Download or read book Corn Zea Mays L Yields as Influenced by Nitrogen Row Spacing and Intercropped Ryegrass Lolium Multiflorum written by Paibool Wivutvongvana and published by . This book was released on 1974 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two field corn experiments were conducted on a Woodburn silt loam soil near Corvallis, Oregon, in 1972-1973 to investigate the effects of certain soil management practices on the yield and performance of corn (Zea mays L.). Experiment I involved variables that included three corn row spacings (76, 114, and 152 cm) with annual ryegrass (Lolium multiflorum) interplanted at three different dates between the corn rows. Average dry matter corn yield of 17.6 m ton/ha obtained in the 76 cm spaced rows decreased by 16% as the row spacing increased to 114 cm. Increasing the row spacing from 114 to 152 cm did not affect corn yield. Corn yield was reduced when grass was interplanted in the widely spaced corn rows. A 35% corn plant yield decrease resulted when grass was planted on May 25 in the 152 cm wide corn rows as compared with the 76 cm row spacing. A further 15% reduction in corn yields occurred when ryegrass intercropped in the 152 cm rows was compared with yield from 76 cm rows which had no grass intercrop. Intercropping with ryegrass had no adverse effect on corn yield provided that such grasses were planted on July 24 or October 7 in the 76 cm spaced corn rows. Previous field history and the relatively high nitrogen taken up by the combined corn and grass crops suggested that the experimental area contained considerable residual soil nitrogen. Experiment II aimed at elucidating the effects of rate and method of applied nitrogen have on the yields from differently spaced corn. A 14% increase in dry matter yield of corn was obtained when row spacing was reduced from 91 to 61 cm. Moisture loss due to evaporation from the soil surface in the wide corn rows was higher than in the narrow spaced corn, Small dry matter corn yield increases were observed as nitrogen fertilizer rates increased from 140 to 196 Kg N/ha or from 196 to 252 Kg N/ha, respectively. The significant corn yield increase resulting from 252 Kg N/ha over the 140 Kg N/ha rates represented an 8% increase. No differences in corn yield were noted due to methods of nitrogen application.
Download or read book O S U Theses and Dissertations 1970 1977 written by Oregon State University and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corn Zea Mays L Hybrids as Affected by Row Spacing Grain Yields Components of Yield and Grain Nitrogen of Five Double Cross Hybrids Total Nitrogen and Nitrate Nitrogen in Different Plant Parts of Six Single Cross Hybrids written by John Abbott Shrader and published by . This book was released on 1967 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomy News written by and published by . This book was released on 1991 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.
Download or read book Non Chemical Weed Control written by Khawar Jabran and published by Academic Press. This book was released on 2018-01-03 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-Chemical Weed Control is the first book to present an overview of plant crop protection against non-food plants using non-chemical means. Plants growing wild—particularly unwanted plants found in cultivated ground to the exclusion of the desired crop—have been treated with herbicides and chemical treatments in the past. As concern over environmental, food and consumer safety increases, research has turned to alternatives, including the use of cover crops, thermal treatments and biotechnology to reduce and eliminate unwanted plants. This book provides insight into existing and emerging alternative crop protection methods and includes lessons learned from past methodologies. As crop production resources decline while consumer concerns over safety increase, the effective control of weeds is imperative to insure the maximum possible levels of soil, sunlight and nutrients reach the crop plants. - Allows reader to identify the most appropriate solution based on their individual use or case - Provides researchers, students and growers with current concepts regarding the use of modern, environment-friendly weed control techniques - Presents methods of weed management—an important part of integrated weed management in the future - Exploits the knowledge gained from past sustainable weed management efforts
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1983 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1973- include the following subject areas: Biological sciences, Agriculture, Chemistry, Environmental sciences, Health sciences, Engineering, Mathematics and statistics, Earth sciences, Physics, Education, Psychology, Sociology, Anthropology, History, Law & political science, Business & economics, Geography & regional planning, Language & literature, Fine arts, Library & information science, Mass communications, Music, Philosophy and Religion.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1977 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1986 with total page 1920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of Corn Zea Mays L as Influenced by Cultural Practice and Genotype in Several Field Environments written by Joseph Warren Peek and published by . This book was released on 1968 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yield and Growth Parameters of Corn zea Mays L as Influenced by Time Rate and Method of Nitrogen Application written by James Ellis Hairston and published by . This book was released on 1978 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Time of Nitrogen Application on Corn Zea Mays L Yields Under Two Tillage Systems written by David Ralph Kelsey and published by . This book was released on 1972 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomic and Physiological Aspects of Nitrogen and Water Management for Monocrop Corn and Corn Competing with a Ryegrass Intercrop written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corn Zea Mays L Yield and Water Use as Influenced by Irrigation Level Nitrogen Fertilization and Plant Population written by Bakelana Ba Kufimfutu and published by . This book was released on 1981 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nitrogen Content of Corn Zea Mays L Grain as Affected by Variety Population and Location written by Lester Verlin Boone and published by . This book was released on 1972 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
