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.
引用
收藏
页码：1 / 6
页数：5
相关论文
共 38 条
  • [1] Davidson DJ(1990)Preanthesis tiller mortality in spring wheat Crop Sci 30 832-836
  • [2] Chevalier PM(1994)Leaf net CO Crop Sci 34 432-439
  • [3] Frederick JR(1995)-exchange rate and associate leaf traits of winter wheat grown with various spring nitrogen fertilization rates Agron J 87 527-533
  • [4] Camberato JJ(1985)Water and nitrogen effects on winter wheat in the southeastern coastal plain: II. Physiological responses Agron J 77 495-499
  • [5] Frederick JR(1992)Grain yield and yield components of soft red winter wheat as affected by management practices Soil Sci Plant Anal 23 687-697
  • [6] Camberato JJ(1990)Use of a chlorophyll meter to evaluate the nitrogen status of dryland winter wheat Commun Ann Bot 66 425-436
  • [7] Frederick JR(1996)Decline in percentage N of C3 and C4 crops with increasing plant mass Agronomie 16 231-246
  • [8] Marshall HG(1993)Nitrogen uptake capacities of maize and sorghum crops in different nitrogen and water supply conditions Agron J 85 987-990
  • [9] Follet RH(1992)Adjustment for specific leaf weight improves chlorophyll meter's estimate of rice leaf nitrogen concentration Agron J 84 59-65
  • [10] Follet RF(1983)Use of a chlorophyll meter to predict sidedress nitrogen requirements for maize Plant Physiol 71 7-14
1234