rice whitebacked planthopper injury assessment field method
Term Information
Accession
CO_320:0000808
Name
rice whitebacked planthopper injury assessment field method
Ontology
CO_320_rice
Synonyms
None
Alternate IDs
None
Definition
Observe the damages on plants caused by whitebacked planthopper. For a field test, use an augmented experimental design with a susceptible check replicated at intervals across the whole trial. The test is considered a valid test for resistance if the hopper population is uniformly distributed at a high level across the screening box, as indicated by hopper counts on the susceptible check. A minimum of the following hopper density on susceptible check is necessary: a. 10 hoppers/hill at 10-15 days after transplanting, b. 25 hoppers / hiII at maximum tillering, c. 100 hoppers/hill at early booting stage
[source: unknown]
Comment
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Subset
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CO_320:0000808 rice whitebacked planthopper injury assessment field method