STUesday-Vegetative Soybean Growth Stages & Scouting Tips

- VE: Emergence Soybeans germinate when the seed absorbs half its weight in water. The radical (primary root) emerges first. The hypocotyl (stem) follows soon, growing upward and pulling the cotyledons (“seed leaves”) with it.The hypocotyl extends and the cotyledons open and begin to turn green. Emergence occurs 5 to 10 days after planting, depending on field conditions. Lateral roots begin to grow and absorb water and nutrients. Tips Slug Damage to Corn and Soybeans VC: Cotyledon The VC stage begins...

STUesday-Nitrogen Uptake in Corn

- Summary DuPont Pioneer scientists are conducting extensive research designed to increase corn yields by improving the nitrogen use efficiency (NUE) of hybrids. Understanding nitrogen (N) uptake patterns is integral to improvement of corn NUE by scientists and optimal management of corn N supply by growers. Recent DuPont Pioneer and university research gives new insights into the timing of N uptake and sources of N utilization by corn, including: N for grain development originates from both remobilized N from vegetative tissues...

STUesday- Corn Stand & Replant Decisions

- Corn can face many different stresses capable of reducing stands, such as cold or wet soils, insect feeding, and unfavorable weather conditions. In severe cases of stand reduction, growers will need to determine if replanting will be more profitable than keeping the current crop. Stand Evaluation Stand counts. Step one in a replant decision is to determine how much the current corn stand has been reduced from the targeted stand. Reduced stands of healthy plants are easier to assess than...

STUesday-Purple Corn & Uneven Seedling Growth

- When corn plants emerge, it’s not uncommon for seedlings to have a purplish tint or some uneven early growth. These observations often worry some corn growers. However, when the purple color disappears—usually after the six-leaf stage—so do growers’ concerns. The ultimate goals of corn production are harvestability and yield, and current evidence shows purple seedling color does not relate to either. Concern about purple seedling color is understandable. If there is something wrong, growers want to know the cause of...

STUesday-Tips for High Soybean Yield

- Early Planting Tends to Deliver Higher Soybean Yields Choosing when to start planting may be one of the most important decisions soybean growers make each year. In general, planting earlier than tradition sets the crop up for higher yields. Unfortunately, no 2 years are the same: Planting early offers potential rewards and potential risks. “Planting date is key,” says Dan Poston, DuPont Pioneer agronomy research manager in the southern U.S. “The effect is real and demonstrable.” Data from DuPont Pioneer...

STUesday – Nitrogen Fertility for High Yield Soybeans

- Soybean yields across the US continue to advance with better management and higher yielding genetics. In 2016 a new national yield record was achieved and broadly reflected from east to west in the major soybean production areas of the US (Figure 1). As yield levels continue to increase, questions arise whether plant nutrient recommendations developed over the past several decades still apply to fields where soybean yield goals far surpass the national average. Many growers in highly productive area are...

STUesday – Consideration for Early Planted Corn

- Overview Farmers often plant corn very early to increase yield potential and to avoid weather delays late in the season. Early planting offers potential advantages, but it also carries risks related to cold injury and damage from pests. Critical factors for deciding how early to plant include current soil temperature and moisture conditions and the near term weather forecast to optimize the planting “window”. Ultra-early planted corn may require up to four weeks to emerge, depending on soil and weather...

STUesday – Delayed corn planting considerations

- Delayed corn planting considerations – When do I switch corn maturities? Much of the Corn Belt is seeing delayed corn plantings due to first, cold soil temps and then excess soil moisture. It seems like the closer we get to May 1st there are more conversations and questions of when do I start switching to earlier maturities.  I still think for the majority of the Corn Belt the optimum planting date is from April 15th to May 15th with your...

STUesday – Seedbed Preperation

- Seedbed preparation.   Determining when soils are fit. There is a quick and easy test to give you a good idea if your soil is ready for tillage or planting to give you a good seedbed.  Dig down 2-4” into the soil and grab a handful and squeeze it.  Soils that is too wet for tillage or planting will: Feel tacky Be able to make a ball or the soil will stick together Make a ribbon (squeeze between your thumb...