 🕔Jul 7, 2017

The corn plant produces individual male and female flowers (a flowering habit called monoecious for you corny trivia fans.) Interestingly, both flowers are initially bisexual (aka “perfect”), but during the course of development the female components (gynoecia) of the male flowers

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