An understanding of the nature of soils in natural and human influence ecosystems is essential if progress is to be made in the determination and monitoring of soil quality. This paper briefly discuss the changing circumstances which have resulted in the increased awareness of the importance of soil as a key component of both natural and human influenced environmental systems. These changed cir...

The goal of sustainable agriculture is to maintain a non-negative trend in productivity while maintaining soil quality. Our main objective was to determine the sustainability of organic cropping systems. Three of the selected farms were in organic production for three, six and nine years since certification, and a fourth in conventional production. We found significant relationships between som...

crop yields are dependent on a number of factors such as soil type, weather conditions and farming practices. crop yield estimates in different soil types are required to meet the needs of farmers, land appraisers, and governmental agencies in iran as around the world. this study was conducted to model the wheat-grain yields [triticum aestivum l.]  by soil properties in khoy area, the north-wes...

Understanding the effects of external organic and inorganic components on soil fertility and quality is essential for improving low-yielding soils. We conducted a field study over two consecutive rice growing seasons to investigate the effect of applying chemical fertilizer (NPK), NPK plus green manure (NPKG), NPK plus pig manure (NPKM), and NPK plus straw (NPKS) on the soil nutrient status, en...

Moso bamboo (Phyllostachys edulis) is one of the widely growing bamboo species in Asia. Because of its fast growth and aggressive rhizomes, it is reported to invade other forests and reduce the biodiversity of forest ecosystems. To determine the changes in soil nutrient conditions due to moso bamboo invasion, this research measured the difference in soil labile carbon (C) and nitrogen (N) conte...