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Author: Jeremias Rodriguez
Publisher:
Published: 1993
Total Pages: 152
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1993
Total Pages: 870
ISBN-13:
DOWNLOAD EBOOKSept.-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.
Author: J.V. Singh
Publisher: Scientific Publishers
Published: 2010-02-01
Total Pages: 407
ISBN-13: 9386347598
DOWNLOAD EBOOKForage crops are important for the economy of our country as these crops provide major nutritional base in the livestock ration. The National Commission on Agriculture has also emphasized in its report that in order to achieve the so-called ‘White Revolution’ it will be necessary to provide required emphasis on research relating to the improvement and management of forages. India’s average availability of milk per head per day comes to only 100 ml as against our requirement of 220 ml per day. With the increase in world human population and economic growth, the demand for animal products such as milk, meat and eggs in the human diet is bound to increase. The success of dairy and poultry programmes will largely depend on the availability of required forages and feeds since almost 60-65% investment is invariably on these essential requirements. A recent estimate indicates that the deficiency in total forage need is about 40% of dry forage and about 24% of green fodder. This deficit is likely to increase further as (i) the area under forage crop is declining because of the pressing problems of growing cereals and other cash crops to meet the increasing pressure of population growth, (ii) the animal population is increasing every year by almost 2% (iii) cultivable land is decreasing due to urbanization and industrial growth and (iv) forages in future are going to have competition from liquid fuel shortage. Recent interests in the development of technology for the economic conversion of cellulosic material to liquid fuels, however, have given rise to estimates of several hundred million metric tons of lignocellulosic material being used annually for their new developments. With the development of these technologies, the impact on ruminants production would be substantial, so there is going to be a vital challenge to meet the requirement of forages in the near future.
Author: William L. Schultz
Publisher:
Published: 2010
Total Pages: 75
ISBN-13: 9781124010892
DOWNLOAD EBOOKThe primary objective of this study was to compare in situ and in vitro methods for determining rate and extent of legume forage digestion and the ruminal digestion kinetics of two novel forages. Rate and extent of digestion data from Rigidula medic (Medicago rigidula) and Austrian Winter Pea (Pisum sativum) were compared with data from alfalfa (Medicago sativa L.). Samples were subjected to in situ or in vitro for 3, 6, 9, 12, 15, 18, 24, 36, 48 and 96 h. Residues were analyzed for OM, NDF, and N. Estimates of OM digestibility were higher (P = 0.0001 to 0.007) for in situ at 3 through 48 h, and similar between techniques at 96 h (P = 0.08) for all three forage species. Ruminal NDF degradability at 3 through 48 h, was higher for in situ (P = 0.10 to 0.44), but similar at 96 h (P = 0.11) between techniques. Ruminal N digestibility was greater (P = 0.0001 to 0.02) for in situ than in vitro. Estimates of N Fractions A, B, and C did not differ (P = 0.32 to 0.94) for either technique. However, estimated N degradation rate was higher (P = 0.03) for in situ than in vitro, resulting in greater (P = 0.0001) estimated ruminally degradable protein of the forage for the in situ compared to the in vitro technique. Austrian Winter Pea, Fractions A (P = 0.22), and B (P = 0.25) was similar to that of alfalfa, with Fraction C being less in the AWP than alfalfa (P = 0.01). Austrian Winter Pea had higher levels of degraded N at 3, 6, 9, 12, 15, and 96 h (P = 0.008 to 0.03). Additionally, RDP is higher in AWP than alfalfa (P = 0.009), but the degradation rate between the two species was similar (P = 0.48). Fractions A (P = 0.22), and B (P = 0.25) in medic is similar to that of alfalfa, with Fraction C being less in the medic than alfalfa (P = 0.01). Medic had higher levels of degraded N at 3, 6, 9, 12, and 15 h, (P = 0.009 to 0.03) where N degradation levels were similar at 18, 24, 36, and 48 h (P = 0.06 to 0.20), and at 96 h degraded N was higher in alfalfa (P = 0.008). Estimates of forage digestibility differed depending on the technique employed, and in situ or in vitro forage digestibility should not be used interchangeably. Like alfalfa, medic is a high quality forage that can be grazed by sheep or other ruminant animal. However, AWP harvested at early maturity may lack enough lignin to initiate rumination of the ruminant animal.
Author: Cory Matthew
Publisher: MDPI
Published: 2018-03-16
Total Pages: 221
ISBN-13: 3038424889
DOWNLOAD EBOOKThis book is a printed edition of the Special Issue "Forage Plant Ecophysiology" that was published in Agriculture
Author: John L. Curtis
Publisher:
Published: 1996
Total Pages: 200
ISBN-13:
DOWNLOAD EBOOKAuthor: Andy Clark
Publisher: DIANE Publishing
Published: 2008-07
Total Pages: 248
ISBN-13: 1437903797
DOWNLOAD EBOOKCover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Author: Amitav Bhattacharya
Publisher: Academic Press
Published: 2019-06-14
Total Pages: 629
ISBN-13: 0128176059
DOWNLOAD EBOOKEffect of High Temperature on Crop Productivity and Metabolism of Macro Molecules presents a comprehensive overview on the direct effect of temperatures defined as "high", a definition which increasingly includes a great number of geographic regions. As temperature impacts the number of base growth days, it is necessary to adapt plant selection, strategize planting times, and understand the expected impact of adaptive steps to ensure maximum plant health and crop yield. Global warming, climate change and change in environmental conditions have become common phrases in nearly every scientific seminar, symposium and meeting, thus these changes in climatic patterns constrain normal growth and reproduction cycles. This book reviews the effect of high temperature on agricultural crop production and the effect of high temperature stress on the metabolic aspects of macro molecules, including carbohydrates, proteins, fats, secondary metabolites, and plant growth hormones. - Focuses on the effects of high temperature on agriculture and the metabolism of important macro-molecules - Discusses strategies for improving heat tolerance, thus educating plant and molecular breeders in their attempts to improve efficiencies and crop production - Provides information that can be applied today and in future research
Author: Antonio J. Márquez
Publisher: Springer Science & Business Media
Published: 2005-10-26
Total Pages: 416
ISBN-13: 9781402037344
DOWNLOAD EBOOKLegumes are very important plants playing a central role in biological research. They are a key component of sustainable agricultural systems because of symbiotic nitrogen fixation and other beneficial symbiosis with mycorrhizal fungi. Studies on most of the major leguminous crops are hampered by large genome sizes and other disadvantages which have hindered the isolation and characterisation of genes with important roles in legume biology and agriculture. For this reason Lotus japonicus was chosen as a model species for legume research some ten years ago. Since then, many groups around the world have adopted Lotus as a model and have developed numerous resources and protocols to facilitate basic and applied research on this species. This handbook represents the first effort to compile basic descriptions and methods for research in Lotus, including symbiotic processes, cell and molecular biology protocols, functional genomics, mutants, gene tagging and genetic analysis, transformation and reverse genetic analysis, primary and secondary metabolism, and an exhaustive update of the scientific literature available on this plant.
