A preliminary diagnosis and recommendation integrated system (DRIS) model for diagnosing the nutrient status of sweet potato (Ipomea batatas)

Ramakrishna, A., Bailey, J. S. and Kirchhof, G. (2009) A preliminary diagnosis and recommendation integrated system (DRIS) model for diagnosing the nutrient status of sweet potato (Ipomea batatas). Plant and Soil, 316 1-2: 107-116. doi:10.1007/s11104-008-9763-5


Author Ramakrishna, A.
Bailey, J. S.
Kirchhof, G.
Title A preliminary diagnosis and recommendation integrated system (DRIS) model for diagnosing the nutrient status of sweet potato (Ipomea batatas)
Formatted title
A preliminary diagnosis and recommendation integrated system (DRIS) model for diagnosing the nutrient status of sweet potato (Ipomea batats)
Journal name Plant and Soil   Check publisher's open access policy
ISSN 1573-5036
0032-079X
Publication date 2009-03-01
Year available 2008
Sub-type Article (original research)
DOI 10.1007/s11104-008-9763-5
Volume 316
Issue 1-2
Start page 107
End page 116
Total pages 10
Place of publication Dordrecht, Netherlands
Publisher Springer Netherlands
Language eng
Subject C1
829899 Environmentally Sustainable Plant Production not elsewhere classified
050302 Land Capability and Soil Degradation
Abstract Critical leaf nutrient concentrations have often been used to diagnose the nutritional causes of crop underperformance. Unfortunately, these diagnostic criteria are not available for mature, tuber-bearing sweet potato plants (the word ‘tuber’ being used to describe a swollen root rather than a swollen stem). The Diagnosis and Recommendation Integrated System (DRIS), however, provides a reliable means of linking leaf nutrient concentrations to the yield of sweet potato tubers, and may be developed for this crop using existing data from regional crop surveys. In the present study, tuber yield and leaf nutrient concentration data from a survey of sweet potato gardens conducted in the Papua New Guinea (PNG) highlands in 2005 were used to establish DRIS N, P, K, and S norms and statistical parameters for sweet potato. Although the database was relatively small, the norms derived for nutrient ratios of key biological significance, i.e. N/S and K/N, were within the expected narrow ranges for higher plants, giving credibility to both the database and the DRIS model. Data from future surveys and field trials may subsequently be used to enlarge the database allowing the refinement of model parameters and hopefully an expansion of diagnostic scope to include other macro and micro-nutrients. As it stands, though, this preliminary DRIS model for sweet potato is possibly the best diagnostic tool currently available for evaluating the N, P, K and S statuses of sweet potato crops in the pacific region.
Keyword Diagnosis and recommendation integrated system
Papua New Guinea highlands
Preliminary DRIS norms and CV’s
Tuber yield
Sweet potato
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Agriculture and Food Sciences
ERA 2012 Admin Only
 
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Created: Thu, 16 Apr 2009, 04:15:53 EST by Emma Cushworth on behalf of School of Land, Crop and Food Sciences