objective: soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure. so, this research has been done for achieving this purpose. methods: this...

soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure.so, this research has been done for achieving this purpose. this area is arounding sa...

The purpose of this research was identifying socio-economic characteristics affected on respondents’ participation in contract farming. The survey was conducted using structured questionnaire in populous states namely Kedah, Kelantan, Terengganu, Pahang, Perak, Selangor and Johor in Peninsular Malaysia. A total of one-hundred and sixty seven FFV farmers were randomly selected and personally int...

Land use change as the most important destructive factor in natural ecosystems is a globally problem that changes soil properties. Therefore, correct management and recognition of change aspects on each component of the ecosystem is necessary. This process causes land destruction, ecosystem instability, soil erosion, and more biological threats. Due to increasing land use conversion from rangel...

This study aims to identify the landscape ecological determinants related to Oncomelania hupensis distribution, map the potential high risk of O. hupensis habitats at the microscale, and assess the effects of two environmental control strategies. Sampling was performed on 242 snail sites and 726 non-snail sites throughout Qianjiang City, Hubei Province, China. An integrated approach of landscap...

This paper develops a model to understand the mechanism that might explain how land rights security may facilitate labor specialization. The theoretical framework suggests that with secured land rights, households with high farming ability are likely to invest in land while households with low farming ability tend to investment in human capital and migrate. Land security is identified as whethe...

i Summary/Zusammenfassung ii Summary Evaluation of dual purpose cowpea varieties for dry season feeding of ruminant animals Cowpea is of major importance to the livelihoods of millions of people in the tropics. Resource-poor smallholder farmers derive food, animal feed, cash and manure from the crop. Dual purpose cowpea has the potential to function as a key integrating factor in intensifying s...

in this study, total factor productivity growth of iran’s pulses (including irrigated pea, dry pea, irrigated lentil, dry lentil, irrigated soybean, dry soybean and irrigated bean) during of farming years 1989-1990 though 2007-2008 had been analyzed, using nonparametric malmquist approach. so, amounts of inputs usages include seeds, fertilizers, dung, poison, herbicide, labor, water and acreage...