Technical Report
 

Forage and Grain Yield Potential of Non-Irrigated Spring Grains in the Klamath Basin, 2010

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https://ir.library.oregonstate.edu/concern/technical_reports/j6731c10s

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  • Concerns were raised about loss of soil from wind erosion with the announcement in early 2010 that most Klamath Reclamation Project water users would receive a delayed and reduced rate of irrigation water during the 2010 growing season, with some areas potentially receiving no irrigation water for the entire season. Fields that had grown grain, hay, or other similar crops in 2009 had adequate cover from vegetative residues to prevent wind erosion damage. The main wind erosion concern was for fields that had grown potatoes or onions during the 2009 growing season or that were tilled in the fall of 2009 in preparation for 2010 row crops and thus had little or no vegetative cover. A secondary concern was the potential for weeds to proliferate where non-irrigated fields were not managed with some type of crop cover. In 2001 a more severe irrigation reduction occurred and both wind erosion and weed proliferation were significant problems in some areas that year. In the Klamath Basin, annual cereal forages produce one cutting and typically result in a high biomass yield of hay suitable for feeding many types of livestock. Cereal hay prices are generally lower than those of higher quality hay such as alfalfa, perennial grass, and grass/alfalfa mixtures, but may prove to be useful in a drought situation. Cereal crops are commonly seeded following potatoes and are harvested for either grain or forage, thus utilizing some of the nutrients that may remain in the soil from the potato crop. In 2010, a completely non-irrigated spring cereal grain and forage trial was conducted at KBREC. The goal of this trial was to find an effective cover crop, requiring minimal inputs, which could minimize soil erosion and discourage weed growth in fields where irrigation water is not available, while still producing a harvestable crop. Some entries repeated results from a smaller and simpler non-irrigated spring grain trial conducted at KBREC in 2001 (Clark and Smith, 2002).
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