Vol. 7 (6) : November-December 2016 issue
Green Farming Vol. 7 (6) : 1465-1468 ; November-December, 2016
Efficacy of foliar applications of ethephon on deblossoming, defruiting & defoliation in Nagpur mandarin (Citrus reticulata B.)
R.K. JHADEa1*, A.D. HUCHCHEb2, K.K. UPRETIc3, P.K. JAINa4 and M.S. LADANIYAb5
aDepartment of Horticulture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur – 482 004 (Madhya Pradesh),
bICAR-Central Citrus Research Institute (Formerly NRCC) Amarawati Road, Nagpur – 440 033 (Maharashtra)
cDivision of Plant Physiology and Biochemistry, ICAR-IIHR, Hessaraghatta, Bengaluru – 560 089 (Karnataka)
Designation : 1Ph.D. Scholar *(jhaderk49@gmail.com), 2,3Principal Scientist, 4University Professor & Head, 5Director
Subject : Fruit Science and Pomology
Paper No. : P-5132
Total Pages : 4
Received : 04 May 2016
Revised accepted : 22 October 2016
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Citation :
R.K. JHADE, A.D. HUCHCHE, K.K. UPRETI, P.K. JAIN and M.S. LADANIYA. 2016. Efficacy of foliar applications of ethephon on deblossoming, defruiting & defoliation in Nagpur mandarin (Citrus reticulata B.). Green Farming Vol. 7 (6) : 1465-1468 ; November-December, 2016
ABSTRACT
A preliminary trial was laid out during February 2015 at ICAR-CCRI, Nagpur for quick deblossoming/ defruiting of Ambia (spring flowering) crop of Nagpur mandarin for shifting of cropping to Mrig (monsoon flowering) cropping with three concentrations of ethephon (2-Chloroethyl phosphonic acid) at 500, 1000 and 1500 ppm sprayed once at full bloom stage. The treatment with 1000 ppm of ethephon was effective in complete deblossoming/defruiting of Ambia flush of Nagpur mandarin 9 days after spray. After 6 days of spray, ethephon with 1500 ppm concentration was effective in 95.87% deblossoming/defruiting, whereas 1000 ppm concentration effected about 73.91 % deblossoming/defruiting.
Key words :
Deblossoming, Defruiting, Defoliation, Endogenous phytohormones, Ethephon, Leaf water potential, Nagpur mandarin.
