Root and stem rot of lemon is a disease that damages greatly, make plants die and trees. Therefore, this research has shown the efficiency evaluation of herbicides fungus absorbed in the inhibition of fiber Phytophthora stored fungi. And parasitica assessment in field condition. The crop management properly. From the results of the laboratory experiment showed that the modified fungi Metalaxyl 25% WP (Tai (SIL), Metalaxyl apertium 25% WP (Zen Noh mill apertium) at high level concentration more than 250 micrograms per milliliter Effective in the inhibition of hyphal growth of fungi P. Parasitica the percent inhibition of more than 84.16 - 96.38 compared with the control. Lemon tree disease treatment by chemical control has better wound dry are broken ยอดใหม่. Flowering plant and compared with not using chemicals, falling leaves, branches, dry, perennial plants die.
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