Organic Crop Improvement Association was created in 1985.

the major group of activities for improving crop yields can be classified as :

.crop variety improvement

.crop production improvement

.crop protection management

Radioisotopes are used in crop management and improvement because they can be used to preserve. They are used to develop new strains of crop, also.

the methods of the crop improvement and crop protection managemant and crop prodution management

Mohammad Saghir Khan has written:

'Phosphate solubilising microbes for crop improvement'

'Phosphate solubilizing microbes for crop improvement' -- subject(s): Soil microbiology, Solubility, Crop improvement, Phosphates