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The experiment was conducted by Krishi Vigyan Kendra, Jajpur in collaboration with IFFCO, Jajpur in the farmer , s field of village Dihakuransa, Block Rasulpur of Jajpur District of Odisha to study the effect of Nano fertilizers on growth, yield and economics of Tomato variety Arka Rakshak in Rabi season 2019. The experiment was laid out in randomized block design (RBD) five treatments and five replications. Treatments involved were T1 Farmers Practice (FP) ( 100% NPK + 100 % Zn application ), T2 FP (50% N+100% PK+100% Zn ) + two sprays of Nano N , T3 – FP (100 % NPK + 50 % Zn ) + two sprays of Nano Zinc, T4 – FP (100% NPK + 100% Zn) + two sprays of Nano Cu) , T5 FP ( 50 % N + 100 % PK + 50 % Zn ) + 1 st spray Nano N + 2 nd spray Nano Zn + 3 rd spray Nano Cu @ 4ml / lit water each. First spraying was done 20 days after transplanting, 2 nd spraying at 15 days after 1 st spraying and 3 rd spraying was done 10days after 2 nd spraying. From the experiment it was observed that application of T5 produced maximum plant height (122.45cm), No. of branches per plant (12.4), fruit length (7.15cm), fruit girth (5.32cm), maximum number of fruits per plant (64.03), individual fruit weight (66.48g) and highest Yield per ha. (425.24q) followed by T2 (414.32 q/ha), T3 (409.28 q/ha) and T4 (407.42 q/ha). Lowest yield was found in T1 (398.20 q/ha) where RDF was 175:150:175 kg NPK per ha. Application of T5 ie. FP (50 % N + 100 % PK + 50 % Zn) + 1 st spray Nano N + 2 nd spray Nano Zn + 3 rd spray Nano Cu recorded highest gross income of Rs 2,12,620 / ha with net return Rs 1,59,720 / ha and maximum benefit cost ratio 4.01. NNitrogen, PPhosphorus, KPotash, ZnZinc, Cu-Copper.

Effect of Nano Fertilizers on Growth, Yield and Economics of Tomato Variety Arka Rakshak