alfalfa forage Articles
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Impact of long-term phosphorus and potassium fertilization on alfalfa nutritive value–yield relationships
Phosphorus (P) and potassium (K) increase alfalfa (Medicago sativa L.) yield, but little information is available on how forage nutritive value is affected by P and K fertilization. The objective of this study was to investigate the effect of long-term P and K fertilization on alfalfa yield–forage nutritive value relationships. A factorial experiment with four P and five K treatments was ...
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Living mulch nutritive value in a corn-soybean-forage rotation
Living mulches can function to supply forage in multifunctional cropping systems. Information quantifying nutritive value of forage plants in living mulch cropping systems is limited. The objective of this research was to quantify the nutritive value of forages from different plant functional groups managed as living mulches in 2 of 3 yr and as a forage crop in the third year of this 3-yr corn ...
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Living mulch forage yield and botanical composition in a corn-soybean-forage rotation
Managing forages as living mulches during row crop production requires suppressing the forages to produce economical crop yields. The objective of this research was to identify forage plants with varied growth habit, persistence, and yield potential to provide desirable ecosystem functions in a multifunctional cropping system. Alfalfa (Medicago sativa L.), kura clover (Trifolium ambiguum Bieb.), ...
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USGS Study Points To Biofuel Crop Related Land-Use Change Reducing Honey Bee Habitat
On August 29, 2016, the U.S. Geological Survey (USGS) published a study on the result of land-use changes on North and South Dakota commercial honey bee colonies in the journal Proceedings of the National Academy of Sciences. USGS scientists found that grasslands and other landscape features favored by beekeepers were decreasing, with crops that are avoided by beekeepers, such as corn and ...
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High yielding organic crop management decreases plant-available but not recalcitrant soil phosphorus
Phosphorus is a nonrenewable resource, raising concerns that agricultural practices may deplete reserves. Organic farming with low P inputs can result in deficient levels of plant-available phosphorus (available-P). The purpose of this study was to determine if common organically managed rotations are depleting P reserves or if large reserves still exist in unavailable forms. The research was ...
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High yielding organic crop management decreases plant-available but not recalcitrant soil phosphorus
Phosphorus is a nonrenewable resource, raising concerns that agricultural practices may deplete reserves. Organic farming with low P inputs can result in deficient levels of plant-available phosphorus (available-P). The purpose of this study was to determine if common organically managed rotations are depleting P reserves or if large reserves still exist in unavailable forms. The research was ...
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Enhanced tolerance to multiple abiotic stresses in transgenic Alfalfa accumulating trehalose
Alfalfa (Medicago sativa L.) is an important forage crop in many countries with high biomass production and the third-most-cultivated crop in the United States, with high protein content and potential use as biofuel. Here we describe the use of a chimeric translational fusion of yeast trehalose-6-phosphate synthase (EC 2.4.1.15) and trehalose-6-phosphate phosphatase (EC 3.1.3.12) genes to ...
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Organic and conventional production systems in the Wisconsin integrated cropping systems trial: ii. economic and risk analysis 1993–2006
This article, the second in a series looking at the Wisconsin Integrated Cropping Systems Trial (WICST), reports on the profitability of six conventional and organic systems, with a focus on net returns and associated risk exposure. Several pricing scenarios were compared to evaluate the impact of government programs and organic price premiums. When net return estimates are made using only ...
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Yield, yield components, and forage nutritive value of alfalfa as affected by seeding rate under irrigated conditions
Persistence is a critical component of alfalfa (Medicago sativa L.) crop yield. Our objective was to determine the effect of seeding rate on alfalfa persistence, yield, and yield components and how they evolved over time in irrigated areas with long growing seasons. Two alfalfa cultivars were seeded at four seeding rates (10, 20, 30, and 40 kg ha–1), in three consecutive experiments, and ...
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Combining ability and heterosis for forage yield among elite alfalfa core collection accessions with different fall dormancy responses
Understanding genetic parameters of populations that are being considered for inclusion into plant-breeding programs provides critical knowledge to enhance economic traits of interest. The objective of this study was to determine the genetic parameters influencing forage yield for nine populations selected from the USDA National Plant Germplasm System alfalfa (Medicago sativa L.) core collection ...
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Improving alfalfa irrigation in The west
Alfalfa grown for forage is a major crop in many areas of the western United States. In the arid and semi–arid west, irrigation is required to obtain economic alfalfa yields. Because alfalfa is a perennial crop with a potentially long growing season, it can use a substantial amount of water. Alfalfa production in Imperial County, CA, has been valued at more than $170 million dollars for ...
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