National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Plant growth hormones are the chemicals, which in small amount promote growth, development and differentiation of cells and tissues. It plays a vital role in guava production and helps in the induction of flowering, fruiting buds development, fruit set, fruit thinning, fruit elongation, premature fruit drop prevention, and inhibiting ripening process. An investigation was conducted to study the efficacy of chemicals on the quality parameters of guava in the Experimental Farm and Laboratory, Department of Horticulture, College of Agriculture, Assam Agricultural University, Jorhat during 2016-2018. A total of 6 (six) treatments with four replications and two seasons (rainy and winter) were laid out in a Randomized Block Design. The treatments comprised of T1 – Naphthalene acetic acid (NAA at 100 ppm), T2 – Naphthalene acetamide (NAD at 40 ppm), T3 – Naphthalene acetamide (NAD at 60 ppm), T4 - Urea (2%), T5 – Urea (5%) and T6 – Urea (10%) which were applied during the flowering in the month of April, 2017. It helped in deblossoming of flowers, increase the yield (20.73kg/plant), juice content (48.45%), TSS (10.73oBrix), reducing sugar (3.74%), non-reducing sugar (3.10%), total sugar (6.82%), sugar acid ratio (45.46), pectin content (3.42%), ascorbic acid (264.18 mg/100 g) and also decrease the titrable acidity (0.15%). NAD @ 60ppm was recorded to be the best treatment to fulfill the quality parameters of guava in the winter season.
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