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M. Lenny Wells

instability in fuel and fertilizer prices have led pecan producers to once again consider the use of various legumes such as crimson clover as an orchard floor cover to supplement tree N requirements. Smith et al. (1996) suggested that a combination of

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M. Lenny Wells

developed and put into use for pesticide application, grazing cattle in the orchard was discontinued in many areas. Rising N fertilizer costs have led pecan producers to once again consider the use of various legumes such as crimson clover as an orchard

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Ian Lane, Eric Watkins and Marla Spivak

currently managed as uniform monocultures, they are often host to flowering plants that provide foraging resources for bees and other pollinators. A recent insect survey of park lawns hosting dandelion ( Taraxacum officinale F.H. Wigg.) and white clover

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M. Lenny Wells

, grazing cattle in the orchards was discontinued by most growers. Recent instability in fuel and fertilizer prices have led pecan producers to once again consider the use of various legumes such as crimson clover as an orchard floor cover to supplement the

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David Granatstein, Joan R. Davenport and Elizabeth Kirby

’ birdsfoot trefoil, ‘Jumbo’ ladino white clover, and kura clover) were direct-seeded into the 1.3 m strip using a Truax Flex-II no-till grass drill (Truax Co., New Hope, MN) with six drill rows at 20-cm spacing. Seeding rates (kg·ha −1 ) were as follows

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James D. McCurdy, J. Scott McElroy and Elizabeth A. Guertal

“unimproved” turfgrass areas, the environmental benefits of biodiversity may outweigh those of a monoculture. White clover inclusion within maintained turfgrass has mainly been limited to cool-season turfgrass scenarios. Research by Sincik and Acikgoz (2007

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Bret Sparks, Gregg Munshaw, David Williams, Michael Barrett, Jeffrey Beasley and Paul Woosley

managers. Materials and Methods Inoculation of WC seed. Ten grams of DW and MC (both cultivars supplied by DLF-Pisckseed, Tangent, OR) seed were placed in separate plastic storage bins. Twenty-eight grams of Nitragin Gold Clover inoculant (Novozymes

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Lee S. Altier and H. Christian Wien

In a two-year field experiment, sweet corn was intercropped with a perennial cover of white clover. The clover was suppressed after corn emergence by rototilling. The nitrogen exchange between the corn, clover, and soil was closely monitored. Soil sampling indicated the rate and amounts of mineralization of nitrogen from soil organic matter and clover. Fertilizer labelled with 15-N was used to assess contributions of nitrogen from the various sources.

Results from 1989 showed little nitrogen benefit to the corn from the clover. Content of 15-N in the corn indicated that non-fertilizer nitrogen uptake was similar in monocropped and intercropped corn treatments. Corn yields were correlated with the amount of nitrogen fertilizer applied.

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Sharon R. Funderburk and Wanda W. Collins

Crimson clover Trifolium incarnatum L.) was used as a N source for sweet potato [Ipomoea batatas (L.) Lam.]. Treatments were designed to compare estimated N delivery by clover incorporation amounts of N delivered by inorganic fertilizer. Plants were sampled every 14 days and sectioned into four parts: shoots, stem tips, fibrous and storage roots. Dry matter content was significantly influenced by time. Total plant dry matter was lowest in the highest inorganic N treatment. Nitrogen concentration (DWB) decreased over time and was highest in the highest inorganic N treatment. Similar vine weights were noted in N and clover treatments while number of storage roots per plant was unaffected by treatment as was weight per storage root, which increased linearly over time. No significant difference existed between the high and low N application treatment or late clover incorporation treatment in any grade of storage roots except culls, which were 90% lower in clover treatments than in N fertilizer treatments.

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Lee S. Altier and H. Christian Wien

In a two-year field experiment, sweet corn was intercropped with a perennial cover of white clover. The clover was suppressed after corn emergence by rototilling. The nitrogen exchange between the corn, clover, and soil was closely monitored. Soil sampling indicated the rate and amounts of mineralization of nitrogen from soil organic matter and clover. Fertilizer labelled with 15-N was used to assess contributions of nitrogen from the various sources.

Results from 1989 showed little nitrogen benefit to the corn from the clover. Content of 15-N in the corn indicated that non-fertilizer nitrogen uptake was similar in monocropped and intercropped corn treatments. Corn yields were correlated with the amount of nitrogen fertilizer applied.