Effect of foliar application of plant growth regulators and boron on quality of guava (Psidium guajava L.) CV. L-49

Abstract

An experiment was undertaken to study the effect of Plant Growth Regulators and Boron on growth and yield of guava during winter season of the year 2015 Khengarvav farm, Department of Horticulture, Junagadh Agricultural University, Junagadh. The experiment was laid out in a Randomized Block Design (RBD) with three replications and nine treatments Results of the experiment Quality parameter in terms of Vitamin -C content was noted maximum (178.93 mg/100g pulp and 175.48 mg/100g pulp), on 4th and 6th days after storage, respectively, total soluble solid (12.72 °Brix on and 12.80 °Brix ) 4th and 6th days respectively, non-reducing sugar (2.68%, 3.02%) 4th and 6th days respectively, pectin content (0.753% and 0.710%) on 4th and 6th days after storage respectively, whereas, minimum acidity was (0.27% and 0.24%) was recorded in NAA 100 ppm. Foliar application boron 0.2% treatment noted the highest reducing sugar (4.57% and 4.74%), total sugar (6.90% and 7.12%) 4th and 6th days after storage, respectively. The maximum TSS: acid ratio was observed under treatment NAA 40 ppm (51.67%) at 4th days after storage and CCC 500 ppm (40.45%) at 6th days after storage.