• Agmin
    • About Us
    • Product Benefits
  • Silicon
  • Products
  • Store Locator
  • Articles
  • Contact
    • Request Price List
Agmin

our latest publications

Nutrient Deficiencies in Plants

25/6/2016

0 Comments

 
Common Visual Symptoms
While it can be hard to ascertain the exact nutrient deficiency when multiple symptoms are present, if your crop begins to exhibit signs of nutrient deficiencies it is a good idea to have plant tissue analysis undertaken for a definite result.

A list of the best known and most useful of the visual indications of plant nutrient deficiencies are detailed below, expressed in a concise and summarized form:

1, The whole plant appears affected, being unthrifty; the older leaves die prematurely.
  • Pale-green colours and chlorosis: Nitrogen.
  • Dark-green colours with reddish and purplish tints: Phosphorous.

2, The older or lower leaves are abnormal.
  • Mottled (marbled) or chlorotic leaves which may develop red colours in some plants; later, margins and tips turn upwards and necrotic areas develop: Magnesium.
  • If the mottled or chlorotic leaves show necrotic spots and margins (leaf-scorch): Potassium.
  • If the leaves are small, malformed, unduly slender, are mottled or chlorotic with dead spots and margins developing, the shoots may be short, giving a rosetted appearance: Zinc.

3, The newer or bud leaves are abnormal; terminal bud dies.
  • Young leaves at terminal bud die back at tip and margins; chlorosis and necrosis develop sometimes from base of leaf: Calcium.
  • Young leaves become light-green and chlorotic and later develop twisting; reddish discolouration may occur; stems may crack and roots become cankerous: Boron.
    ​
​4, Terminal bud does not die.
  •  Young leaves slightly chlorotic to dark-green, but wilt and leaf tip dies; summer die-back or wither-tip in deciduous fruit trees: Copper.
  • ​Interveinal chlorosis and spotting, but even the smallest veins remain green; bronzy-yellow colour may develop; (youngest leaves of the shoots may be green in contrast with iron deficiency): Manganese.
  • General chlorosis of young leaves including veins (resembles nitrogen deficiency): Sulphur.
  • Young leaves are chlorotic, but larger veins are green; chlorosis spreads and leaves become light-yellow in colour: Iron.
A leaf showing signs of magnesium deficiency
A cabbage showing signs of phosphorous deficiency
A tomato leaf showing signs of nitrogen deficiency
An orange leaf showing signs of potassium deficiency
Peach leaves showing signs of zinc deficiency
Manganese deficiency in peas
Iron deficiency in avocado leaves
0 Comments

Your comment will be posted after it is approved.


Leave a Reply.

    Newsletter

Subscribe

Contact Us

Call: 1800 154 433
Fax: 03 5248 1603

Email: service@agmin.com.au

Social media

Like us on facebook!
Copyright © 2021 Agmin Chelates Pty. Ltd. All right reserved.
  • Agmin
    • About Us
    • Product Benefits
  • Silicon
  • Products
  • Store Locator
  • Articles
  • Contact
    • Request Price List