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Author: John P. Snelling Publisher: ISBN: Category : Clover Languages : en Pages : 150
Book Description
Kura clover (Trifolium ambiguum M. Bieb.) is slow to establish and has low seed yields the year after establishment. Intercropping a cereal grain during clover seed field establishment could provide additional revenue to seed growers, provided that intercropping did not jeopardize future clover seed yields. Factorial combinations of spring- and fall-planted kura clover monocultured, companion-intercropped with wheat (Triticum aestivum L.) at two row widths, and relay-intercropped with wheat at two row widths were compared. Spring-planted clover established better than fall-planted clover as measured by percent ground cover. Both spring- and fall-planted kura clover were better established when relay-intercropped than when companion-intercropped. Spring-planted kura clover relay intercropped with fall wheat established better than any other treatment combinations, comparing favorably with spring-planted kura clover monocultures at 18 months from planting. Kura clover generally did not affect wheat yields. Wide and narrow row spaced wheat generally affected kura clover similarly, with narrow-spaced wheat out yielding wide-spaced wheat. It was concluded that relay-intercropping fall wheat into spring-planted clover does not adversely affect clover establishment and could therefore provide more cash revenue than monocultured clover during the clover establishment period.
Author: John P. Snelling Publisher: ISBN: Category : Clover Languages : en Pages : 150
Book Description
Kura clover (Trifolium ambiguum M. Bieb.) is slow to establish and has low seed yields the year after establishment. Intercropping a cereal grain during clover seed field establishment could provide additional revenue to seed growers, provided that intercropping did not jeopardize future clover seed yields. Factorial combinations of spring- and fall-planted kura clover monocultured, companion-intercropped with wheat (Triticum aestivum L.) at two row widths, and relay-intercropped with wheat at two row widths were compared. Spring-planted clover established better than fall-planted clover as measured by percent ground cover. Both spring- and fall-planted kura clover were better established when relay-intercropped than when companion-intercropped. Spring-planted kura clover relay intercropped with fall wheat established better than any other treatment combinations, comparing favorably with spring-planted kura clover monocultures at 18 months from planting. Kura clover generally did not affect wheat yields. Wide and narrow row spaced wheat generally affected kura clover similarly, with narrow-spaced wheat out yielding wide-spaced wheat. It was concluded that relay-intercropping fall wheat into spring-planted clover does not adversely affect clover establishment and could therefore provide more cash revenue than monocultured clover during the clover establishment period.
Author: Wade H. Shafer Publisher: Springer Science & Business Media ISBN: 1461528321 Category : Science Languages : en Pages : 350
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 36 (thesis year 1991) a total of 11,024 thesis titles from 23 Canadian and 161 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 36 reports theses submitted in 1991, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author: Brock Cameron Blaser Publisher: ISBN: Category : Languages : en Pages : 240
Book Description
Growing winter cereal grains in the North Central U.S. can provide multiple benefits to the current corn (Zea mays L.)/soybean [Glycine max (L.) Merr.] rotation. Intercropping red clover (Trifolium pratense L.) with winter cereal grains can also benefit the cropping rotation by producing forage, contributing nitrogen (N) to subsequent crops, and enhancing soil quality. This cereal grain/red clover intercropping study was conducted during the 2002-03 and 2003-04 growing seasons to determine the best seeding rates for maximizing cereal grain and red clover yields by optimizing resource competition in the intercrop. In March, red clover was frost-seeded at 0, 300, 600, 900, 1200, and 1500 seeds m−2 into winter wheat (Triticum aestivum L.) and triticale (X Triticosecale Wittmack) seeded at 100, 200, 300, and 400 seeds m−2 the previous October. Cereal grain yield, grain yield components, red clover densities, red clover dry matter (DM), forage quality, and late-spring soil N03-N were measured. When examined across species and year, 300 seeds m−2 cereal grain seeding rate was optimum for grain yield and suitable for red clover establishment. Red clover plant densities at cereal grain harvest were 10 to 22% of the seeding rates. Red clover harvests in the late summer, early fall, and following spring resulted in total DM production of 6 to 8 Mg ha−1. In 2004, red clover DM crude protein (CP) and in vitro dry matter digestibility (IVDMD) increased of 10 and 5% and neutral detergent fiber (NDF) decreased 9% as cereal grain seeding rates increased from 100 to 400 seeds m−2. Forage quality also increased in both study years as red clover seeding rates decreased, but in both forage quality situations the differences were minor. In one study year, soil NO3-N concentrations were slightly greater than the no clover treatment when red clover seeding rates were>900 seeds m−2. The results suggested a winter cereal grain/red clover intercrop could be successfully established in the North Central U.S. using a winter cereal grain seeding rate of 300 seeds m−2 and red clover seeding rates between 900 to 1200 seeds m−2 with minor changes in red clover forage quality and soil NO3-N.
Author: W. H. Shafer Publisher: Springer Science & Business Media ISBN: 9780306444951 Category : Education Languages : en Pages : 368
Book Description
Volume 36 reports (for thesis year 1991) a total of 11,024 thesis titles from 23 Canadian and 161 US universities. The organization of the volume, as in past years, consists of thesis titles arranged by discipline, and by university within each discipline. The titles are contributed by any and all a
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