in order to study the weed populations in wheat, under different crop rotations an experiment was carried out at agricultural research station of jolgeh rokh, iran. during growing season this project was done in five years, based on randomized complete bloch design with three replications, on crop rotations included: wheat monoculture for the whole period (wwwww), wheat- wheat- wheat- canola- w...

Continuous cultivation of rice–wheat cropping system (RWCS) in Indo-Gangetic Plains India is showing declining factor productivity coupled with many environmental problems. Diversifying the RWCS one friendly options for sustaining food production. Four crop rotations involving maize and sorghum summer, wheat/potato/mustard winter followed by short duration mung bean late spring were studied to ...

Weaned bison bull calves were randomly assigned to four feedlot diets in a 4 treatment by 4 periods Latin square study. The feeding periods were 80 days long during spring, summer, fall, and winter. The four dietary treatments were identified based on major ingredients in each ration: 1) wheat screenings, 2) wheat middlings, 3) crambe meal, and 4) a commercial bison ration. Winter gains were lo...

Huang-Huai-Hai Plain is the most important region for grain production in China. In this area, long-term rotary tillage winter wheat and no summer maize have significantly increased soil bulk density, which impede root growth reduce yield. Subsoiling an effective practice to improve properties crop growth. The objective of study was investigate integrated effects subsoiling both seasons on spat...

Requirements for mitigation of the continued increase in greenhouse gas (GHG) emissions are much needed for the North China Plain (NCP). We conducted a meta-analysis of 76 published studies of 24 sites in the NCP to examine the effects of natural conditions and farming practices on GHG emissions in that region. We found that N2O was the main component of the area-scaled total GHG balance, and t...

Winter wheat and summer maize rotation is the main cropping pattern in North China Plain (NCP). There are still problems with farmers’ production modes, including shallow tillage layers, single application of chemical fertilizer causing plow bottom layer thickening soil pH decrease. A two-factor location experiment was conducted to investigate effects different fertilization patterns on physica...

Biogas slurry is a potential sustainable substitute for chemical fertilizers and soil amendment to restore organic matter depletion structural deterioration. The effects of substituting biogas fertilizer on lime concretion in the North China Plain were investigated. A field experiment examined consequences applying different proportions (0, 25, 50, 75 100%) slurry, while maintaining same total ...

The bioavailability and fractionation of Cu reflect its deliverability in soil. Little research has investigated Cu supply to crops in soil under long-term rotation and fertilisation on the Loess Plateau. A field experiment was conducted in randomized complete block design to determine the bioavailability and distribution of Cu fractions in a Heilu soil (Calcaric Regosol) after 18 years of rota...

This study was aimed at evaluating the effect of crop rotation and various tillage systems onthe chemical and biological properties of soil in the years 2013-2015. The first order factorincluded cropping systems: a) crop rotation (pea – winter wheat – spring wheat) and b)monoculture of winter wheat, whereas the second order factor were tillage systems:1) conventional (CT), 2) reduced (RT) and 3...

Within the Oltenia surface mining region of Romania, 14,890 ha have been disturbed and only 1,002 ha have been reclaimed. The majority of this disturbance has involved agricultural land (12,208 ha), of which only a small amount has been reclaimed (552 ha). Forest land disturbed by surface mining in this region amounted to 2,682 ha, of which only 450 ha have been reclaimed. Therefore, huge land ...