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The Use of Half‐plants in a Balanced Incomplete Block in Investigating the Effect of Calcium, Phosphorus, and Potassium, at Two Levels Each, on the Production of Hard Seed in Crimson Clover, Trifolium incarnatum 1
Author(s) -
James Edwin,
Bancroft T. A.
Publication year - 1951
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/agronj1951.00021962004300020010x
Subject(s) - phosphorus , production (economics) , citation , library science , state (computer science) , mathematics , horticulture , agricultural science , agronomy , chemistry , computer science , environmental science , biology , economics , algorithm , organic chemistry , macroeconomics
Efect of Calcium, Phosphorus, and Potassium, at Two Levels Each, on the Production of Hard Seed in Crimson Clover, Trifolium incarnatum EDWIN JAMES AND T. A. BANCROFT T HE interest in crimson clover Trifolium incarnatum in the South has been stimulated by the selection of locally adapted strains with the ability to volunteer over an indefinite number of years. It has been commonly accepted in agronomic circles that the volunteering characteristics of these strains can be attributed to the production of larger percentages of hard seeds than nonvolunteering strains. The problem of impermeability of the seeds of the leguminoseae has been widely investigated by many workers (2, 3, 4, 6, 7, 8, 9, 10, 11,12, 13, 15, 16). The lack of agreement among the investigators of this problem and the failure of most to demonstrate the inheritance of seed coat impermeability suggested the desirability of investigating the effect of some environmental factors. An earlier experiment by James (8) showed that a high level of calcium in the soil led to a significantly higher percentage of impermeability in the seed crop. The design (14) used in this experiment lacked precision in that the interactions between the several fertilizer constituents were lost. The experiment was repeated to get more information on nutrient effects.