Preliminary NPK foliar diagnostic norms for wheat
作者:
M. E. Sumner,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1977)
卷期:
Volume 8,
issue 2
页码: 149-167
ISSN:0010-3624
年代: 1977
DOI:10.1080/00103627709366709
出版商: Taylor & Francis Group
关键词: Plant analysis;mineral nutrition;physiological diagnosis;leaf composition;wheat;foliar diagnosis
数据来源: Taylor
摘要:
Foliar diagnostic norms for NPK in wheat leaves derived using Beaufils’ Diagnosis and Recommendation Integrated System (DRIS) are presented. These norms were calculated from published and unpublished data of various workers who presented leaf composition with corresponding yields. The preliminary norms appear to be applicable to wheat irrespective of variety and age at which the leaf sample is taken. These norms are able to correctly diagnose the requirements of the crop more often than those based on the critical or sufficiency level approach.
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