The present investigation entitled, Effect of Growth Regulators on growth, yield and quality of Pear cv Carmen under High Density Planting, was carried out during the years 2016 and 2017 in experimental field of SKUAST-K, Shalimar. The experiment was laid out in Randomized Block Design with three replications and two plants per replication. Four year old pear plants cultivar Carmen were planted on Quince-c rootstock at a distance of 3x3 m.Vegetative growth parameters consisting of plant height, plant spread, and annual extension growth were measured as per the standard procedures. Fruit yield was calculated by weighing all the fruits harvested individually from each experimental tree and average yield was expressed as kg/tree. Fruit length and fruit diameter were measured by vernier caliper and fruit firmness was measured with pressure penetrometer. Fruit weight was determined by individually weighing the fruits obtained from each experimental plant on a common monopan balance and the average weight was recorded by using the procedure given by Rangana (1986). TSS was measured with the help of Zeiss hand refractometer. Titrable acidity was determined by titration method and values were expressed as percentage of malic acid (Rangana, 1986). Total sugars were determined by Lane and Eynan method (A.O.A.C., 1984). The data obtained was subjected to the statistical analysis in S-plus software.  Growth regulators were found to have a significant effect on growth parameters like Incremental extension growth, increment in plant height and increment in plant spread. Maximum increment in plant height (22.01 and 23.95 cm), spread (45.19 and 46.14 cm), and annual extension growth (32.36 and 33.57 cm) was recorded with 20ppm promalin, however, average fruit yield was higher in pear trees sprayed with 20 ppm promalin followed by 10 ppm and 30 ppm, however with the application of Gibberllic acid, fruit yield was found highest with 25ppm. Fruit length, fruit diameter and fruit weight were found highest with 20 ppm promalin, however the pear fruits harvested from the trees sprayed with 25 ppm Gibberllic acid were found bigger in size than control. Average fruit firmness was found highest with 50ppm promalin, however, in case of Gibberllic acid pear fruit firmness was found highest with 25 ppm. TSS, Titrable acidity and Total sugars were found highest with 20 ppm promalin, while in case of Gibberllic acid it was found highest with 25 ppm followed by 50 ppm and control. From the foregoing research, it was concluded that pear trees cv Carmen resulted in better productivity and quality by the use of growth regulators like, Promalin @ 20 ppm and Gibberllic acid @ 25 ppm, and hence proved to be beneficial for sustainable development of farmers as they have provided better yield and efficient fruit set.

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