The effect of fallowing on yield of wheat. III. The effect on grain nitrogen content

1978 ◽  
Vol 29 (4) ◽  
pp. 685
Author(s):  
RJ French
Keyword(s):  
Water Supply ◽  
Nitrogen Content ◽  
Nitrogen Supply ◽  
Wheat Grain ◽  
Dominant Effect ◽  
Nitrogenous Fertilizer ◽  
Growing Seasons ◽  
Australian Wheat ◽  
Grain Nitrogen ◽  
Nitrogen Percentage

The nitrogen content of wheat grain in the South Australian wheat-belt is related to water and nitrogen supply. Grain nitrogen decreased with increasing water supply; it tended therefore to be less in wet seasons, less under fallow because of additional stored water and less on fine-textured soils which also provided more water. Grain nitrogen increased as the nitrogen supply was increased either as additional nitrate due to fallow or as nitrogenous fertilizer. The effect of fallow on grain nitrogen varied with the season. In dry growing seasons, the grain nitrogen percentage was usually higher on the non-fallow treatment, because of the dominant effect of a lesser water supply. In moist growing seasons, the grain nitrogen percentage was higher on the fallow because of the dominant effect of a better nitrogen supply. Since rainfall is unpredictable, the net effect of fallowing on the grain nitrogen percentage is also unpredictable.

Some observations on the influence of nitrogen fertilizer applied at seeding on the nitrogen content of the wheat grain

1964 ◽  
Vol 4 (15) ◽  
pp. 345 ◽  
Author(s):  
JS Russell
Keyword(s):  
Nitrogen Content ◽  
Nitrogen Fertilizer ◽  
Climatic Factors ◽  
Yield Response ◽  
Wheat Grain ◽  
Nitrogen Yield ◽  
Grain Nitrogen ◽  
Nitrogen Percentage

The effect of nitrogen fertilizer applied at seeding on the nitrogen content of wheat grain was studied in 63 experiments during the six seasons 1956-1961. The overall effect of fertilizer was to increase grain nitrogen percentage, but there were situations where no change and even decreases in grain nitrogen percentage were found. The magnitude of the changes due to nitrogen fertilizer was small in relation to change brought about by climatic factors. Both the change in nitrogen content and nitrogen yield from applied fertilizer showed a relation to the nitrogen content of grain from unfertilized plants. Significant differences between varieties were found for nitrogen yield response but not for nitrogen content response.

The effects of rates and time of application of nitrogenous fertilizer on barley in south-east Scotland

1960 ◽  
Vol 54 (3) ◽  
pp. 291-299 ◽  
Author(s):  
J. C. Holmes ◽  
W. D. Gill ◽  
J. A. B. Rodger
Keyword(s):  
Nitrogen Content ◽  
Ammonia Level ◽  
The Other ◽  
Optimum Level ◽  
Optimum Yield ◽  
Time Of Application ◽  
Nitrogenous Fertilizer ◽  
Farm Type ◽  
Commercial Farms ◽  
Grain Nitrogen

1. Two series of simple nitrogen manuring trials, one on level of sulphate of ammonia applied to the seedbed at twenty-two centres and the other on the time of top dressing with ‘Nitro-Chalk’ at nineteen centres, were conducted on commercial farms in south-east Scotland during 1954 to 1957.2. The optimum level of sulphate of ammonia varied with season and farm type. The optimum dressing was at least 0·9 cwt. N/acre in the dry season of 1955, and in the other years was estimated to be 0·9 cwt. N/acre on arable farms and about 0·-25–0·4 cwt. on ley rotation farms when the barley did not follow sheeped turnips. In the latter event no fertilizer was best.3. The nitrogen content of the grain increased little until after the 1 cwt. sulphate of ammonia level, although the optimum yield was not obtained in many experiments without some rise in the grain nitrogen content.

The performance of three Australian wheat varieties at high levels of nitrogen supply

1964 ◽  
Vol 4 (12) ◽  
pp. 39 ◽  
Author(s):  
KP Barley ◽  
NA Naidu
Keyword(s):  
Soil Water ◽  
Field Experiments ◽  
Low Fertility ◽  
Nitrogen Fertilizers ◽  
Wheat Varieties ◽  
Australian Wheat ◽  
Dry Seasons ◽  
Grain Nitrogen ◽  
Nitrogen Contents ◽  
Nitrogen Percentage

The response of Gabo, Javelin 48, and Bencubbin 48 to nitrogen fertilizers has been compared and changes in soil water and mineral nitrogen contents during the growing season described. Field experiments were conducted on a red brown earth at low and moderate fertility levels in wet and in dry seasons. Nitrogen fertilizer increased tillering early in the season, the greatest increase being shown by Bencubbin. In three of four experiments application of nitrogen led to earlier depletion of soil water, and high rates (60 lb an acre, 120 lb an acre of nitrogen) reduced the grain yield. Gabo was less affected than the other two varieties. On low fertility sites each fertilizer increment produced a considerable increase in grain nitrogen percentage.

Nitrogen content of wheat grain as as indication of potential yield response to nitrogen fertilizer

1963 ◽  
Vol 3 (11) ◽  
pp. 319 ◽  
Author(s):  
JS Russell
Keyword(s):  
Grain Yield ◽  
Nitrogen Content ◽  
Nitrogen Fertilizer ◽  
Cultural Practices ◽  
South Australia ◽  
Yield Response ◽  
Regression Equations ◽  
Wheat Grain ◽  
Potential Yield ◽  
Grain Nitrogen

Examination of results from a large number of experiments in the wheat growing areas of South Australia has shown a relation between grain yield response to nitrogen fertilizer and both grain nitrogen percentage and the ratio. (Yield of grain)/(Amount of nitrogen in grain and straw) of corresponding unfertilized wheat plants. With Gabo, large yield responses to nitrogen fertilizer were associated with grain nitrogen percentages of less than 2.0 per cent N (9.9 per cent protein). Above 2.3 per cent N (11.3 per cent protein) positive responses to nitrogen were small and some negative responses were found. Similar overall trend were shorn by Insignia 49, Sabre and Quadrat. Exponential regression equations were calculated for Gabo allowing prediction of grain yield response at rates up to 46 lb fertilizer N an acre under conditions which result in grain protein contents of 7.5 to 16 per cent. Most profitable rates of nitrogen fertilizer application were also calculated for several different fertilizer-grain price levels. Possible value of the nitrogen content of wheat grain in the selection of regions, soil types, and cultural practices where nitrogen fertilizer may be used is discussed.

Technological Indices of Spring Wheat Grain Depending on the Nitrogen Supply

2019 ◽  
pp. 753-761
Author(s):  
Larysa Novak ◽  
Vitalii Liubych ◽  
Serhii Poltoretskyi ◽  
Mykola Andrushchenko
Keyword(s):  
Spring Wheat ◽  
Nitrogen Supply ◽  
Wheat Grain ◽  
Technological Indices

EFFECT OF SULPHUR TREATMENTS ON YIELD AND NITROGEN AND SULPHUR CONTENT OF ALFALFA GROWN ON SULPHUR-DEFICIENT AND SULPHUR-SUFFICIENT GREY WOODED SOILS

1961 ◽  
Vol 41 (4) ◽  
pp. 709-715 ◽  
Author(s):  
R. R. Cairns ◽  
R. B. Carson
Keyword(s):  
Nitrogen Content ◽  
Relative Abundance ◽  
Nitrogen Assimilation ◽  
Calcium Sulphate ◽  
Nitrogen Supply ◽  
Physiological Functions ◽  
Root Nodulation ◽  
Main Effect ◽  
Sulphate Sulphur ◽  
Elemental Form

Sulphur applied in the elemental form, or as sodium or calcium sulphate, on Grey Wooded soils, increased yields of alfalfa on sulphur-deficient Loon River loam, but not on sulphur-sufficient Garrick loam. The quantity of sulphate-sulphur was extremely low in the alfalfa grown on untreated Loon River loam and increased markedly as a result of the application of sulphur to the soil. Although herbage from untreated areas of the sulphur-deficient soil contained a slightly higher per cent nitrogen in 1955 than that grown on the sulphur-sufficient soil, sulphur treatment increased nitrogen content and yield of nitrogen on the sulphur-deficient soil. The relative abundance of nitrogen in the herbage grown on the check areas of the deficient soil suggests that the main effect of sulphur was not on root nodulation or nitrogen supply, but rather on nitrogen assimilation and other physiological functions of the sulphur-containing compounds within the plant.

Wheat grain yield and grain-nitrogen relationships as affected by N, P, and K fertilization: A synthesis of long-term experiments

2019 ◽  
Vol 236 ◽  
pp. 42-57 ◽  
Author(s):  
Romulo P. Lollato ◽  
Bruno M. Figueiredo ◽  
Jagmandeep S. Dhillon ◽  
Daryl B. Arnall ◽  
William R. Raun
Keyword(s):  
Grain Yield ◽  
Wheat Grain ◽  
Long Term Experiments ◽  
Grain Nitrogen ◽  
K Fertilization

Elevated Atmospheric CO2 Concentration Has Limited Effect on Wheat Grain Quality Regardless of Nitrogen Supply

2020 ◽  
Vol 68 (12) ◽  
pp. 3711-3721 ◽  
Author(s):  
Markus Dier ◽  
Liane Hüther ◽  
Waltraud X. Schulze ◽  
Martin Erbs ◽  
Peter Köhler ◽  
...  
Keyword(s):  
Grain Quality ◽  
Co2 Concentration ◽  
Nitrogen Supply ◽  
Atmospheric Co2 ◽  
Wheat Grain ◽  
Limited Effect ◽  
Elevated Atmospheric Co2 ◽  
Atmospheric Co2 Concentration
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