Classification of South African Bread Wheat Cultivars According to Hagberg Falling Number Reaction to Fertilizer Treatment |
| |
| Authors: | M. Craven A. Barnard W. Otto M. T. Labuschagne |
| |
| Affiliation: | 1. Agricultural Research Council-Small Grain Institute (ARC-SGI), Private Bag X1251, Potchefstroom, 2520, South Africa.;2. Agricultural Research Council-Small Grain Institute, Private Bag X29, Bethlehem, 9700, South Africa.;3. University of the Free State, Department of Plant Sciences. Bloemfontein, 9300, South Africa. |
| |
| Abstract: | 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. |
| |
| Keywords: | |
|
|
