Biometrical Letters

ISSN:1896-3811

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Volume (54) Number 1 pp. 61-76

Marzena Iwańska 1, Zbigniew Laudański 2, Tadeusz Oleksiak 2

1Department of Experimental Design and Bioinformatics, Warsaw University of Life Science – SGGW, , Warsaw, Poland
2Plant Breeding and Acclimatization Institute – National Research Institute (IHAR-PIB), , Radzików, Poland

Evaluation of the impact of fertilizers and seed quality on winter wheat yield

Summary

The aim of the study was to evaluate the effect of mineral fertilization and seed quality on the yield of winter wheat in production conditions. This assessment is made in terms of the expected probabilities of success in relation to the yield of analyzed cultivars, taking into account the interaction of the factors considered. Analyses were performed on data from 3815 fields. The impact of fertilizers and seed quality was evaluated using logistic regression. Grain yield was transformed into a binomial variable, where values were divided into two classes, i.e. below the mean and above the mean. The results of the analysis proved a significant effect of fertilization rate, which was modified by different seed quality. The highest probability of obtaining yields above the mean was observed for pre-basic and basic seed quality at high fertilizer rates.

Keywords: logistic regression, odds ratio, survey research, winter wheat

DOI: 10.1515/bile-2017-0004

For citation:

MLA Iwańska, Marzena, et al. "Evaluation of the impact of fertilizers and seed quality on winter wheat yield." Biometrical Letters 54.1 (2017): 61-76. DOI: 10.1515/bile-2017-0004
APA Iwańska, M., Laudański, Z., & Oleksiak, T. (2017). Evaluation of the impact of fertilizers and seed quality on winter wheat yield. Biometrical Letters 54(1), 61-76 DOI: 10.1515/bile-2017-0004
ISO 690 IWAńSKA, Marzena, LAUDAńSKI, Zbigniew, OLEKSIAK, Tadeusz. Evaluation of the impact of fertilizers and seed quality on winter wheat yield. Biometrical Letters, 2017, 54.1: 61-76. DOI: 10.1515/bile-2017-0004
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