식물생리학 양배추에 나타난 붕소결핍

목차

1. Introduction

2. Determining Boron Deficiency and Toxicity from RGR
2.1 Cellular Definition of Growth
2.2 Premise and Knowledge Relevant to "Growth"
2.3 Full-scale Experiment
2.4 Data Analysis

3. Visible Symptoms
3.1 Boron Deficiency: Internal Cracking or Rotting of Roots or Heart, and Distorted terminal leaves.
3.2 Boron Toxicity: Yellowing, Drying of Leaf Tissues at the Tip

4. Interlude: Boron Prevents Plants' Disease

본문내용

Boron, unlike sodium, is an essential element for plant growth. Boron is needed in relatively small amounts, and classified into "micro-nutrients." However, it does not mean that its importance is proportional to its required amounts. Rather, both deficiency and toxicity of boron have harmful effects on plants.

Boron deficiency does not usually show up in the leaves, so a deficiency may be hard to identify at first glance. The most common and distinctive symptom is internal cracking or rotting of the roots or heart. Less common symptoms involve death of the growing point (similar to calcium), slow growth, short stems and distorted terminal leaves. The interior of roots may rot, while the stems of Brassicas may become hollow.

If present in amounts appreciably greater than needed, it becomes toxic. For some crops, if 0.2 mg/L boron in water is essential, 1 to 2 mg/L may be toxic.

참고 자료

Boron Toxicity http://www.fao.org/
http://walkernewsdesk.wordpress.com/
http://www.smartgardener.com/plants/7440cabbagecabbage/diseases/562boron