Impact of Continuous Manuring and Fertilization on Changes in Soil Quality under Sorghum-Wheat Sequence on a Vertisols

Influence of Integrated Nutrient Management Strategies on Soil Fertility

“…Ahmad et al, (2018) reported that application of recommended dose of fertilizers + PSB + Rhizobium + FYM @ 3 t ha -1 + Harit-Varden @ 5 t ha -1 recorded significantly build up of available N content over RDF alone. Improvement in the availability of soil N with the conjoint use of organic and inorganic fertilizer was also reported by Jadhao et al, 2019. Conjoint use of chemical fertilizers along with FYM increased the available N status (317 kg ha -1 ).…”

“…Kundu et al, 2016 reported that long term manure application along with chemical fertilizers led to significant higher values of soil available potassium. Improvement in available K status of soil with the integrated use of organics and inorganics fertilizers was also reported by Jadhao et al, 2019. The increase in the status of available K with the combined use of organic and inorganic fertilizer at compared to even optimal or super optimal dose of NPK may be due to the addition organic minerals which supplies nutrient to the soil (Verma and Ram, 1994). Highest amount of available K in the FYM treated plots may be due to the fact FYM addition could increase the CEC of soil, which is responsible for holding more amount of exchangeable K and helped in the release of exchangeable K from non-exchangeable K pool (Kher and Minhas, 1991).…”

“…Organic carbon content of soil after harvest of pearl millet increased significantly with 100% RDF + Azotobacter + PSB or 50% RDF + 5 t FYM + Azotobacter + PSB significantly Jakhar et al, (2018). Jadhao et al, (2019) also reported an improvement in the organic carbon status of the soil with conjoint use of organics and fertilizers. Ravankar et al, (2005) reported that the maximum amount of organic carbon was found in the plot receiving inorganic fertilizers in combination with organics.…”

“…Integrated use of recommended level of NPK to pearl millet and mustard with organic manure and bio fertilizers improved the soil status of P by 26.3 kg ha -1 over the initial value (Tomar et al, 2018). Jadhao et al, (2019) also opined that the availability of phosphorus was improved with conjoint use of organic and fertilizer. The application of NPK along with FYM maintained P reserve fairly at high level which was 77.8% more optimal NPK.…”

“…The application of NPK along with FYM maintained P reserve fairly at high level which was 77.8% more optimal NPK. The FYM could have solubilised the native P in the soil through the release of various organic acid (Jadhao et al, 2019). It has been noticed that in calcareous soil CO 2 production play a dominant role in enhancing the P availability (Singh and Wanjari, 2007).…”