พั�ลลภา กฤษณีไพับู ลย์�
chlorosis and stunting
healthy seed
infected seed
relative large sphaerical gall
spindle shape gall
small warty elevated spots
HOW TO SAMPLE SOIL? 1 . Fallow field or area planted to cover
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HOW TO SAMPLE SOIL ? 2. Row crop
- take samples from feeder root zone in the row
HOW TO SAMPLE SOIL ? 3 .
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in the row
HOW TO SAMPLE SOIL ? 4 .Individual
tree sample plant