3.3 Effect of use of organics on crop yield and SOC
Organics alone can maintain the soil health in a better manner as when
compared to inorganic alone and integrated inorganic and organics but
the yield was found comparatively lower. Several studies support that
organics addition to the soil improves its health as well as ensure food
security by managing yield as well as crop quality. Therefore, organics
was integrated with inorganic fertilizer termed as INM and was compared
with inorganic alone in rice and wheat crops (Sharma et al .,
2019) and the finding suggests that organics addition alongwith
inorganic fertilizer improves the rice and wheat yield in most of the
condition. The wheat yield was significantly increased in INM treatment
over the treatment inorganic alone by 4.5% whereas rice yield was
increased by 1.2% (Figure 5). The change in yields was 50 and 130 kg
ha-1, respectively in rice and wheat crop in INM
treatment over the synthetic fertilizer alone. SOC was with positive
effects when INM treatment was applied over the treatment inorganic
alone in both rice and wheat crops. The effect of SOC was significantly
increased in treatment INM in rice (23.2%) and in wheat (16.2%) in
comparison to treatment inorganic alone (Figure 5). This result directs
towards that organics addition improve SOC and ultimately enhance soil
quality/health. Improvement of soil health sustain better crop yield and
ensure food security.