A field experiment was conducted at the research farm of Indian Agricultural Research Institute, New Delhi during 3 wet and dry seasons of 2003-06 in rice-wheat cropping system. In this experiment different treatments comprising organic amendments such as blue green algae, vermicompost and farm yard manure applied alone or in combination were tested in organic crop production.

A field experiment was conducted on rice seed production in rice-wheat cropping system to find out the effect of application of biofertilizers and urea on the grain yield and quality attributes of rice varieties at the research farm of Indian Agricultural Research Institute, New Delhi, India during 2 wet seasons of 2006-08.