Rana, G.S.Yadav, Monika2019-12-162019-12-162019http://krishikosh.egranth.ac.in/handle/1/5810137816The current study entitled “Studies on the effect of different sources of fertilizers on yield and quality of kinnow mandarin” was carried out at experimental orchard, Department of Horticulture, CCS Haryana Agricultural University, Hisar during 2017-18. Soil application of different sources of fertilizers in a RBD with three replications by taking one replication per plant on 8-year-old kinnow plants raised on rough lemon rootstock. The effect of different fertilizer sources of nitrogen (N), phosphorus (P) and potassium (K) as well as different number of split applications on vegetative growth of plants were observed in terms of initial fruit set, final fruit retention, fruit drop, TSS, acidity, ascorbic acid and sugar content. The leaf and soil analyses with respect to N, P and K were done to establish the effect of differential fertilizer treatments on plant nutritional status as well as availability of these elements in the soil Ammonium sulphate(2838gm) + DAP(695gm) +KNO3(230gm) +ZnSO4 (200gm) proved most effective in improving growth parameters and yield. However, fruit quality parameters were enhanced with Ammonium sulphate (2975gm) +SSP (2000gm) +KNO3 (230gm) +ZnSO4 (200gm). Peel thickness increased with soil application of fertilizers. Similarly, improved leaf N, P and K content along with soil N, P, K and Zn, content was found with Ammonium sulphate (2838gm)+DAP (695gm)+KNO3(230gm)+ZnSO4(200gm) and Ammonium sulphate (2975gm)+ SSP (2000gm) +KNO3(230gm)+ZnSO4(200gm). However, no significant effect was observed on soil pH, EC, available Cu and Fe. Number of seeds per fruit was not considerably affected by different sources.ennullThesis