Classification of South African Bread Wheat Cultivars According to Hagberg Falling Number Reaction to Fertilizer Treatment

• Published in: Cereal chemistry Vol. 84; no. 3; pp. 214 - 219
• Main Authors: Craven, M, Barnard, A, Otto, W, Labuschagne, M.T
• Format: Journal Article
• Language: English
• Published: St. Paul, MN The American Association of Cereal Chemists, Inc 01.05.2007; American Association of Cereal Chemists
• Subjects: Biological and medical sciences; breadmaking quality; canonical variate analysis; Cereal and baking product industries; Cultivars; falling number; fertilizer application; fertilizer rates; Food industries; Fundamental and applied biological sciences. Psychology; Hagberg Falling Number Rraction; nitrogen; NPK fertilizers; phosphorus; potassium; sensory properties; split-plot analysis; Triticum aestivum; wheat; South Africa; Fertilization; Soft wheat; Classification; Wheat bread; Cultivar
• ISSN: 0009-0352; 1943-3638
• DOI: 10.1094/CCHEM-84-3-0214

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.