Download or read book Tillage Effects on Properties of Grantsburg Soil and Growth of Corn zea Mays L written by Bernard Kipkemoi Kitur and published by . This book was released on 1992 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: A three-year tillage project, involving three treatments of no-tillage (NT), chisel-plow (CP), and moldboard plow (MP), was conducted in Southern Illinois. The objectives of the study were to: (1) determine effects of tillage on properties of a sloping and eroded Grantsburg soil (fine-silty, mixed, mesic Typic Fragiudalf); (2) evaluate effects of tillage on growth and yields of corn; (3) relate the soil property changes as affected by tillage to the growth and yields of corn grown on the plot area on a yearly rotation system; and (4) evaluate the tillage systems for restoration and maintenance of soil productivity. Effects of tillage on mechanical strength were mainly confined to the plow-layer. Soil bulk density was generally higher for NT at planting; however, the bulk density for CP and MP treatments increased later in the season attaining values that were comparable to those of the NT treatment. Tillage reduced soil aggregate stability, organic C, and plant residues remaining at the soil surface at planting. Soil temperature was lower for NT than MP at planting. At planting in 1989, 1990 and 1991, total- and air-porosity were lower for NT than MP. However, later in the season in 1991, NT had higher total- and air-porosity than MP. Plant population was lower for NT as compared to MP during the 1st year, but higher as compared to CP during the 3rd year. Corn grain yield in 1989 was highest for MP and lowest for NT (8400, 9300 and 10500 kg/ha respectively, for NT, CP and MP). The corn yields for 1991 for all treatments were 2300 to 4400 kg/ha lower than for 1989 due primarily to low amount and poor distribution of rainfall as well as insufficient plant available soil water in 1991-growing season.

Download or read book Modelling Tillage Effects on Soil Physical Properties and Maize Zea Mays L Development and Growth written by Frédéric Antoine Dadoun and published by . This book was released on 1993 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Deep Tillage Effects on Soil Properties Crop Growth and Yield of Corn and Soybean written by Bryan Dean Young and published by . This book was released on 2002 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Three Conservation Tillage Systems on Corn Zea Mays L Growth and Productivity written by Ali M. Al-Darby and published by . This book was released on 1986 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Tillage and Herbicides on Corn Zea Mays L Production Net Return Weeds and Soil Properties written by Jun Zhang and published by . This book was released on 1992 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Tillage on Soil Physical Properties and the Availability of Nitrogen Phosphorus and Potassium to Corn Zea Mays L written by John Frazeur Moncrief and published by . This book was released on 1981 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Tillage on the Physical Properties of the Soil and Its Relation to Growth and Yield of Corn written by Madhavanpillay Sukumaran Nair and published by . This book was released on 1949 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Tillage Practices on Soil Physical Properties Growth and Yield of Maize Zea Mays L written by Manohar Lal Batra and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tillage Effects on Seedbed Physical Properties written by Mataba Tapela and published by . This book was released on 2001 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intensive tillage requires high energy input and may be detrimental to the environment. There is a need to develop decision support tools to assist farmers in determining optimum tillage intensity for high yields. Previous studies developed quantitative indices that related tilth conditions to yield. The indices, however, proved to be inadequate and sometimes inconsistent. Thus, a three-part research project was carried out from 1998 to 2000 to quantify seedbed condition following tillage and to explain subsequent variation in corn (Zea mays L) yield. Conventional and spatial statistics were used to study the effects of bulk density, penetration resistance and soil moisture content on and biomass at the V2 growth stage (the corn growth stage when the collar of the second leaf has fully developed), and grain yield. A soil condition index was developed and it combined soil physical properties into a single value that was related to yield using regression methods. The soil condition index gave promising results for prediction of early season plant biomass, but was not helpful in predicting grain yield. Confounding of weather conditions made it difficult to determine the true functional relationship between soil tilth and crop yield. Yield and soil map overlays revealed spatial patterns that would have otherwise been aggregated' if only conventional statistical methods were used. With careful experimental design, the impact of weather and other sources of experimental error in tillage trials could be minimized. The research project provided a framework for future experiments focused on quantifying soil tilth.

Download or read book Effects of Deep Tillage and Tillage Management on Soil Properties and Corn Growth Responses written by David A. Farquhar and published by . This book was released on 1994 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Tillage Effects on Soil Properties and Corn Yields in Central Michigan written by Michael James Staton and published by . This book was released on 1988 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Tillage Bibliography written by Jane P. Gates and published by DIANE Publishing. This book was released on 1994-12 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: 338 citations with abstracts covering tillage, mulch, chisel, conservation, sod, ridge, etc. plus author and subject indexes.

Download or read book Managing Agricultural Greenhouse Gases written by Mark Liebig and published by Academic Press. This book was released on 2012-10-16 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global climate change is a natural process that currently appears to be strongly influenced by human activities, which increase atmospheric concentrations of greenhouse gases (GHG). Agriculture contributes about 20% of the world’s global radiation forcing from carbon dioxide, methane and nitrous oxide, and produces 50% of the methane and 70% of the nitrous oxide of the human-induced emission. Managing Agricultural Greenhouse Gases synthesizes the wealth of information generated from the GRACEnet (Greenhouse gas Reduction through Agricultural Carbon Enhancement network) effort with contributors from a variety of backgrounds, and reports findings with important international applications. Frames responses to challenges associated with climate change within the geographical domain of the U.S., while providing a useful model for researchers in the many parts of the world that possess similar ecoregions Covers not only soil C dynamics but also nitrous oxide and methane flux, filling a void in the existing literature Educates scientists and technical service providers conducting greenhouse gas research, industry, and regulators in their agricultural research by addressing the issues of GHG emissions and ways to reduce these emissions Synthesizes the data from top experts in the world into clear recommendations and expectations for improvements in the agricultural management of global warming potential as an aggregate of GHG emissions

Download or read book The Effects of Herbicide Treatment and Tillage on Soil Moisture and Yield of Corn Zea Mays L written by Richard Stephen Malek and published by . This book was released on 1988 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Tillage January 1991 December 1993 written by Jane Potter Gates and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tillage System and Planting Date Effects on Corn Zea Mays L and Soybean Glycine Max L Yield written by Mario Perez-Bidegain and published by . This book was released on 2004 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although tillage systems produce different soil conditions, which result in different ideal planting dates, and crops respond to planting date, most of tillage research is conducted based on a calendar date. If a tillage system by planting date interaction exists, most of the planting date recommendations based on calendar date research could change. Different authors have modified surface residue distribution in an attempt to achieve optimal soil conditions for crop growth in the row zone while maintaining optimum soil conservation conditions in the mulched interrow zone. A reasonable goal for soil management involves identifying the level of soil and residue disturbance necessary to optimize soil environmental conditions for the corn plant and residue cover for soil conservation. In order to design a tillage system that produces a residue-free band-width based on site-specific soil properties and crop needs, the use of a model to capture the effect of surface residue management, soil non-uniformities (i.e., row zone tillage), and tillage is necessary. Considering a potential tillage by planting date interaction and site-specific strip tillage opportunities, this thesis has the following objectives. The first objective is to test the performance of strip tillage, no tillage, and conventional tillage when each system is planted on the day that optimum soil temperature and water conditions for planting are reached for each system. The second objective is to conduct a soil temperature sensitivity analysis to residue-free band-width, and tillage depth with strip tillage using a model that couples water and heat transport in non-uniform soils. In a two-year study on a poorly drained soil tillage system, effects on corn yield were not detected when preestablished soil temperature and water content criteria were used to determine the day of planting each system. On the other hand, planting date has an effect on corn yield. A tillage system by planting date interaction was detected for soybean yield in one of two years, when drought conditions existed during the second half of July and August. Soil temperature, soil water content, and matric potential were most sensitive to changes in residue-free band-width at 0.05-m in both soils studied.