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Classification of South African Bread Wheat Cultivars According to Hagberg Falling Number Reaction to Fertilizer Treatment
Author(s) -
Craven M.,
Barnard A.,
Otto W.,
Labuschagne M. T.
Publication year - 2007
Publication title -
cereal chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.558
H-Index - 100
eISSN - 1943-3638
pISSN - 0009-0352
DOI - 10.1094/cchem-84-3-0214
Subject(s) - cultivar , fertilizer , falling number , chemistry , yield (engineering) , statistical analysis , horticulture , mathematics , agronomy , zoology , biology , statistics , materials science , metallurgy , organic chemistry
The effect of three fertilizer treatments (suboptimal = 0 N, P, K kg/ha; standard = 20 N, 5 P, 5 K kg/ha; and optimal = 60 N, 15 P, and 15 K kg/ha) on the Hagberg Falling Number (HFN) of 15 South African bread wheats were investigated. No statistical significant effect on the HFN of wheat in general could be seen. A split‐plot analysis, however, indicated a cultivar effect for HFN response to fertilizer treatment. This allowed for the grouping of cultivars into four response groups: low, low‐to‐medium, medium, and high, according to HFN sensitivity to fertilizer treatment. A canonical variate analysis (CVA) was performed on the general performance of each cultivar with regard to three characteristics: yield, protein content, and HFN. This allowed for the refinement of risk groups as created by the split‐plot analysis for HFN response. However, HFN measured were never below the 220 sec cut‐off mark for grade.