The current study sought to investigate the influence of chitosan biopolymer against microbial decay in tomato. In the present study, bulk-chitosan at different concentrations (0.01, 0.04, 0.08, 0.12, 0.16, 0.20% w/v) along with control were evaluated on tomato variety ՙDev՚  by dipping fruits for 6 min and stored at ambient temperature (27ºC±2). Bulk-chitosan at 0.16% was found most effective to prevent microbial decay and maintain sensory evaluation from day 1 to days 21 as compared to control. Based on the aforementioned results and comparative evaluation of different doses of bulk-chitosan, we concluded that chitosan is very effective at less concentration and thus exert minimum chemical load on the treated tomatoes. Therefore, it may claim that chitosan biopolymer have potential to protects tomato against microbial decay.

A field experiment consisting five levels of fertility and four levels of boron in RBD with three replications was conducted at Horticulture Farm, SKNAU, (Jaipur) during Rabi season. The findings showed that different levels of fertility used to have a significant impact on the growth, yield of cauliflower. Plant height at 30 and 60 DAT, the number of leaves per plant at 30 and 60 DAT and leaf area were all highest when 75% RDF through inorganic fertilizers and 25% RDF through vermicompost were applied. Also, it was found that the application of 50% RDF using inorganic fertilizers and 50% RDF through vermicompost treatment resulted in the highest curd yield per plot and curd yield per ha (190.89 q/ha).

Delayed transplanting and insufficient nutrient application are the major factors responsible for reducedonion yield. Proper planting time is critical for getting optimal bulb yield. Selection of right cultivar is one of themost important variables in getting higher growth and yield attributes for a particular agro-climatic condition. Anexperiment was conducted to determine the effect of transplanting date, cultivar and zinc application method onyield, yield attributes and economics of onion. Results were found to be significant for all the yield attributes,yield and economics of onion. Transplanting on 01st January significantly increased the average bulb weight(81.10 g), equatorial diameter (5.58 cm), polar diameter (4.52 cm), total bulb yield (387.42 q/ha), net return (Rs367963/ha) and B:C ratio (3.84) in a pooled analysis. Among the cultivars, significantly higher average bulbweight (79.37 g), equatorial diameter (5.48 cm), polar diameter (4.42 cm), total bulb yield (387.95 q/ha), net return(Rs 368680/ha) and B:C ratio (3.83) were recorded in Bhima Shakti. In zinc application methods, significantlyhigher average bulb weight (79.68 g), equatorial diameter (5.50 cm), polar diameter (4.42 cm), total bulb yield(386.67 q/ha), net return (Rs 364973/ha) and B:C ratio (3.78) were recorded with foliar spray of zinc sulphate @0.5 per cent at 30 & 45 DAT. The reduced neck thickness (0.70, 0.73 & 0.72 cm) was recorded on 01st Januarytransplanting, Bhima Shakti cultivar and foliar spray of zinc sulphate @ 0.5 per cent at 30 & 45 DAT, respectively.