Nitrogen uptake and chlorophyll meter measurements in Spring Wheat

被引：0
|
作者：
Ivan Vidal
Luis Longeri
Jean Marie Hétier
机构：
[1] Universidad de Concepción,Facultad de Agronomía, Dpto. de Suelos, Chillán
[2] Cirad AMIS,undefined
来源：
Nutrient Cycling in Agroecosystems | 1999年 / 55卷
关键词：
chlorophyll meter; irrigation; LAI; nitrogen; Spring Wheat;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A Spring Wheat crop was grown using three irrigation levels and nitrogen rate applications to evaluate chlorophyll meter measurements as a possible nitrogen nutrition index for modelling. These measurements yielded the most reliable indications at Zadoks GS45. The lower limit indicating severe nitrogen deficiency in the leaves was approximately 35 SPAD units while the upper limit of 45 SPAD units, indicated an excess consumption.
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页码：1 / 6
页数：5
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