Author(s):
Harikesh, Akhtar Ali, Ghanshyam Singh, Sanjay Kumar, Shivam, Ravi Pratap Yadav, Ankit Tiwari, Ajit Kumar and Atul Yadav
Abstract:
The present investigation was conducted for two consecutive years with objective to know the various integrated nutrient management and rice varieties on soil chemical properties. The present study comprised six integrated nutrient modules
viz., F
0 (control), F
1 [RDF (120:60:60)], F
2 (50% RDF + 50% N through vermicompost), F
3 (75% RDF + 25% N through vermicompost), F
4 (50% RDF + 50% N through FYM) and F
5 (75% RDF + 25% N through FYM), two varieties (NDR-359 and Sarju-52) and plant geometry S
1 (20cm × 20cm) and S
2 (30cm × 30cm). The investigation revealed that the build up of neutral soil pH, reduction in EC and increasing OC were found in INM treatments in varieties and plant geometry as compared to sole inorganic fertilizer treatment (F
1) and maximum reduction in pH was observed with the application of F
2 (50% RDF + 50% N through vermicompost). Whereas, the maximum increase of organic carbon also recorded with the application of the treatment F
2. Varieties and plant geometry did not build up of pH, EC and organic carbon. The higher availability of nutrients N, P and K in soil after harvest was recorded in all the INM treatments as compared to inorganic fertiliser application treatments and control. Whereas, the maximum availability of N, P and K after crop harvest were estimated under the treatment having F
2 (50% RDF + 50% N through vermicompost), which was closely followed by F
4 and
F
3. Therefore, the maximum availability N, P and K were found in variety NDR-359
under plant geometry S
2 (30 cm × 30 cm) followed by Sarju-52and
S
1 (20 cm × 20 cm), respectively.
Harikesh, Akhtar Ali, Ghanshyam Singh, Sanjay Kumar, Shivam, Ravi Pratap Yadav, Ankit Tiwari, Ajit Kumar and Atul Yadav. Effect of integrated nutrient management and plant geometry on soil properties and availability of nutrients under SRI technique of rice. J Pharmacogn Phytochem 2017;6(5):86-89.