Effect of foliar spray of zinc sulphate and gibberellic acid on growth and quality of guava g-27 (psidium guajava l.
Answers
An investigation was conducted on uniform, healthy, eight year old trees of guava (Psidium guajava L.) cv.-L-49 at Fruit Research Farm, Department of Fruit Science at College of Horticulture and Forestry Jhalawar, during 2017-2018. Spray of various doses of GA3 (0 ppm, 50 ppm and 100 ppm), urea (0 %, 1.0 % and 2.0 %) and number of spray (one spray and two spray) compared with control. Maximum number of fruits per plant, fruit weight, fruit yield per plant, estimated yield per hectare and ascorbic acid were recorded with T18 treatment (Two spray of GA3 100 ppm + urea @ 2 %). Further significantly increased quality characteristics like maximum TSS, total sugar, reducing sugar of fruits were recorded with T17 treatment (Two spray of GA3 100 ppm + urea @ 1 %).