OCR Text |
Show KILL OFF APPLE APHIS FEST Carbon Bisulphide May Be Applied to Roots by Injection or in Water Poured Around. Experiments in the use of poisonous poison-ous gases against the woolly apr'e aphis indicate that carbon bisulphide may with good results be applied to the roots by injection or in water poured nround the roots. Experiments in the control of the woolly P'lis m the roots of nursery apple stock by the use of poisonous gases indicate that while the use of carbon bisulphide 18 Impracticable under nursery condi-.. condi-.. nflVre lions, para-aieiiioronenzcue i promise against this pest. I |