Author(s):

Shani Raj, Dr. RK Bisen, Dr. SK Verma, Dr. HP Agrawal, Dr. NK Chaure and Shri V Nirmalkar

Abstract: The present investigation entitled “Effect of integrated nutrient management on growth and yield of potato (Solanum tuberosum L.)” was carried out in Horticulture Research cum Instructional Farm of Barrister Thakur Chhedilal College of Agriculture and Research Station, Sarkanda, Bilaspur (C.G.), during Rabi season of Nov 2018 to Mar 2019, The field experiment was laid out in randomized block design with 3 replications and 12 different treatment combinations viz. T1 (125% RDF (187:125:125 kg ha^-1 NPK), T2 (100% RDF (150:100:100 kg ha^-1 NPK), T3 (75% RDF + FYM @ 7.5 t ha^-1(25% N by FYM), T4 (50% RDF + FYM @ 15 t ha^-1(50% N by FYM), T5 (75% RDF + Vermicompost @ 3.75 t ha-¹ (25% N by Vermicompost), T6 (50% RDF + Vermicompost @ 7.5 t ha^-1 (50% N by Vermicompost), T7 (Tuber treatment with Trichoderma @ 20 g /k + soil incorporation of Trichoderma enriched FYM @ 15 t ha^-1 SOIL, T8 (Tuber treatment with Pseudomonas @ 20 g /k + soil incorporation of Pseudomonas enriched FYM @ 15 t ha^-1 soil, T9 (Tuber treatment with Pseudomonas followed by Trichoderma @ 20 g /k + soil incorporation of consortia of Pseudomonas & Trichoderma enriched FYM @ 15 t ha^-1 soil, T10 (Tuber treatment with consortia of Azotobacter & PSB @20 g /k + soil incorporation of consortia of Azotobacter & PSB enriched FYM @ 15 t ha^-1 soil, T11 (50% RDF only FYM @ 15 t ha^-1 (50% N by FYM) and T12 (Local control), T6 (50% RDF + Vermicompost @ 7.5 t ha^-1 (50% N by Vermicompost), Integrated use of synthetic fertilizers and organic manures showed the significant impact on growth and yield attributes of potato. has resulted in plant height plant height (44.13 cm), number of green leaves and number of shoots per plant (66.40 and 4.37 respectively), and crop growth rate (2.17g/m²/day,) fresh tuber weight per plant (145.67 g), and number of tuber late per plant (18.67), 70 & 90 DAS and at harvest, respectively) And most of the yield and yield attributing characters viz., number of tuber per plant (10.67) fresh tuber weight per plant (295.67 g) tuber girth (5.05 cm), marketable yield (25.99 t/ha), total tuber yield (27.36 t/ha) were observed significantly higher with the application of 50% RDF + Vermicompost @ 7.5 t ha^-1 (50% N by Vermicompost) apart from this the highest net income The highest net returns (Rs. 227218.94) and benefit cost ratio (B:C ratio) (2.03) were recorded with the treatment of T₁ (125% RDF (187:125:125 kg ha-1 NPK) and also followed by T₆- (50% RDF + Vermicompost @ 7.5 t ha^-1 (50% N by Vermicompost) (Rs. 224101.35) and benefit cost ratio (B:C ratio) (1.78) was also similar result.

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