The effect of nitrogen top dressing on yield and protein content of nitrogen-deficient cereals.
D. K. McBeath,J. A. Toogood +1 more
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TL;DR: Top dressings of ammonium nitrate were made during the growing season to crops of barley and oats showing symptoms of acute nitrogen deficiency as discussed by the authors, and the added nitrogen in the early stages of plant growth resulted in increased vegetative growth and increased yields.
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Abstract: Top dressings of ammonium nitrate were made during the growing season to crops of barley and oats showing symptoms of acute nitrogen deficiency. The addition of nitrogen in the early stages of plant growth resulted in increased vegetative growth and increased yields. Applications of nitrogen delayed until the shot-blade stage had little effect on yield, but substantially increased the protein content. The yield of protein per acre was increased with higher rates of fertilization, regardless of whether the effect of the added nitrogen was to increase yield or protein content.
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Citations
The effects of variety and nitrogen fertiliser on protein production in oats
Robert W. Welch,Yit Yuan Yong +1 more
TL;DR: Five spring oats comprising two European varieties and three North American varieties were selected on the basis of differences in grain protein content and grown in a field experiment with four nitrogen fertiliser treatments, giving marked increases in protein production.
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Response of spring wheat and barley to nitrogen, phosphorus and potassium
R. F. Bishop,C. R. MacEACHERN +1 more
TL;DR: Fertilizer trials with spring wheat and barley were conducted at a total of seven and nine locations, respectively, during a three-year period as discussed by the authors, and the results indicated that N, P and K at approximately 135, 39 and 37 kg/ha should be generally adequate.
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The nutritional value of increased levels of protein resulting from nitrogen fertilization of barley
TL;DR: Analytical data revealed that percentages of 9 essential amino acids in barley protein were approximately double the amounts reported by other analytical procedures.
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Evaluation of barley as a source of protein for chicks. I. Variety and nitrogen application in relation to protein content and amino-acid composition of the seed.
TL;DR: Lysine content was inversely proportional to crude protein content for barleys containing between 8 and 11% crude protein and, in consequence, within this range the yield of lysine/ton of grain was of the same order.
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The effect of nitrogen fertilization on the amino acid composition and nutritive value of cereals
TL;DR: A range of samples embracing 14 varieties from different localities within the United Kingdom, many grown with the application of different known levels of nitrogenous fertilizer, were submitted to proximate analysis, some analysed for total amino acid composition and some evaluated nutritionally in near-practical dietary mixtures with various protein concentrates as mentioned in this paper.
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References
Nitrogen fertilizers for spring barley and wheat
F. V. Widdowson,G. W. Cooke +1 more
TL;DR: In this article, it was shown that combine-drilled or broadcast top-dressing had little effect on the percentage of nitrogen in the grain; equivalent top-dressings in mid-May consistently increased nitrogen content.