Classify plant diseases depending upon their occurrence and transmission.
Plant disease Occurrence Transmission
(i) Blast Rice Air-borne
(ii) Rust Wheat Air-borne
(iii) Wilt Chick pea Soil-borne
(iv)Stem root Pigeon pea Water-borne
(v) White rust Mustard Air-borne
The diseases in crops are either Air borne, Soil borne and water borne. These disease destroy the crop or reduce its yield.
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