Use of a scoring technique to assess the effect of field variability on yield of pearl millet grown on three alfisols in Niger.

M. Gandah, J. Bouma, J. Brouwer, N. van Duivenbooden

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Within-field spatial variability of pearl millet (Pennisetum glaucum) was studied at three different sites on Alfisols in Niger. Grain yields in fields on a North-South gradient were 8-383, 2-1343, 7-815 kg/ha, with a coefficient of variation of 61, 55, and 53%, respectively. Variability was explained by soil chemical factors for only 5 to 28%. A simple method of scoring millet growth for individual hills a few weeks before harvest was tested by measuring yield variability in a field as an alternative for expensive soil chemical analyses. The median score value explained 25, 67, and 8% of the variability for the same gradient, respectively. As a verification step, map pattern comparisons of millet grain and straw yields with median score values gave low taxonomic distances (0.01-1.7), indicating significant similarities in variability. The hill scoring method is an appropriate tool to identify millet grain and straw yield variability.
Original languageEnglish
Pages (from-to)39-51
JournalNetherlands Journal of Agricultural Science
Volume46
DOIs
Publication statusPublished - 1998

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