A study in India looked at how using crop residues and a fungus called Trichoderma can affect the growth and yields of rice-wheat and sugarcane-ratoon-wheat crops. They found that recycling crop residues along with Trichoderma led to higher nitrogen levels in the soil and better crop yields. Wheat grown after sugarcane had more dry matter than wheat after rice. The sugarcane-ratoon-wheat system produced higher yields than the rice-wheat system. Burning or removing crop residues resulted in lower yields. Overall, using crop residues and Trichoderma together was most beneficial for the sugarcane-ratoon-wheat system.