Author: United States. Agricultural Research Service. Agricultural Engineering Research DivisionPublisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
You Can Store Grain Safely on the Farm. (Rev.1960).
Author: United States. Agricultural Research Service. Agricultural Engineering Research DivisionPublisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
You Can Store Grain Safely on the Farm
Author: You can store grain safely on the farm
Author: You Can Store Grain Safely on the Farm
Author: United States. Department of AgriculturePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Checklist of Major United States Government Series
Author: Guide to U.S. Government Publications
Author: John L. AndriotPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 936
Book Description
Checklist of Major U.S. Government Series
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 442
Book Description
Farmers' Bulletin
Author: United States. Department of AgriculturePublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 722
Book Description
Toward Sustainable Agricultural Systems in the 21st Century
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309148960
Category : Technology & Engineering
Languages : en
Pages : 598
Book Description
In the last 20 years, there has been a remarkable emergence of innovations and technological advances that are generating promising changes and opportunities for sustainable agriculture, yet at the same time the agricultural sector worldwide faces numerous daunting challenges. Not only is the agricultural sector expected to produce adequate food, fiber, and feed, and contribute to biofuels to meet the needs of a rising global population, it is expected to do so under increasingly scarce natural resources and climate change. Growing awareness of the unintended impacts associated with some agricultural production practices has led to heightened societal expectations for improved environmental, community, labor, and animal welfare standards in agriculture. Toward Sustainable Agricultural Systems in the 21st Century assesses the scientific evidence for the strengths and weaknesses of different production, marketing, and policy approaches for improving and reducing the costs and unintended consequences of agricultural production. It discusses the principles underlying farming systems and practices that could improve the sustainability. It also explores how those lessons learned could be applied to agriculture in different regional and international settings, with an emphasis on sub-Saharan Africa. By focusing on a systems approach to improving the sustainability of U.S. agriculture, this book can have a profound impact on the development and implementation of sustainable farming systems. Toward Sustainable Agricultural Systems in the 21st Century serves as a valuable resource for policy makers, farmers, experts in food production and agribusiness, and federal regulatory agencies.
Experimental and Quasi-Experimental Designs for Research
Author: Donald T. CampbellPublisher: Ravenio Books
ISBN:
Category : Psychology
Languages : en
Pages : 172
Book Description
We shall examine the validity of 16 experimental designs against 12 common threats to valid inference. By experiment we refer to that portion of research in which variables are manipulated and their effects upon other variables observed. It is well to distinguish the particular role of this chapter. It is not a chapter on experimental design in the Fisher (1925, 1935) tradition, in which an experimenter having complete mastery can schedule treatments and measurements for optimal statistical efficiency, with complexity of design emerging only from that goal of efficiency. Insofar as the designs discussed in the present chapter become complex, it is because of the intransigency of the environment: because, that is, of the experimenter’s lack of complete control.