The effects of irrigation, nitrogen fertilizer and grain size on Hagberg falling number, specific weight and blackpoint of winter wheat

2004 ◽  
Vol 84 (3) ◽  
pp. 227-236 ◽  
Author(s):  
Matthew P Clarke ◽  
Mike J Gooding ◽  
Steve A Jones
Keyword(s):  
Grain Size ◽  
Winter Wheat ◽  
Nitrogen Fertilizer ◽  
Specific Weight ◽  
Falling Number ◽  
Hagberg Falling Number

Effects of spring nitrogen fertilizer on the Hagberg falling number of grain from breadmaking varieties of winter wheat

1986 ◽  
Vol 107 (2) ◽  
pp. 475-477 ◽  
Author(s):  
M. J. Gooding ◽  
P. S. Kettlewell ◽  
W. P. Davies ◽  
T. J. Hocking
Keyword(s):  
Nitrogen Fertilizer ◽  
European Economic Community ◽  
Amylase Activity ◽  
Quality Measurement ◽  
Fertilizer Application ◽  
Alpha Amylase ◽  
Nitrogen Application ◽  
Falling Number ◽  
Previous Suggestion ◽  
Hagberg Falling Number

Hagberg falling number (HFN) is used to estimate alpha-amylase activity in wheat grain (Perten, 1964) and it is utilized by flour millers and the Intervention Agencies of the European Economic Community as a grain quality measurement for breadmaking (Anon. 1983). High nitrogen fertilizer application can lead to lodging and can decrease HFN (Brun, 1982). This may result from damp conditions around the ear encouraging germination, and therefore increasing alpha-amylase activity (Stewart, 1984). However, since nitrogen application can also delay maturity, it has been suggested that this influence could maintain high falling number (Anon. 1985). Pushman & Bingham (1976) found that increased nitrogen application decreased alpha-amylase activity, lending support to the previous suggestion, but contrasting with the results of Brun (1982).

The impact of supply, demand and grain quality on the UK bread and feed wheat price differential in the UK

2006 ◽  
Vol 144 (5) ◽  
pp. 411-419 ◽  
Author(s):  
P. D. HOLLINS ◽  
P. S. KETTLEWELL ◽  
S. T. PARSONS ◽  
M. D. ATKINSON
Keyword(s):  
Statistical Model ◽  
Bread Wheat ◽  
Interannual Variation ◽  
Grain Quality ◽  
Quality Criterion ◽  
Falling Number ◽  
Hypothetical Model ◽  
The Uk ◽  
The Impact ◽  
Hagberg Falling Number

The difference between the bread wheat and feed wheat prices in the UK (the premium) is an important influence on behaviour throughout the entire grain chain. The aim of the present study was to quantify the influence of grain quality and other factors on interannual variation in the premium calculated as a proportion of the feed price. A hypothetical model of the UK wheat economy was devised, appropriate annual national data from 1982 to 2000 were collected for each component and multiple regression was used to develop a statistical model for the premium.The statistical model included livestock numbers (calculated as pig equivalents), Hagberg falling number and wheat stocks, which together explained 0·80 of the interannual variation in the premium. A high premium was associated with high livestock numbers, low Hagberg falling number and low wheat stocks. These variables were included in the hypothetical model because: livestock numbers represent demand for feed wheat; Hagberg falling number is a quality criterion for purchase of bread wheat with a low value indicating poor quality and thus a smaller supply of bread wheat; wheat stocks are one of the sources of supply of wheat. It was concluded that of the 16 supply, demand or price variables in the hypothetical model the main variables associated with the premium from 1982 to 2000 were demand for feed wheat, quality of the wheat harvest and carry-over of wheat from the previous harvest.

Components of test weight of ten varieties of winter wheat grown with two rates of nitrogen fertilizer application

1975 ◽  
Vol 85 (3) ◽  
pp. 559-563 ◽  
Author(s):  
Fiona M. Pushman ◽  
J. Bingham
Keyword(s):  
Winter Wheat ◽  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Ventral Surface ◽  
Fertilizer Application ◽  
Test Weight ◽  
Varietal Differences ◽  
Flour Yield ◽  
Packing Efficiency ◽  
Xylene Separation

SUMMARYVarietal and environmental factors which influence test weight were investigated in a field trial with ten varieties of winter wheat and two rates of nitrogen fertilizer. Varietal differences in test weight were correlated positively with the protein content of the grain and inversely with grain yield but they were not related to 1000-grain weight or to flour yield. Variation in test weight associated with varietal and environmental effects in protein content was due to differences in the density of the grain, as measured by displacement of xylene. Separation into density grades within a sample by a flotation method showed a similar relationship with protein content. There were also varietal differences in packing efficiency of the grain. In the case of Maris Huntsman a poor packing efficiency was considered to stem from morphological features of the floret and developing grain which lead to characteristic transverse folds in the ventral surface of the mature grain. For wheat grown in the United Kingdom, test weight may provide a useful guide to flour yield for samples of one variety but it is likely to be misleading for comparisons between varieties.

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