Shadap, ArwankieBB S, PramodMailappa, A S2022-10-142022-10-142022-09-21https://krishikosh.egranth.ac.in/handle/1/5810188916The present investigation was carried out at the Naturally ventilated polyhouse, Department of Vegetable Science, Polyhouse complex, College of Horticulture and Forestry, CAU, Pasighat, Arunachal Pradesh during the year 2021-22. The experiment was laid out in Randomised Block Design with 11 treatments and replicated thrice.The treatment details of the present experiments were T1 (Control), T2 (RDF + Zinc sulphate (ZnSO4)@100ppm), T3 (RDF + Zinc sulphate (ZnSO4)@200ppm), T4 (RDF + Boric acid (H3BO3)@50ppm), T5 (RDF + Boric acid (H3BO3)@100ppm),T6 (RDF + Copper sulphate (CuSO4)@50ppm), T7 (RDF + Copper sulphate (CuSO4)@100ppm), T8 (RDF+ Magnesium sulphate (MgSO4)@50ppm), T9 (RDF + Magnesium sulphate (MgSO4)@100ppm), T¬10 (RDF + ZnSO4@200ppm + H3BO3@100ppm + CuSO4@100ppm + MgSO4@100ppm), T11 (RDF + TracelTM (Commercial micronutrient mixture) @5g/litre) which was sprayed at 30,60 and 90 DAT of hybrid cherry tomato under protected condition. The analysis of variance showed that there was significant difference among the foliar treatments of different concentration of micronutrients on growth, yield and quality parameters of cherry tomato. The experimental results revealed thatT11 (RDF+ TracelTM (Commercial micronutrient mixture) @5g/litre) exhibited maximum values for almost all of the parameters i.e., growth and yield parameters viz., plant height (2.03 m 2.79 m, 3.05 m at 60,90 and 120 DAT ), fruit weight (13.80 g), fruit length (24.65 mm), fruit girth (22.72 mm), no. of clusters/plant (21.56), no. of fruits/cluster (8.52), yield/plant (2.86 kg), yield per plot (28.56 kg) and yield per hectare (62.83 kg/ha) and it was at par with T¬10 for almost all parameters. Quality parameters viz. TSS (8.76 ⁰B), ascorbic acid (56.01 mg/100g) and lycopene content (6.65 mg/100g) was recorded maximum in T11 and was also at par with T¬10. Treatment T11 showed lowest values for days to first flowering, whereas exhibited minimum values for days to first fruit maturity (25.33), days to first harvest (86.54). Studies on insect pest viz., type of pests, seasonal incidence of major insect pests and their damage level were recorded. The results of this study revealed that cherry tomato crop was infested by Spodoptera litura, Helicoverpa armigera, Liriomyza trifolii under protected condition. Based on the seasonal incidence and damage level observed, Spodoptera litura may become potential pest on cherry tomato under protected condition.EnglishThesis