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Agrobiologic percentage method of evaluating fertilizer tests: I. Potash and tobacco

, : Agrobiologic percentage method of evaluating fertilizer tests: I. Potash and tobacco. Soil Sci 79(6): 467-473

Accumulated proof of the validity of the Mitscherlich-Baule yield equation as the sole authentic mathematical representation of the law of diminishing increments of yield in agriculture has rendered obsolete the conventional statistical methods of evaluating experiments in plant nutrition by analysis of variance. A simple graphical method has been devised wherein a "standard yield diagram" is used to determine the M.-B. equation that makes the best fit with the experimental data. The observed deviations of the experimental from the corresponding theoretical values are figured as percentages of the experimental values; the mean of these deviations is computed, which when subtracted from 100 gives directly the probability that the experimental results may be reproduced. Use of the new method is exemplified from field practice, wherein the two methods of evaluation were compared for dependability and range of information furnished.


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Fishchenko, A.Ia., 1978: Spontaneous external fistula of the gallbladder. Klinicheskaia Khirurgiia: 68-69

Koretz, R.L., 2006: The devil is in the denominator. Gastroenterology 130(7): 2240-2; Discussion 2242

Barbiano di Belgiojoso, G.; Genderini, A.; Zanchetta, N.; Lazzarin, A.; Bertoli, S., 1988: AIDS in dialysis centers: an emerging risk?. Contributions to Nephrology 61: 254-265

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McDermott, R.; Fowler, J.; Christakis, N., 2014: Breaking Up is Hard to Do, Unless Everyone Else is Doing it Too: Social Network Effects on Divorce in a Longitudinal Sample. Divorce represents the dissolution of a social tie, but it is also possible that attitudes about divorce flow across social ties. To explore how social networks influence divorce and vice versa, we exploit a longitudinal data set from the long-run...

Cramer, H.; Lauche, R.; Hohmann, C.; Langhorst, J.; Dobos, G., 2013: Yoga for chronic neck pain: a 12-month follow-up. To assess the effects of a 9-week yoga intervention on chronic nonspecific neck pain 12 months after completion. Twelve-month follow-up of the pooled data of both arms of a randomized, controlled trial. Department of Internal and Integrative Medic...

Lazopulo, A.; Syed, S., 2017: A Computational Method to Quantify Fly Circadian Activity. In most animals and plants, circadian clocks orchestrate behavioral and molecular processes and synchronize them to the daily light-dark cycle. Fundamental mechanisms that underlie this temporal control are widely studied using the fruit fly Droso...