Excessive and unprincipled use of chemical fertilizers by reducing soil fertility and pollution of non-renewable resources, necessitates the revision of crop production methods to use more beneficial natural processes and biological fertilizers. Improper use of phosphorus fertilizers in recent years and the lack of availability and stabilization of this element in the clay colloids, has turned paddy fileds into a store of phosphorus storage. Therefore, to prevent this accumulation and upset the balance of nutrients, it seems necessary to provide new practical solutions such as the use of organic fertilizers and phosphate-soluble microorganisms in order to produce a healthy crop.
Therefore, the present study is being conducted to investigate the root characteristics and application of organic biofertilizer sources on soil phosphorus uptake and yield of Central and West Asian rice varieties. In the first year of this sutdy, 40 rice genotypes from Central and West Asia were cultivated in pots without applying any experimental treatments superior cultivars would be selected, screened and classified in terms of root characteristics.