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 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 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 Tillage induced Changes in Physical Properties of a Clay Loam and Corn Growth After Conversion from Alfalfa written by Udaya Karunatilake and published by . This book was released on 1996 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Proceedings written by and published by . This book was released on 1982 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tillage accomplishments and potencial; Effects of tillage on soil physical propreties ans processes; Examples of prediction of tillage effects on soil properties and processes; Predicting tillage effects on infiltration; Predicting tillage effects on evaporation from the soil; Modeling tillage effects on soil temperature; Modeling soil mechanical behavior during tillage; Application of precditions of soil physical properties and processes to prediction of crop growth.
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 Effects of Tillage Practics on Soil Physical Properties and Nitrogen Dynamics in Maize Zea Mays L written by Sandhir Kumar and published by . This book was released on 2002 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tillage Effects on Selected Soil Physical Properties written by Robert Lee Hill and published by . This book was released on 1984 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tillage Effects on Soil Physical Properties and Process Proceeding written by P. W. Unger and published by . This book was released on 1982 with total page 198 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 Predicting Tillage Effects on Soil Physical Properties and Processes written by and published by . This book was released on 1982 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil and Tillage written by Siddig Mohamed Ali and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seedbed preparation has an important role in modifying the soil conditions especially with regard to its physical properties. It has been realized for many years that low productivity of land may be associated with unfavorable physical conditions for plant growth such as soil permeability, soil density, soil strength, soil compaction and water percolation and distribution. When the soil is in good physical conditions, the root system can grow extensively into the soil. An important factor which can cause a compacted layer is the continuous use of plows that provided the depth of plowing remains constant for a long time. Furthermore, the effect of the plow itself and the influence of tractor wheels may hasten compaction. As soil factors are considered to be the main factors causing fluctuation in cotton yield, attempts have been made to solve this problem by using tillage to improve soil physical properties and hence plant growth and yield. This book, therefore, provides information for agriculture engineers, farmers, researchers, soil science specialists and those have interest in increasing agricultural production and productivi
Download or read book Predicting Tillage Effects on Soil Physical Properties and Process written by American Society of agronomy and published by . This book was released on 1985 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop and Tillage Management Effects on Soil Physical Properties written by Annette Larue Hanson and published by . This book was released on 1984 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
