After starting the program, turn the wheel to select a culture. Click the “Proceed to describe the symptoms” button and select which type of lesions described is most consistent with the picture that you see on your plants. Next, clarify the symptoms, also choosing the type of lesion that matches the one observed on the field (guided by the description and supporting photo). As a result, you will receive an opinion on the most likely nutritional deficiency in your field. In the last window you will see a more detailed description (how with a given deficiency the symptoms are localized in the plant or what additional signs of deficiency should be observed). If the picture on your field does not match the described one enough, go back 1-2 levels and check if there are other buttons that are more suitable for your situation (for example, on rapeseed there are two fairly similar groups of symptoms: 1 “the leaves turn yellow or orange red color "and 2." yellow, some varieties have red, lower leaves. "In such cases, it is better to check both options. It is important to understand that with this program you can determine only probable nutritional deficiencies. Symptoms of various nutritional deficiencies are often They are too similar to each other, or even with signs of manifestation of infectious lesions. Reliable data can only be obtained through laboratory analysis - tissue diagnostics, phytopathological analysis. But, since such diagnostics require time for sampling and analysis, this program is good an operative decision-making tool (in the presence of characteristic symptoms, it is very correct to carry out operational processing even focusing only on external symptoms, and tissue diagnostics and will help to finally approve the further action plan).
