Herbicide injury diagnosis

Due to steep rice roots, nutrient deficiency or pest , and sometimes there will be similar with herbicide injury symptoms , but through research and analysis , you can still determine whether they are herbicide injury .

From the amount of pesticide low pressure sprayer spraying periods and judgment

If application time after transplanting of rice l ~ 2d, rice case sensitive , sometimes injury. Administered high doses of individual pesticide products are also prone to injury.

Check fertilizer, soil conditions

Irrigation after the drug is too deep ( immersion growing point ) , easy to produce injury . Check whether due to improper fertilization , or administration no decomposition of organic manure, green manure or straw waterlogged field caused by improper growth of plants adverse symptoms appear .

Check pests

Rice thrips and rice food rootworm hazards rice plants will grow shorter , small clusters , tip section tubular roll becomes brown, fibrous roots short . Ordinary rice dwarf virus symptoms are mainly yellow leaves and withered volumes, dwarf plants , began to fade from the top tip , plaques appear broken , but the veins remain green , leaf green and yellow stripes often has the obvious .

Look around fruit tree sprayer spraying seedlings growing

After the normal green rice transplanting ( Li Miao ) , after application such as abnormal symptoms, and adjacent seedling quality with the same species of other plots seedlings grew normally , this may be caused by injury .