منابع مشابه
Production Risk in a Subsistence Agriculture
Purpose: In this article we illustrate the importance of understanding the risk profiles of new technologies, in addition to the changes in productivity, to be able to determine strategies for agricultural development. Design/methodology/approach: The analysis is based on data obtained from a 2002 survey of subsistence farmers in the Kilimanjaro region of Tanzania, and a Just and Pope (1978) fr...
متن کاملEconomies of Size in Production Agriculture
Economies of size refer to the ability of a farm to lower costs of production by increasing production. Agriculture production displays an L-shaped average cost curve where costs are lower initially but reach a point where no further gains are achieved. Spreading fixed costs, bulk purchases, and marketing power are cited as reasons for economies of size. Labor-reducing technologies may be the p...
متن کاملImpact of forest conversion to agriculture on carbon and nitrogen mineralization in subarctic Alaska
Land-use change is likely to be a major component of global change at high latitudes, potentially causing significant alterations in soil C and N cycling. We addressed the biogeochemical impacts of land-use change in fully replicated black spruce forests and agricultural fields of different ages (following deforestation) and under different management regimes in interior Alaska. Change from for...
متن کاملRegulated Production of Mineralization-competent Matrix Vesicles in Hypertrophic Chondrocytes
Matrix vesicles have a critical role in the initiation of mineral deposition in skeletal tissues, but the ways in which they exert this key function remain poorly understood. This issue is made even more intriguing by the fact that matrix vesicles are also present in nonmineralizing tissues. Thus, we tested the novel hypothesis that matrix vesicles produced and released by mineralizing cells ar...
متن کاملAn Ecological Approach to Production Agriculture
Row-crop agriculture is one of the most extensive and closely coupled natural– human systems and has extraordinary implications for human welfare and environmental well-being. The continued intensification of row-crop agriculture provides food for billions and, for at least the past 50 years, has slowed (but not stopped) the expansion of cropping onto lands valued for conservation and other env...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Agronomy
سال: 2012
ISSN: 1687-8159,1687-8167
DOI: 10.1155/2012/989365