Delineating site-specific management zones for pH-induced iron chlorosis

T. Kyaw, R. B. Ferguson, V. I. Adamchuk, D. B. Marx, D. D. Tarkalson, D. L. McCallister

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Iron chlorosis can limit crop yield, especially on calcareous soil. Typical management for iron chlorosis includes the use of iron fertilizers or chlorosis tolerant cultivars. Calcareous and non-calcareous soil can be interspersed within fields. If chlorosis-prone areas within fields can be predicted accurately, site-specific use of iron fertilizers and chlorosis-tolerant cultivars might be more profitable than uniform management. In this study, the use of vegetation indices (VI) derived from aerial imagery, on-the-go measurement of soil pH and apparent soil electrical conductivity (EC a) were evaluated for their potential to delineate chlorosis management zones. The study was conducted at six sites in 2004 and 2005. There was a significant statistical relationship between grain yield and selected properties at two sites (sites 1 (2005) and 3), moderate relationships at sites 2 and 4, and weak relationships at site 5. For sites 1 (2005) and 3, and generally across all sites, yield was predicted best with the combination of NDVI and deep ECa. These two properties were used to delineate chlorosis management zones for all sites. Sites 1 and 3 showed a good relationship between delineated zones and the selected properties, and would be good candidates for site-specific chlorosis management. For site 5, differences in the properties between mapped zones were small, and the zones had weak relationships to yield. This site would be a poor candidate for site-specific chlorosis management. Based on this study, the delineation of chlorosis management zones from aerial imagery combined with soil ECa appears to be a useful tool for the site-specific management of iron chlorosis.

Original languageEnglish (US)
Pages (from-to)71-84
Number of pages14
JournalPrecision Agriculture
Volume9
Issue number1-2
DOIs
StatePublished - Apr 1 2008

Fingerprint

Hypochromic Anemia
chlorosis
Iron
iron
Soil
iron fertilizers
Imagery (Psychotherapy)
Fertilizers
soil
Electric Conductivity
cultivars
calcareous soils
electrical conductivity
soil pH
crop yield
grain yield

Keywords

  • Iron chlorosis
  • Management zone delineation
  • Soil pH

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Kyaw, T., Ferguson, R. B., Adamchuk, V. I., Marx, D. B., Tarkalson, D. D., & McCallister, D. L. (2008). Delineating site-specific management zones for pH-induced iron chlorosis. Precision Agriculture, 9(1-2), 71-84. https://doi.org/10.1007/s11119-008-9059-z

Delineating site-specific management zones for pH-induced iron chlorosis. / Kyaw, T.; Ferguson, R. B.; Adamchuk, V. I.; Marx, D. B.; Tarkalson, D. D.; McCallister, D. L.

In: Precision Agriculture, Vol. 9, No. 1-2, 01.04.2008, p. 71-84.

Research output: Contribution to journalArticle

Kyaw, T, Ferguson, RB, Adamchuk, VI, Marx, DB, Tarkalson, DD & McCallister, DL 2008, 'Delineating site-specific management zones for pH-induced iron chlorosis', Precision Agriculture, vol. 9, no. 1-2, pp. 71-84. https://doi.org/10.1007/s11119-008-9059-z
Kyaw T, Ferguson RB, Adamchuk VI, Marx DB, Tarkalson DD, McCallister DL. Delineating site-specific management zones for pH-induced iron chlorosis. Precision Agriculture. 2008 Apr 1;9(1-2):71-84. https://doi.org/10.1007/s11119-008-9059-z
Kyaw, T. ; Ferguson, R. B. ; Adamchuk, V. I. ; Marx, D. B. ; Tarkalson, D. D. ; McCallister, D. L. / Delineating site-specific management zones for pH-induced iron chlorosis. In: Precision Agriculture. 2008 ; Vol. 9, No. 1-2. pp. 71-84.
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