Research Updates

Chart of residue required for different slopes

Crop Residue and High-Carbon Char: Potential Soil Conservation Tools

May 8, 2018

Soil is the single most important resource on which our agriculture depends. Proper soil management is necessary to sustain long-term agricultural productivity. Soil loss through erosion or run-off hurts agricultural production with depletion of organic matter and fertility. It also has environmental implications.

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Soybean fields in planting date study at UNL's East Campus
Planting date studies conducted on UNL's East Campus showed yield decreases of 1/4 bu/ac (2003) and 5/8 bu/ac (2004) for each day after May 1 that soybean were planted.

Amplifying Positive Impacts of Early Soybean Planting

April 19, 2018
The benefits of planting soybean near May 1 are well documented. Now, what are the next steps growers can take to further expand on these benefits? Are different maturity groups warranted? What groups are typically being used in irrigated and rainfed environments in Nebraska?

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Figure 1. Planting into cold soil (below 50°F) when cold conditions are expected for the next 48 hours can lead to germination problems and seedlings not emerging or not emerging well. 1a. Corn seedling that started leafing out below ground and now has twisted leaves which will delay or negate normal plant development.. Figures 1b-c. Unemerged seedlings attempting to leaf out belowground. None of the seedlings shown should be counted as a productive plant.
Figure 1. Planting into cold soil (below 50°F) when cold conditions are expected for the next 48 hours can lead to germination problems and seedlings not emerging or not emerging well. 1a. Corn seedling that started leafing out below ground and now has twisted leaves which will delay or negate normal plant development.. Figures 1b-c. Unemerged seedlings attempting to leaf out belowground. None of the seedlings shown should be counted as a productive plant.

Cold Soil Temperature and Corn Planting Windows

April 12, 2018
With stormy conditions back in the picture, many growers may be concerned about planting corn into cold, wet soils? By checking weather forecasts and soil temperature at planting (in the field and online) and the cold tolerance of seed, growers can identify 48-hour windows of opportunity for planting.

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KSU Assesses Yield Potential of Drought-Tolerant Corn

April 12, 2018
Research by Kansas State University on yield potential of drought-tolerant corn showed yields varied but often were equal to their non-DT counterparts. The advantage of the DT hybrids became more evident when the water stress increased to the point of leaves rolling most days.

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Graph of yields from soybean population study

What On-Farm Research has Taught Us about Soybean Seeding Rates

April 6, 2018
More than a decade of on-farm research studies in Nebraska show how soybean seeding rates (and the related input costs) can be reduced without significantly affecting yield. See what growers learned and consider whether a change might benefit your bottom line.

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Alternative Nutrient Supply Products: Highlights of On-Farm Research Results

April 5, 2018
Are you considering using a new soil nutrient product this season? Learn what farmers learned from these nine studies of alternative nutrient supply products and practices, conducted as part of the Nebraska On-farm Research Network (NOFRN) in 2017.

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What’s New with P Fertilizer Use?

April 5, 2018
Studies conducted at three sites over six years with varying levels of phosphorus (P) applications indicate when a P application may be profitable.

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What’s New with K Fertilizer Use?

April 5, 2018
Three studies with a total of 50 trials applying K at various rates to corn verified that the likelihood of a profitable response is very low if the soil test level is above 125 ppm.

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