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Relation of Carotene and Crude Protein Content of Grasses
Author(s) -
Keirstead Lloyd G.
Publication year - 1945
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1945.00021962003700030008x
Subject(s) - citation , relation (database) , agricultural experiment station , content (measure theory) , carotene , computer science , agronomy , agriculture , mathematics , library science , food science , history , biology , database , archaeology , mathematical analysis
R between carotene and crude protein content have been noted by various workers. Studies on grasses may be divided into those in which the grass was cut completely at intervals, as in lawn mowing, and maturity studies where the grass was cut at different stages' of growth. In the lawn mower type of sampling, Thomas and Moon reported a correlation coefficient for carotene with crude protein of plus 0.530 for 46 samples. Moon in a further study obtained an r value of plus 0.543 where no fertilization was used, plus 0.233 f° nitrate of soda treatment, and plus 0.332 for sulfate of ammonia treatment. Moon also gives an r value of plus 0.89 in a maturity study on mixed herbage. Smith and Wang gave an r value of plus 0.85 for 63 samples of rye grass, white clover, cocksfoot, and timothy. The correlation coefficient (r) has been computed for buffalo grass, Buchloe dactyloides, and blue grama, Bouteloua gracilis, using the