Control Effects Fir Essencial Oil on Dumping-off of Several Kinds of Vegetable Seedlings

2005 
Using pentachloronitrobenzene(PCNB) as auxiliary meterial, the control effection dumping-off and germination inhibation of fir essencial oil were investigated on several vegetables.The results show that the high-concentration fir essencial oil inhibits seeds from germinating, the different concentrations of fir essencial oil have special control effect on watermelon damping-off, PCNB(1 500 times dilution) mixed with fir essencial oil (1 000 time dilution) is superior to the others, and the control effect increases 49.2% more than using 1 500 times of PCNB dilute alone.
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