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Book Effect of Nitrogen Application on Winter Wheat Under Zero Tillage and Spring Wheat Under Zero and Conventional Tillage microform

Download or read book Effect of Nitrogen Application on Winter Wheat Under Zero Tillage and Spring Wheat Under Zero and Conventional Tillage microform written by Brandon James Green and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1990 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Nitrogen Application on Winter Wheat Under Zero Tillage and Spring Wheat Under Zero and Conventional Tillage

Download or read book Effect of Nitrogen Application on Winter Wheat Under Zero Tillage and Spring Wheat Under Zero and Conventional Tillage written by Brandon James Green and published by . This book was released on 1990 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Interactive Effects of Nitrogen and Moisture on No till Wheat Production microform

Download or read book Interactive Effects of Nitrogen and Moisture on No till Wheat Production microform written by Jack Mervon Carefoot and published by National Library of Canada. This book was released on 1987 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Growing Winter Wheat on the Great Plains

Download or read book Growing Winter Wheat on the Great Plains written by Ellery Channing Chilcott and published by . This book was released on 1917 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Limited rainfall is the controlling factor in crop production in the Great Plains. The average yields of a series of years can be foretold from the records of past years; but because the rainfall is fluctuating in amount and uncertain in distribution, the yields of a simple year can not be foretold with any certainty. The chances of success are, however, much better when the soil is wet to a considerable depth at seeding time than they are when the soil contains little or no available water at that time. The relation between the amount of water in the soil at seeding time and the yield is much closer with winter wheat than with other crops. This crop should, therefore, be seeded on the best-prepared land and that in which the greatest amount of water is stored. Except in the southern section, the response of winter wheat to summer tillage is greater than that of any other crop. Summer-tilled land should be seeded to winter wheat wherever this crop can be grown. The growth of corn is one of the best preparations for winter wheat, especially north of Kansas. With increase in the length of season and the time between harvest and seeding, there is an increase in the value of early preparation for winter wheat. In the northern section the crop can be replaced with spring wheat without serious loss. In the central section winter wheat has a greater advantage over spring wheat and can not be replaced by the latter without serious loss. In the southern section, winter wheat is less certain and less productive than farther north and can not be replaced by spring wheat. It is, however, profitably raised under favorable conditions of oil, season, and preparation. In this section particularly it should be recognized that the chances of producing a crop are low when it is seeded on land that does not contain water enough in storage to wet the soil to a depth of 3 feet."--Page 2

Book Long term Effects of Tillage Nitrogen and Rainfall on Winter Wheat Yields

Download or read book Long term Effects of Tillage Nitrogen and Rainfall on Winter Wheat Yields written by Kelli Marie Camara and published by . This book was released on 1999 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winter wheat is commonly grown in dryland cropping systems in the Pacific Northwest region of semi-arid eastern Oregon. For agronomic, economic, and environmental reasons, it is important to understand the long-term sustainability of such dryland systems. The objective of this study was to evaluate the long-term effects of tillage, nitrogen (N), soil depth, and the influence of precipitation on wheat yields in dry land cropping systems of eastern Oregon. Data were taken from the Tillage/Fertility or "Balenger" experiment, which was established in 1940 by a Soil Conservation employee, and is one of the oldest replicated research experiments in the western United States. The experiment consisted of a winter wheat-summer fallow rotation arranged in a randomized block design with three replications. The main plot consisted of three primary tillage treatments (moldboard plow, offset disk, and subsurface sweep) and subplots consisted of six nitrogen treatments that changed over time and most recently ranged from 0 to 180 kg ha−1. Soil depth of individual plots ranged from 1.2- to 3.0-m. The study was divided into four main time periods (1940-1951, 1952-1961, 1962-1987, and 1988-1997) within which experimental treatments were consistently maintained. The moldboard plow tillage treatment significantly increased yields by more than 300 kg ha−1 over the subsurface sweep tillage treatment in all four time periods. Yields with the moldboard plow system were significantly higher than with the offset disk system in time periods 3 and 4. The same trend was evident for mean yield in time periods 1 and 2, but differences were not statistically significant. In time periods 1, 2, and 3, mean yields were higher with the offset disk tillage treatment than the subsurface sweep tillage system, although the differences were not statistically significant. In time period 4, mean yield was higher for the subsurface sweep system than the offset disk treatment, but differences were not statistically significantly. The optimum amount of N for winter wheat differed from year to year, within, and between experiment periods. This was apparently in response to rainfall patterns and improved management factors, specifically more N responsive semi-dwarf varieties. For time period 1, the maximum fertilizer rate was 11.2 kg N ha−1, which tended to produce higher mean grain yields than an application rate of than 0 kg N ha−1, regardless of the quantity or distribution of precipitation. For time period 2, the maximum fertilizer rate was 33.7 kg N ha−1, which produced significantly higher grain yields than an application rate of than 0 kg N ha−1, regardless of the quantity or distribution of precipitation. For time period 3 (1962-1987), which had below-normal annual and growing season precipitation, yield increased with the addition of 45 kg N ha−1. For time period 4 (1988- 1997), which had above-normal annual and growing season precipitation, yield increased with the addition of 90 kg N ha−1. Yield increases at greater rates of N were insignificant. For time periods 3 and 4, maximum mean yield was obtained at an application rate of 135 kg N ha−1. The response of wheat yield to N during dry years was greater for deep (> 2.8 m) soils than for shallow soils. In addition to amount, rainfall distribution during the winter (October to March) and growing (April to June) season significantly affected yield. Results demonstrate the importance of rainfall and nitrogen to winter wheat production in eastern Oregon, and that the most environmentally sound tillage systems are not necessarily the most profitable from farmers' point of view.

Book Impact of Zero Tillage in Wheat on Physical Properties of Soils and Growth and Yield of Wheat Under Rice Wheat Cropping System

Download or read book Impact of Zero Tillage in Wheat on Physical Properties of Soils and Growth and Yield of Wheat Under Rice Wheat Cropping System written by Anil Kumar and published by . This book was released on 2004 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Time of Nitrogen Application on Different Varieties of Wheat Triticum Aestivum L Under Bed Planting and Conventional Tillage with CD Copy

Download or read book Effect of Time of Nitrogen Application on Different Varieties of Wheat Triticum Aestivum L Under Bed Planting and Conventional Tillage with CD Copy written by Bhardwaj Vikas and published by . This book was released on 2005 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Nitrogen Fertilizer on Yield and Protein Content of Winter Wheat in Utah

Download or read book Effect of Nitrogen Fertilizer on Yield and Protein Content of Winter Wheat in Utah written by Howard Boyd Peterson and published by . This book was released on 1952 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Bibliography of Agriculture

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1998 with total page 2312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Long term Zero Tillage in Wheat on C and N Fractions of Different Textured Soils Under Rice wheat Cropping System Wiyh CD Copy

Download or read book Effect of Long term Zero Tillage in Wheat on C and N Fractions of Different Textured Soils Under Rice wheat Cropping System Wiyh CD Copy written by Meenakshi and published by . This book was released on 2016 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: