the main purpose of this research was to investigate farmer’s attitude towards privatization of agricultural extension in shirgah district , mazandaran province. the statistical population consisted of 15300 farmers who inhabited as residents in 54 villages. using stratified proportional random sampling, 150 farmers (through cochran formula) were selected. the study revealed that 84% of farmers...

effectiveness and success of agricultural advisory services companies happen by continuing studies on the problems and then, eliminating them. the purpose of this research was to study problems of agricultural engineering and technical advisory services companies. the statistical population of this study included administrators of agricultural engineering and technical advisory services compani...

This Distributed Graduate Seminar (DGS) aims to synthesize current ecological information on the role that biodiversity in agricultural landscapes (agrobiodiversity) plays in providing ecosystem services. In recent years numerous studies aimed at examining the importance of agroecosystems to the conservation of biodiversity have been published. These studies focus on identifying the types of ag...

This Distributed Graduate Seminar (DGS) aims to synthesize current ecological information on the role that biodiversity in agricultural landscapes (agrobiodiversity) plays in providing ecosystem services. In recent years numerous studies aimed at examining the importance of agroecosystems to the conservation of biodiversity have been published. These studies focus on identifying the types of ag...

Due to the growing complexity of agricultural services the structured development and management of those services becomes more and more important. The following article shows how the concepts and methods of service engineering can be applied to the agricultural domain using nutrient mapping as an exemplary precision farming service.

> Agricultural biodiversity is used by rural communities worldwide in many time-tested practices that can confer increased resilience to farms, communities and landscapes. Using it more effectively and more sustainably can help to maintain and increase the flow of services and benefits agricultural biodiversity provides to communities. Using biodiversity to provide multiple services in sustaina...

BACKGROUND AND AIMS Crop pollination by bees and other animals is an essential ecosystem service. Ensuring the maintenance of the service requires a full understanding of the contributions of landscape elements to pollinator populations and crop pollination. Here, the first quantitative model that predicts pollinator abundance on a landscape is described and tested. METHODS Using information ...

Land provides a host of ecosystem services, of which the provisioning services are often considered paramount. As the demand for agricultural products multiplies, other ecosystem services are being degraded or lost entirely. Finding a sustainable trade-off between food production and one or more of other ecosystem services, given the variety of stakeholders, is a matter of optimizing land use i...