Author: Welhelmus Isak Imanuel MellaPublisher:
ISBN:
Category : Conservation tillage
Languages : en
Pages : 158
Book Description
Effects of Conservation Tillage and Conventional Tillage on Selected Physical and Chemical Properties of a Blackland Praire Soil in Texas
Author: Welhelmus Isak Imanuel MellaPublisher:
ISBN:
Category : Conservation tillage
Languages : en
Pages : 158
Book Description
Masters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: 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.
Effects Conservation Tillage On Ground Water Quality
Author: Terry J LoganPublisher: CRC Press
ISBN: 1351088521
Category : Technology & Engineering
Languages : en
Pages : 399
Book Description
Nowadays the environmental sustainability of the cropping systems is increasingly requested by the consumers. Conventional tillage practices, totally turning over the soil between the vineyard rows, may cause erosion due to rain as well as structure destruction of the soil in the long term. Conservation tillage is a soil management technique, poorly widespread in Sardinia, allowing cover cropping between vineyard rows. Furthermore, this technique makes the canopy development control of herbage possible by cutting it up during specific phenological phases. Conservation tillage usually involves direct benefits to farmers such as increasing soil fertility as well as reductionof tillage costs, soil erosion and carbon dioxide (CO2) emissions in the atmosphere. This long term trial, during at least five years aims to assess the conservation tillage impact on chemical-physical soil characteristics in comparison with traditional tillage by evaluating the change of organic matter, C.E.C. and availability of major plant nutrients in the soil and to estimate their probable rise. The field plots are located in a 35% slope condition vineyard, showing massive erosion problem and organic matter low content. A split/plot design with four replications was set up, with the comparison between conservation and traditional tillage apart as main plots. Moreover, the effects of two different irrigation levels were evaluated in the subplots of each main plot. At the beginning of the trial (2011) a pedological survey was made. Three soil profiles were described and sampled along the field slope and soil sampling in each plot were made both to characterize the soil and to find the zero point. The soil chemical and physical characteristics were monitored through a second soil sampling made at the end of 2013. Conservation tillage caused increasing organic matter content and C.E.C. values. As for major plant nutrients in soil, results were more uncertain. Grapevine yield and quality parameters did not show any negative effect when passing from conventional to conservation tillage techniques. The trial provided a preliminary positive evaluation of conservation tillage. However, more years are required to confirm this trend.
Masters Theses in the Pure and Applied Sciences
Author: W. H. ShaferPublisher: 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
Agronomy News
Author: Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 832
Book Description
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.
Tillage Effects on Selected Soil Physical Properties
Author: Robert Lee HillMaster's Theses Directories
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 688
Book Description
Effects of Different Tillage Methods on Selected Soil Physical and Chemical Properties and Their Imapct on Nitrification
Author: Rebecca S. RussellThe Effects of Various Tillage Systems on Selected Soil Physical Properties and Cotton Plant Response
Author: Larry Roger BrooksConservation Tillage in Texas
Author: F. M. HonsPublisher:
ISBN:
Category : Conservation tillage
Languages : en
Pages : 84
Book Description
Soil and climatic variaton in Texas; Water management with conservation tillage; Conservation tillage effects on soil physical properties; Nitrogen requirements of conservation tillage systems; Weed control in conservation tillage systems; Planter and drill requirements for soils with surface residues; An economic assessment of conservation tillage in Texas.