SPATIAL VARIABILITY OF NITRATE IN IRRIGATED COTTON: I. PETIOLES.

J. A. Tabor, A. W. Warrick, D. A. Pennington, D. E. Myers

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Geostatistics, specifically the use of variograms and kriging, was used to determine the spatial variability of nitrates in cotton (Gossypium hirsutum L. ) petioles. Petiole nitrates were shown to be spatially dependent in seven commercial fields. This spatial dependence can range from insignificant, where the inherent variability of sampling and analysis is relatively large, to strongly dependent. Data from a 360 by 360 m grid indicated an anisotropy of spatial dependence. The variograms and kriged maps of petiole nitrates suggest a strong influence due to cultural practices such as direction of rows and irrigation.

Original languageEnglish (US)
Pages (from-to)602-607
Number of pages6
JournalSoil Science Society of America Journal
Volume48
Issue number3
DOIs
StatePublished - Jan 1 1984

ASJC Scopus subject areas

  • Soil Science

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