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The experiment was conducted to observe the effect of plant growth regulators (GA3 and NAA) and micro-nutrients (ZnSO4 and Borax) on vegetative growth, flowering and yield attributes of litchi (Litchi chinensis Sonn.). ZnSO4 applied @ 0.4% resulted in maximum per cent increase in plant height and canopy spread, i.e. 5.78% and 6.65% respectively. Whereas, application of Borax @ 0.4% exhibited maximum per cent increase in plant girth (8.72%). NAA @ 2.5 ppm was effective in improving the flowering parameters of litchi. With respect to physical parameters of fruit and yield component, application of borax @ 0.4% resulted in maximum fruit set (43.76%), number of fruits per tree (1128.67), fruit yield (25.11 kg/tree), fruit weight (22.24 g), aril weight (15.65 g) and minimum fruit cracking (5.08%). Lowest fruit drop percentage (60.91%) was however caused by application of ZnSO4 @ 0.4%.

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RNA silencing has recently gain momentum in the scientific world mainly due to its sequencing-specific gene inactivation that is conserved in among various organism including animals and plants. In fruit crops, various mechanism such as virus-induced gene silencing (VIGS), DNA methylation, Ribonucleic acid interference (RNAi) and Anti-sense mediated gene silencing has been reported. These epigenetic regulatory mechanisms are highly useful in fruit crops as it suppresses or silences gene responsible for undesirable morpho-agronomic characters.

A field experiment was carried out with the objectives to evaluate and assess the suitability of Turmeric seed rhizome sizes under mid hill conditions of Arunachal Pradesh. The experiment consisted seven treatments of different grades of Turmeric rhizome var. Megha Turmeric-1. The results of study revealed that heavier the mother rhizome, gave better plant growth characteristics. Further it was reported that use of 50-60 g mother rhizome as a planting material resulted in maximum in case of all biometric characteristics with a plant height (121.33 cm), leaf size of length (62.79 cm), breadth (18.05 cm), number of leaves per plant (7.33), number of tillers per plant (4.24), and stem girth (2.20 cm) which were significantly higher as compared to the treatments with smaller rhizomes. As far as fresh and dried rhizome yields are concerned, mother rhizomes (50-60 g) yielded maximum fresh rhizome (24.58 t/ha) and dried rhizome yield (4.79 t/ha) which reduced considerably with small seed size. Curcumin and oleoresin, an important biochemical property in turmeric were also exhibited maximum in terms of percent and yield when mother rhizome was 50-60 g used as planting material and this amount is followed by mother rhizome (30-40 g).

The present study was aimed at standardizing fertilizer and lime requirement for tissue banana (Grand Naine) cultivation in acidic soil of mid hill of Arunachal Pradesh The experiment was conducted at ICAR RC farm Gori, ICAR RC for NEH Region, AP centre, Basar. The effect of twelve different treatments of combination of fertilizers and Lime was studied on growth parameters of banana plant, post harvest fruit quality parameters and on the soil chemical and physical parameter their availability & uptake of major nutrients were also studied. The results revealed. Plant growth parameters like pseudo stem circumference (36.96 cm) and Plant height (92.85 cm) was highest in the treatment receiving L1F2. Similarly, treatment L2F2 recorded highest number of leaves (5.96), suckers (1.41) and leaf area (3586 cm2). Treatment L2F1 recorded lowest stem circumference (22.3 cm), number of leaves (3.52) and leaf area (1420 cm2). Similarly, treatment having L3F1 recorded lowest number of suckers (0.41). The plants treated with (50% lime + 100% RDF) performed best in terms of both yield and quality attributes. The effects of lime application significantly improve pH of soil that resulted in the improved the availability of phosphorous. Application of 125% fertilizer was not found to significantly enhance the yield of Banana. The lime application significantly improve the soil nutrient concentration Viz  Available N, P K, Ca pH and reduced Al concentration that resulted into enhance banana production compare to the control.

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