Copper
(Cu)
Very
Fairly
Moderately
Cu | ||
---|---|---|
Carrot | ||
Spring Barley | ||
Winter Barley | ||
Winter Wheat | ||
Lettuce | ||
Cabbage | ||
Cucumber | ||
Grain Maize | ||
Silage Maize | ||
Sugar Beet | ||
Tomato | ||
Apple | ||
Cherries | ||
Grape Vine | ||
Pear | ||
Potato | ||
Strawberry | ||
Sunflower | ||
Winter Rapeseed | ||
Fiber Flax |
Copper deficiency is often difficult to detect in early growth stages but is visible in later growth stages, shown by wheat infertility for example. Symptoms include a white discoloration of the tips of the youngest leaves, followed by disorders in spiking that can lead to empty ears. In general, the deficiency mainly affects newly developed tissues, due to the low mobility of copper in the plant.
Excess copper is dangerous for sheep. Even for crops that are demanding in copper such as cereals, excess can be detrimental, especially for durum wheat.
Copper is often present in the form of sulphide in magmatic rocks. However, concentration in rocks is low and therefore not exploited. Copper deposits have been exploited by humans for more than 4,000 years. Foliar application is recommended for plant nutrition, which allows efficient use of the units provided, as well as a responsible management of this resource. In this way, it can be applied to sensitive crops at the right time in a precise manner.
EDTA extraction effectively determines plant available Cu in the soil solution. Consider the following thresholds:
LAT Nitrogen Austria GmbH
St.-Peter-Strasse 25
4021 Linz, Austria