Application of TDS Plant Growth Regulator on Chinquapin trees

Fruit bearing number of chinquapin ( Castanea henryi) would be increased obviously with the treatment of spraying TDS growth regulator so1ution (3,5,7 g·L-1) before revea1ing of male inflorescence.Results of increasing fruit bearing number and seed yield with the treatment of spraying the same concentration TDS growth regulator solution one more time early before revealing of male inflorescence is better than that with the treatment of spraying TDS growth regulator only before revealing of male inflorescence.The best results increasing yield would be obtained with the treatment of spraying 5 g·L-1 TDS growth regulator solution before and early before revealing of male inflorescence.Fruit bearing number and seed yield would be raised 57.3% and 22.2% respectively.