Quality Parameters as Influenced by Different Integrated Nutrient Management of Rustica Tobacco (Nicotiana rustica L.) and Its Residual Impact on Succeeding Summer Green Gram (Vigna radiata L.)

The present research work entitled “Quality parameters as influenced by different integrated nutrient management of rustica tobacco (Nicotiana rustica L.) and its residual impact on succeeding summer green gram (Vigna radiata L.) ” a field experiment was conducted during rabi and summer season of years 2020-21 and 2021-22 at Bidi Tobacco Research Station, Anand Agricultural University, Anand, Gujarat. The experimental field had an even topography with a gentle slope having good drainage and sandy loam in texture. The soil of the experimental field at 0-15 cm depth was low in organic carbon and available nitrogen, medium in available phosphorus and potassium and slightly alkaline in reaction. The ten integrated nutrient management treatments viz., T1: 100% RDF (200-00-00 kg/ha), T2: 75% RDF + 25% N from FYM, T3: 75% RDF + 25% N from poultry manure, T4: 75% RDF + 25% N from castor cake, T5: 50% RDF + 50% N from FYM, T6: 50% RDF + 50% N from poultry manure, T7: 50% RDF + 50% N from castor cake, T8: 50% RDF + 25% N from FYM + Azotobacter, T9: 50% RDF + 25% N from poultry manure + Azotobacter, T10: 50% RDF + 25% N from castor cake + Azotobacter were tested in Randomized Block Design with four replications. Rustica tobacco variety GCT 3 was considered as main rabi crop and green gram variety GAM 5 was considered as summer residual crop. The experiment was conducted on the same site during both the years without changing randomization of treatments. Results of the experiment showed that quality parameters viz. nicotine content was found significant due to various integrated nutrient management during both the years (2020-21 and 2021-22) in pooled analysis, while reducing sugar and chloride content was found non-significant during both the years (2020-21 and 2021-22) but significant result was observed in pooled analysis due different integrated nutrient management in both quality parameters under application of 75% RDF + 25% N from poultry manure (T3). In case of residual summer green gram protein content in seed and protein yield exerted significant result due to various integrated nutrient management during the years 2021, 2022 and in pooled analysis under application of 50% RDF + 50% N from FYM (T5). Interaction effect (Y x T) was found non-significant on all the growth parameters during the experiment.