DETERMINATION OF THE NITROGEN STATUS OF IRRIGATED POTATO CROPS .2. A SIMPLE ON FARM QUICK TEST FOR NITRATE-NITROGEN IN PETIOLE SAP

被引：33

作者：

WILLIAMS, CMJ ^{[1
]}

MAIER, NA ^{[1
]}

机构：

[1] DEPT AGR S AUSTRALIA,NORTHFIELD RES LABS,ADELAIDE,SA 5001,AUSTRALIA

来源：

JOURNAL OF PLANT NUTRITION | 1990年 / 13卷 / 08期

关键词：

D O I：

10.1080/01904169009364130

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

This paper describes the development and calibration of a simple on farm quick test for sap nitrate-N in potatoes (Solanum tuberosum L). A description is given of the plant tissue to sample, bulk sampling procedures, sap extraction, dilution and measurement of sap nitrate-N. Thirty petioles of the youngest fully expanded leaves per plot were collected and bulked. Segments 10–20 mm long were excised from near the centre of each petiole, crushed and the sap collected. One mL of this sap was diluted a hundred-fold. The concentration of nitrate-N in sap was determined by immersing a test strip into the 1:100 diluted sap extract and then. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：985 / 993

页数：9

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