soil organic carbon is a key factor in productivity and quality of soil and environment particularly in semi arid regions. in this article, the role of farm soil organic matter management in soil and in land is discussed. the variability of soil organic carbon in drylands is mainly controlled by tillage and crop residue management. results of this study indicated that usage of correct tillage m...

salinity and flooding are as two very important factors of soil degradation. they often occur together and cancause severe damage to plants. however, plant response to environmental stresses may vary with growth stage atwhich exposure occurs. a pot study was conducted in 2005-2006 in northern aq qala (northern iran) to studycombine effects of waterlogging and soil salinity at different growth s...

abstract over the last fifty years, most of the semi-arid rangeland in iran has been converted to cropland without an equivalent reduction in grazing animals. this shift has led to heavy grazing pressure on rangeland vegetation. the present study has been conducted in sisab research station in the north khorasan province to evaluate effects of long-term grazing exclosures on biodiversity of ran...

Rainfed farming is a dominant agricultural system in Tigray, Ethiopia. However, rainfall characterized by short duration, intense and erratic subjected to late-onset early cessation, suggesting pressing need for Supplemental Irrigation (SI) fill the crop water demand. Understanding effects of SI during late-onset, or both, along with their underlying causes, critical knowledge gap globally. Alt...

Biomass is a key variable for crop monitoring and assessing carbon stocks bioenergy potential. This study aimed to develop an allometric model predicting the dry leaf biomass of sisal, agave plant with crassulacean acid metabolism grown fibre production in tropics subtropics whose can be utilised as feedstock produce biogas through anaerobic digestion. The was used estimate productivity across ...