Continuous corn is the most common irrigated crop sequence in southwest Nebraska. Although rotating to other crops, such as soybeans, can mitigate some production issues of continuous corn and often boost the next year’s corn yield, larger adoption of soybeans has not readily occurred in this area.
Public universities and private companies were contacted early in 2019 to provide input on the study protocol that would compare multiple fertility programs for soybeans in western NE. A total of 12 fertility programs were compared.
Yellow field peas (Pisum sativum L.) recently gained popularity across Nebraska due to their rotational benefits and increase in consumers' demand for plant-based alternatives to meat and dairy products.
To study the effects of several agronomic practices on corn yield in western Nebraska, a strip trial was conducted at the Henry J. Stumpf International Wheat Center at Grant during the 2018 and 2019 growing seasons.
Grain sorghum variety testing was conducted at the Henry J. Stumpf International Wheat Center near Grant this year. The trial of 24 grain sorghum varieties also evaluated the effects of row spacing, comparing 15- and 30-inch rows.
Research in southwest Nebraska looks at potential water savings from adding field peas and chickpeas in corn-soybean rotations where irrigation water is limited. Both pea crops efficiently used early-season precipitation for good yields.
In southwest Nebraska, irrigating corn and soybeans with limited water is challenging due to typically dry weather conditions and high crop water use (i.e., evapotranspiration or ET) in July and August.