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Soil Water And Nitrogen Availability To Corn In Relation To Root Distribution As Affected By Tillage Depth
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Book Synopsis Soil Water and Nitrogen Availability to Corn in Relation to Root Distribution as Affected by Tillage Depth by : Bernadette F. Quirol
Download or read book Soil Water and Nitrogen Availability to Corn in Relation to Root Distribution as Affected by Tillage Depth written by Bernadette F. Quirol and published by . This book was released on 1985 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pattern of corn root distribution and the availability of soil water and nitrogen to corn under three tillage depth treatments were investigated in Lipa clay soil with a traffic pan of about 17 cm thick situated 8 cm below the soil surface. The tillage treatments employed included the conventional disc plowing to 15 cm depth, zero tillage, and subsoiling to a depth of 30 cm. Conventional properties of the cultivated zone, reducing bulk density and penetrometer resistance while increasing saturated hydraulic conductivity, drainage porosity and amount of available water. As a consequence, conventional and deep tillage promoted early deep root penetration within and beyond the otherwise compacted soil layer (15-30 cm) However, deep tillage produced more fine and well-proliferating root systems with presumably greater total root surface area deep in the soil profile. This enhanced significantly greater water and nitrogen utilization in the deeper soil horizons od deep-tilled soil. The comaratively better plant-water relations and nitrogen nutrition provided by deep tillage to corn plants resulted in the production of more dry matter, heavier and fully-filled grains to effect a yield increase of about 15% and 26% relative ot the conventional and zero tillage treatments. Grain yield in the zero, conventional and deep tillage treatments were 2.45, 2/70 and 3.11 tons/ha, respectively.
Book Synopsis Effects of Tillage and Nitrogen Fertilization on Nitrogen Losses from Soils Used for Corn Production by :
Download or read book Effects of Tillage and Nitrogen Fertilization on Nitrogen Losses from Soils Used for Corn Production written by and published by . This book was released on 1990 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Tillage on Soil Physical Properties and the Availability of Nitrogen, Phosphorus and Potassium to Corn (Zea Mays L.) by : John Frazeur Moncrief
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:
Book Synopsis Effects of Tillage, Nitrogen Source and Nitrogen Rate on Corn Response and Selective Soil Properties in a Corn-soybean Rotation by : David Kwaw-Mensah
Download or read book Effects of Tillage, Nitrogen Source and Nitrogen Rate on Corn Response and Selective Soil Properties in a Corn-soybean Rotation written by David Kwaw-Mensah and published by . This book was released on 2005 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn producers in Iowa adopt no-tillage (NT), strip-tillage (ST) or chisel plow (CP) and either commercial fertilizer or liquid swine manure produce corn. The rising cost of commercial N fertilizers raises concerns about using alternative and viable sources of N and P for corn production. The objectives of this study were to evaluate 1) the responses of corn to three tillage treatments (NT, ST and CP) and four N rates (0, 84, 168 and 252 kg N ha−1) of liquid either liquid swine manure or commercial fertilizer N and 2) the effects of tillage on soil temperature, compaction, moisture storage and water extraction by corn root system. The study was conducted at the Northeast Research and Demonstration Farm of Iowa State University near Nashua. The soil at the study site is Kenyon (fine loamy, mixed mesic Typic Hapludolls) soil. The experimental design was a randomized complete block with split-plot arrangement in three replications. The tillage treatments were randomly assigned to each replication as main plots and the N rates of either N source as the subplot. Results of the study showed no significant impact of tillage treatments on plant biomass and corn yield. Increasing soil N application increased corn yield and corn stalk NO3-N concentrations for both N sources. At N rates higher than 100 kg N ha−1, corn showed a luxury consumption of N for both N sources. Soil temperature in the ST treatment compared favorably with CP, but showed an overall advantage over NT, which consistently recorded lower soil temperatures and ERI. Soil moisture storage for all tillage treatments at the top 30 cm and 0 to 120 cm were not significantly different for both N sources. Soil water extraction by corn roots did not show significant differences for all tillage treatments and both N sources. Soil penetration resistance measurements for tillage treatments did not show significant differences but increased with soil depth especially in the top 20-cm soil depth and late in the growing season for both N sources.
Download or read book Information Circular written by and published by . This book was released on with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Characterization and Soil Amendment Use on Coal Surface Mine Lands by : Michael R. Norland
Download or read book Soil Characterization and Soil Amendment Use on Coal Surface Mine Lands written by Michael R. Norland and published by . This book was released on 1991 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conservation Tillage Effects on Soil Compaction and Corn Root Growth by : Ruth E. Hilfiker
Download or read book Conservation Tillage Effects on Soil Compaction and Corn Root Growth written by Ruth E. Hilfiker and published by . This book was released on 1986 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Distribution of Cover Crop Nitrogen Retained by Soil Aggregates Within a Rye-corn Agroecosystem by : Yasemin Kavdir
Download or read book Distribution of Cover Crop Nitrogen Retained by Soil Aggregates Within a Rye-corn Agroecosystem written by Yasemin Kavdir and published by . This book was released on 2000 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corn Growth and Yield Under Different Tillage, Rotation, and Management Systems by : Jeremy W. Singer
Download or read book Corn Growth and Yield Under Different Tillage, Rotation, and Management Systems written by Jeremy W. Singer and published by . This book was released on 1996 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maize Agroecosystem by : K. R. Krishna
Download or read book Maize Agroecosystem written by K. R. Krishna and published by CRC Press. This book was released on 2012-07-19 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize is among the most widely spread and widely used crops of the world, used for cereals for over 4 billion humans, as food for farm animals, and as a source material for biofuel production. Yet there are relatively few books on the cropping system of this important crop. This book, Maize Agroecosystem, is a concise treatise dealing with agronomy, soil fertility, and productivity of maize. The information is global in nature and considers recent developments in all maize cropping belts. The "global maize agroecosystem" is a conglomerate of several "maize cropping belts" that flourish on different continents. The impact of nutrient management on the productivity of maize agroecosystems is the main focus of this book. The book includes the history of maize growing, the kinds of soil needed, nutrient dynamics, the use of soil organic matter, the physiology and genetics of maize, and integrated nutrient management. It presents comprehensive knowledge regarding the physicochemical dynamics of the three major nutrients: nitrogen, phosphorus, and potassium. Also covered is how fertilizers impinge on soils of maize farms and their impact on soil and groundwater quality. The impact of crop genotype on soil nutrient dynamics and productivity is also highlighted. The information provided here will be highly useful to students at colleges and universities in the fields of agricultural sciences and environmental science and ecology, and the book also functions as valuable resource for researchers and professors in crop science. Several figures and tables are included that describe and summarize the impact of various agronomic/fertilizer management procedures on crop productivity.
Book Synopsis COMPARISON OF TILLAGE AND NO-TILLAGE MANAGEMENT SYSTEMS AS RELATED TO SELECTED AGRONOMIC FACTORS AFFECTING CORN (ZEA MAYS L.) YIELDS by : Amores Freddy M.
Download or read book COMPARISON OF TILLAGE AND NO-TILLAGE MANAGEMENT SYSTEMS AS RELATED TO SELECTED AGRONOMIC FACTORS AFFECTING CORN (ZEA MAYS L.) YIELDS written by Amores Freddy M. and published by INIAP Archivo Historico. This book was released on 1982 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Agriculture with Subject Index by :
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1987-10 with total page 1238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Health and Intensification of Agroecosystems by : Mahdi M. Al-Kaisi
Download or read book Soil Health and Intensification of Agroecosystems written by Mahdi M. Al-Kaisi and published by Academic Press. This book was released on 2017-03-15 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Health and Intensification of Agroecosystems examines the climate, environmental, and human effects on agroecosystems and how the existing paradigms must be revised in order to establish sustainable production. The increased demand for food and fuel exerts tremendous stress on all aspects of natural resources and the environment to satisfy an ever increasing world population, which includes the use of agriculture products for energy and other uses in addition to human and animal food. The book presents options for ecological systems that mimic the natural diversity of the ecosystem and can have significant effect as the world faces a rapidly changing and volatile climate. The book explores the introduction of sustainable agroecosystems that promote biodiversity, sustain soil health, and enhance food production as ways to help mitigate some of these adverse effects. New agroecosystems will help define a resilient system that can potentially absorb some of the extreme shifts in climate. Changing the existing cropping system paradigm to utilize natural system attributes by promoting biodiversity within production agricultural systems, such as the integration of polycultures, will also enhance ecological resiliency and will likely increase carbon sequestration. Focuses on the intensification and integration of agroecosystem and soil resiliency by presenting suggested modifications of the current cropping system paradigm Examines climate, environment, and human effects on agroecosystems Explores in depth the wide range of intercalated soil and plant interactions as they influence soil sustainability and, in particular, soil quality Presents options for ecological systems that mimic the natural diversity of the ecosystem and can have significant effect as the world faces a rapidly changing and volatile climate
Book Synopsis Conservation Tillage Effects on Soil Properties and Corn Yields in Central Michigan by : Michael James Staton
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 Plant Roots written by Peter J. Gregory and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: The root system is a vital part of the plant and therefore understanding roots and their functioning is key to agricultural, plant and soil scientists. In Plant Roots Professor Peter Gregory brings together recent developments in techniques and an improved understanding of plant and soil interactions to present a comprehensive look at this important relationship, covering: Root response to, and modification of, soils Genetic control of roots’ responses to the environment Use of modern techniques in imaging, molecular biology and analytical chemistry Practical exploitation of root characters This book will be a vital tool for plant, crop, soil and agricultural scientists, plant physiologists, environmental scientists, ecologists and hydrologists. It will be a valuable addition to libraries in universities, agricultural colleges and research establishments where these subjects are studied and taught.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1972 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
