01674naa a2200277 a 450000100080000000500110000800800410001910000180006024501510007826000090022952008680023865000140110665000130112065000120113365000280114565000150117365000190118865000100120765000210121765000290123865300210126765300190128870000170130770000200132477300520134411309152019-07-18       1974    bl ---       0--  u    #d1 aCHACKO, E. K.  aInvestigations on the use of (2-Chloroethyl) phosphonic acid (Ethephon, Cepa) for the control of biennial bearing in mango.h[electronic resource]  c1974  aBiennial bearing is a serious economic problem facing mango growers. In the past it has been attributed to the lack of new growth and insufficient carbohydrate and nitrogenous reserves following a year of heavy cropping. The results of our studies conducted over a period of 4 years have shown that ethephon (200 ppm) could be used to induce heavy flowering and fruiting during the "off year" in the notedly biennial bearing cv. 'Langra'. The spray applicationsof ethephon should be started during September and continued four to five times at 15-20 days intervalo Higher concentrations of ethephon, viz. 500, 1000 and 2 000 ppm, induced moderate to heavy leaf abscission in the experimental trees. Consecutive applications of 200 ppm ethephon for a period of 3 years did not show any decline in the vigour and yielding ability of the treated 'Langra' mango trees  aflowering  afruiting  amangoes  aplant growth substances  aFloração  aFrutificação  aManga  aMangifera Indica  aRegulador de Crescimento  aFloral induction  aInducao floral1 aKOHLI, R. R.1 aRANDHAWA, G. S.  tScientia Horticulturaegv. 2, p. 389-398, 1974.