An experiment entitled "Effect of different levels of Nitrogen and Vermicompost on growth, development and photosynthetic efficiency of Kinnow mandarin" was conducted at the Fruit Research Farm, Department of Fruit Science, College of Horticulture and Forestry, Jhalawar during October, 2012 to March, 2013. The experiment consisted of 16 treatment combinations having four levels of each nitrogen and vermicompost. Among different doses of nitrogen, highest dose i.e. nitrogen @ 350 g/plant was found significantly superior over other treatment with respect to most of the plant growth, development and photosynthetic efficiency parameters including soil physico-chemical properties and leaf nutrient status. Likewise, out of different doses of vermicompost, V3 treatment i.e. vermicompost @ 20 kg/plant also exhibited significant effect. In case of interaction effect of nitrogen and vermicompost, the application of T15 treatmenti.e. nitrogen @ 350 g/plant + vermicompost 20 kg/plant was found best with regards to plant growth, development and photosynthetic efficiency parameters including soil physico-chemical properties and leaf nutrient status.
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