Harminder SinghSaini, Amolpreet Kaur2019-11-162019-11-162019http://krishikosh.egranth.ac.in/handle/1/5810135474The present investigations “Effect of rootstocks and spacing on growth and productivity of plum (Prunus salicina L.) cv. Satluj Purple” were conducted at Fruit Research Farm, Department of Fruit Science, Punjab Agricultural University, Ludhiana during the years 2018 and 2019. The plum plants of cv. Satluj Purple grafted on four rootstocks viz. „Kala Amritsari‟, „Kabul Green Gage‟, „Sharbati‟ and „Flordaguard‟ were planted during January, 2015 at two spacing i.e. 6 x 6 m and 6 x 1.5 m. All the trees were trained to „Modified Leader‟ training system. Vegetative growth in terms of stock girth, scion girth, tree height, tree spread and canopy volume was maximum in trees grafted on Kala Amritsari and Kabul Green Gage rootstocks and minimum on Flordaguard rootstock. Reproductive growth (flowering, fruit set, fruit retention, number of fruits and fruit yield per tree) was also found to be higher on Kala Amritsari rootstock. Fruits harvested from trees grafted on Kala Amritsari and Kabul Green Gage matured earlier and were superior in fruit quality (fruit size, weight, color, TSS, titratable acidity and TSS/acid ratio). Irrespective of the rootstocks, the performance of plum trees in terms of growth, flowering, yield and fruit quality was better in 6 x 6 m planted trees as compared to trees planted at 6 x 1.5 m distances.ennullThesis