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 |
The present investigation was carried out at AICRP on Citrus, Citrus Research Station, Tirupati, Andhra Pradesh during the year 2015 under Dr. YSR Horticultural University, to find out Effect of Plant growth Regulators on flowering and yield parameters of summer crop in acid lime (Citrus aurantifolia Swingle) cv. Balaji. Trees were sprayed with treatments viz Spraying GA3 @ 50 ppm during June + CCC @1000 ppm during September + KNO3 2% during October, Spraying CCC @ 200 ppm (Chloromequat chloride) 1st in August, 2nd in September followed by light pruning in September and heavy irrigation in mid-October, Application of Paclobutrazol @ 5 ml per meter canopy 4 times at 45 days interval starting from July to December, Spraying NAA @ 200 ppm during December, Spraying 2, 4-D @ 40 ppm during November + 20 ppm during February, Imposition of 30 days of soil moisture stress during October followed by 50 ppm Ascorbic acid spray at release of stress, Spraying ethephon @ 200 ppm during the month of October, With holding irrigation (Bahar) for 30 days in September followed by application of recommended dose of fertilizers and irrigation in the month of November and along with control (Not spray). The data recorded from the results concluded that minimum number of days for initiation of flowering was recorded with the treatment application of spraying NAA @ 200 ppm during December, highest number of flowers per shoot was recorded with drenching of Paclobutrazol @ 5 ml per meter for four times starting from July to December, highest percentage of flower retention recorded in the treatment spraying GA3 50 ppm during June + CCC @ 1000 ppm during September + KNO3 2% during October, minimum number of days taken from flower to marble stage was recorded with spraying 30 days of soil moisture stress during October with 50 ppm ascorbic acid spray at release of stress, minimum number of days taken from marble to maturity stage was recorded with control treatment and also with spraying ethephon @ 200 mg during October and maximum fruit yield per tree was recorded with Spraying GA3 @ 50 ppm during June + CCC @ 1000 ppm during September + KNO3 @ 2 % during October.
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