SHARMA, S.D.SINGH, DEEPIKA2016-11-172016-11-172013http://krishikosh.egranth.ac.in/handle/1/86111ABSTRACT The present investigation entitled “Effect of different levels of nitrogen through fertigation for growth and nutrient status of nectarine (Prunus persica Batsch var. nucipersica) cv. “Snow Queen”, was conducted on two year old Snow Queen nectarine plantations at the integrated horticultural based farming system model farm of Dr Y S Parmar University of Horticulture and Forestry, Nauni, during 2013. Experimental trees were given the treatments viz. 25, 50, 75, 100 per cent recommended dose of nitrogen through fertigation and 100 per cent recommended dose through conventional soil fertilization with three replications in the Randomized Block Design. Fertigation with 75 per cent recommended dose significantly increased the fruit size, fruit weight, total soluble solids and total sugars. However, titratable acidity highest in the fruits of the trees fertigated at 100 per cent recommended dose of nitrogen. The tree height, canopy volume, shoot growth, leaf area, chlorophyll content, leaf N, P, K, Zn, Cu, Fe, Mn and available N, P, K, micronutrients and organic carbon were found better under the treatment with 100 per cent recommended dose of nitrogen. Whereas, available Ca, Mg content and soil pH decreases in the soil with increasing the doses of nitrogen fertigation through urea. From the present investigation, it may be concluded that 75 per cent recommended dose was found better for growth parameters and fruit quality characteristics. whereas, leaf macro and micronutrients, soil nutrients were found better under 100 per cent recommended dose of nitrogen, closely followed by T3 (fertigation at 75 % recommended dose of nitrogen). In addition, fertigation with 75 per cent recommended dose resulted in 25 per cent saving of fertilizers.enThesis