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EVALUATION AND CONTROL OF THE NUTRITIONAL STATUS OF CEREALS: III. METHODS OF DIAGNOSIS AND YIELD PROGNOSIS

JENS MØLLER NIELSEN and BODIL FRIIS-NIELSEN
Plant and Soil
Vol. 45, No. 3 (DECEMBER 1976), pp. 647-658
Published by: Springer
Stable URL: http://www.jstor.org/stable/42947038
Page Count: 12
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EVALUATION AND CONTROL OF THE NUTRITIONAL STATUS OF CEREALS: III. METHODS OF DIAGNOSIS AND YIELD PROGNOSIS
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Abstract

Methods of quantitative diagnosis of the nutritional status of the young plant and quantitative prognosis of final yield were based on preliminary models constructed by using selected results ('pure'-effect data) from pot experiments with oats and spring wheat. The bases of the models — a fixed dry matter weight level of aerial parts of the plant and absolute and relative reference values — and the procedure by using the models were tested by relationships between predicted and obtained final yields. Highly significant correlation coefficients > 0.9 (p < 0.001) were found.

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