Effect of sowing dates on yield and oil yield of new genotype of canola (Brassica napus L.)

摘要

Sustainable agriculture is a way of raising food that is healthy for consumers and animals, does not harm the environment, is humane for workers, respects animals, provides a fair wage to the farmer, supports and enhances rural communities. One of new topics in sustainable agriculture for soil resource management is about soil microorganisms and beneficial symbiotic relations among ecosystem components in food chains. Today, soil biotechnology could produce biofertilizars in addition to beneficial soil microorganism for removing toxin and other soil pollutants, plant residual decomposition, improvement of physical soil structure and enhancement of plant protection. It is commonly proposed that microorganisms may, therefore, play an important role in the development of integrated and sustainable production systems to improve phosphorous (P) use efficiently through use of specific inoculants. Phosphorus solubilization is carried out by a large number of saprophytic bacteria and fungi acting on sparingly soluble soil phosphates, mainly by chelation-mediated mechanisms. According to high amount of P in soil, using of phosphate, solubiling microorganisms (PSM) for solobilizng of consolable forms of phosphate is necessary. The main mechanism of PSM, is production of organic acids by sugar oxidation. This process reduces pH and increase P solubilization. This paper aimed to review role of phosphate solobilaizer microorganism (PSM) in sustainable agriculture.