The DRIS for interpretation of coastal bermudagrass analysis
作者:
M. L. Tarpley,
D. L. Robinson,
B. K. Gustavson,
M. M. Eichhorn,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1985)
卷期:
Volume 16,
issue 12
页码: 1335-1348
ISSN:0010-3624
年代: 1985
DOI:10.1080/00103628509367691
出版商: Taylor & Francis Group
关键词: bermudagrass;DRIS;mineral analysis;nutrient balance;plant nutrition;soil fertility
数据来源: Taylor
摘要:
Diagnosis and Recommendation Integrated System (DRIS) norms for N, P, K, Ca, Mg, and S were developed for three high‐yield Coastal bennudagrass populations that were selected from soil fertility studies that contained six rates each of N, P, and K. Norms from the high‐yield population that was based on a single yield level at a given harvest date were considered most suitable. The relative importance of criteria used to select suitable diagnostic parameters was discussed along with composition of index equations. The norms developed from Coastal bennudagrass grown on anAquic Fragiudalfsoil in south Louisiana accurately predicted yield responses to N, P and K applications at that location and to P, S, and Mg applications onTypic Paleudultsoils in north Louisiana. A computer generated DRIS balance chart was designed to provide a visual interpretation of individual sets of DRIS indices.
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