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Methods of measuring rhizoctonia patch of cereals in Western Australia
Author(s) -
MACNISH G. C.,
LEWIS SUSAN
Publication year - 1985
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1985.tb01345.x
Subject(s) - rhizoctonia , biology , yield (engineering) , sampling (signal processing) , aerial photography , veterinary medicine , agronomy , horticulture , remote sensing , rhizoctonia solani , geography , computer science , medicine , materials science , computer vision , filter (signal processing) , metallurgy
Methods of measuring rhizoctonia patch in cereals are compared. Included are mapping and determination of area with a leaf area planimeter, aerial photography and determination of area by a grid overlay, a patch scoring technique, sampling and assessing for rhizoctonia root rot, and determination of yield. Mapping, aerial photography, and patch scoring were all highly correlated. Of these methods, the patch scoring technique was the quickest and most convenient. Yield within a patch was about 8% of yield immediately outside the patch.