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Crop control in apple by 2-chloroethylphosphonic acid


, : Crop control in apple by 2-chloroethylphosphonic acid. Acta Horticulturae (80): 275-278

Vegetative growth was not checked in Golden Delicious or Carola apple trees sprayed once or twice with ethephon at 150 or 300 p.p.m. annually for 4 years, but 300 p.p.m. increased bud formation. Flower bud production on heavily-cropping trees was stimulated by 2 sprays of 150 p.p.m.

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Related references

Lu, Y.C., 1975: Effects of 2-chloroethylphosphonic acid, succinic acid-2,2-dimethyl hydrazide and 2,4,5-trichlorophenoxypropionic acid on fruit condition of the apple Malus sylvestris Mill. Foliar applications of growth regulators on several cultivars were conducted in Virginia from 1971 to 1973. Different cultivars had different softening rates when treated with 2-chloroethanephosphonic acid. Fruits of Golden Delicious, Grimes Golde...

Ketchie, D.O.; Williams, M.W., 1970: Effect of fall application of 2-chloroethylphosphonic acid on apple trees. Spraying limbs or whole trees of Delicious and Golden Delicious in the autumn with Ethrel at 250, 500 or 1, 000 p.p.m. significantly decreased their fruit set and vegetative growth the following season.

Bakun, T.V.; Ostreiko, S.A.; Kotov, V.I., 1974: The use of beta - chloroethylphosphonic acid for defoliating apple transplants in the nursery. Ethrel [ethephon] at 1000-10 000 mg/l was applied to 1-year-old Antonovka, Melba, Wealthy and Korichnoe Novoe trees. The greatest defoliation was observed at the highest rate but the 5000 mg/l rate was quite effective when used late in the season....

Schmidt, S.; Katfuss, M.; Buban, T., 1975: The flower promoting effect of 2-chloroethylphosphonic acid on apple trees. Ethephon at 150 or 300 p.p.m. was applied to the apple cvs Carola and Golden Delicious in the German Democratic Republic and Jonathan and Golden Delicious in Hungary. Two applications at 150 p.p.m. in June improved flower bud differentiation most...

Blinovskii, I.; Sorkina, G.; Siusheve, A.; Tuchkov, V.; Kalashnikov, D.; Rakitin, L.; Linev, M., 1984: Translocation and destruction of microamounts of 2-chloroethylphosphonic acid in different organs of apple tree. Khimiia v sel'skom khoziaistve: 1) 41-46

Katzfuss, M.S.hmidt, S.B.ban, T., 1975: Preliminary results of trials on regulation of yields in apple trees by 2-chloroethylphosphonic acid. Archiv fur Gartenbau: 3 (7) 401-405

Teskey, J.; Shanmuganathan, M., 1971: Carbon dioxide and ethylene evolution resulting from use of low rates of 2-chloroethylphosphonic acid (Ethrel) on apple. Northern Spy trees were sprayed with Ethrel (as Amchem 66-329, containing 218 g. a.i./l.) at 30, 50 and 70 p.p.m. 5 days before harvesting. Control trees were sprayed with water. Ethrel at the low concentrations used had no apparent effect on the...

Sal'-Kova, E.; Bulantseva, E., 1982: Ethylene evolution during interaction of apple tissues with 2-chloroethylphosphonic acid and its salts, and the effect of protein biosynthesis inhibitors on this process. Doklady Botanical sciences Akademiia nauk SSSR 262(262-264): 27-30

Kamal, A.L.; Marroush, M., 1971: Control of chocolate spot in Potato tubers by foliar spray with 2-chloroethylphosphonic acid. Incidence of this physiological disorder (internal brown spot) can reach up to 60% in var. Arran Banner in Lebanon. Control was obtained by spraying with ethephon at 200-600 ppm.

Lavee, S.; Erez, A.; Shulman, Y., 1977: Control of vegetative growth of grape vines (Vitis vinifera) with chloroethylphosphonic acid (ethephon) and other growth inhibitors. To retard shoot growth various growth regulators were applied to 5 grapevine cvs. Ethephon at 480 p.p.m. effectively inhibited terminal growth and prevented the opening of lateral buds on the shoots for about 8-10 weeks but somewhat enhanced matur...