Deficiency or toxicity of micronutrients? First study the pH, then the chelates

Publicatiedatum: 10-03-2015

When plants suffer from deficiency or toxicity of micronutrients, growers have to study first the pH of the soil or substrate and then the use of the right chelates. That’s the conclusion of the third webinar of Haifa Group about advanced fertilization.

Micronutrients play a major role in the metabolism of plants. Deficiency or toxicity lead to growth reduction, discoloration and changed shape of the plant. The availability of micronutrients to the roots of plants is extremely depending on the pH of the soil or substrate, says Prof. Leo Marcelis of Wageningen University during the third Haifa-U webinar: “Of course the availability depends on the concentration of the micronutrients. But the concentration is only half the story.”

Use chelates
When plants suffer from deficiency or toxicity of micronutrients, growers have to study first the pH. Most of the micronutrients are best available at a pH between 4.5 and 5.5. Growers can improve the availability of micronutrients by using chelates. However, the stability of the chelates is also pH dependent and differs per microelement. Therefore, a proper fertilization is a mix of the pH, the use of the right chelates and of course the concentration of the micronutrients.

See what you missed
The webinar about optimizing color and appearance was the third webinar in a series of four. Following the success of the first two webinar, the participants rated this second webinar with an 8,1 (on a scale of 1 to 10). 99% of the viewer’s declared that the webinar was useful. You can watch this webinar – and also the first two webinars - at our Haifa Group YouTube-chanel.

Sign in for last webinar
On April 15th, 2015 Haifa Group presents the last webinar about advanced fertilization, titled: Optimizing Climate in relation to nutrition and vice versa, with special attention to pH and EC.

The webinar is free of charge. You can sign in at.

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