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When we refer to diseases, some not so experts often confuse it with pests, similarly it is necessary to limit 
what pests are those groups of arthropods (insects or mites) that in our crops make theirs to survive feeding 
of the nutrients of the plant, on the other hand as well as the humans we get sick, also the plants suffer from pathogens that in some occasions tend to get entangled with the needs of nutrients that it requires. However I will tell you how to recognize and solve these common diseases
. Among them we have:
- OIDIUM: it's a mushroom very common that can affect a set of crops, but most of the time it affects the species cucurbits (zucchini, pumpkin, cucumber, melon), its symptoms appear in the form of white spots and with the step that is advancing the disease turns into a white powder, we can locate it in the stem or in the leaves although in some cases in the fruits; so it hinders the process of photosynthesis and causes the plant to turn yellow and dry .
- Solution: There are contact fungicides such as sulfur powder, just by spraying the powder on the plant in the affected area, you will see how it disappears with time. (follow fungicide instructions).
- POWDERY MILDEW: this sickness is caused by different fungi that parasitize vegetables through rain or excessive watering, so it affects the species solanáceas (eggplants, tomatoes, peppers and potatoes), the symptoms are very different to all at the edges of the leaves have to turn yellow-brown, going to wither.
- Solution: There are several ways to eliminate this fungus, one of them can be eliminated by pruning in the affected area as long as it is not harmful to the plant, on the other hand in agroecological stores we get a fungicide recognized for its preventive as well as corrective function that we can apply in these cases,we know him as “Trichoderma”.
- RUST: it's a mushroom easy to identify by the orange color on the underside of the leaves and by the beam of the leaf we get spots or point of yellow color; can affect plants (onions, roses, legumes).
- Solution: this mushroom when it appears can not be solved, but if a previous control is applied in the crops to avoid apparitions, so the same treatments are applied for the OIDIUM y POWDERY MILDEW, so it is recommended to do this type of fumigation in rainy times to avoid future contamination.
- FUSARIUM: a fungus of headaches for any farmer; this disease invades and deteriorates the vascular system of the plant, so it withers and dies, that is, the fungus penetrates the roots of plants and is mistaken for a rot by excess water, the first symptom that presents is a yellowish color and finally a wilting of the leaves due to lack of nutrients, on the other hand this fungus is activated by excess moisture given that if it is not disinfected or treated well the land we will find (Click here to know how to make a quality fertilizer), It is also important to know can affect all plant species.
- Solution: It is recommended to use fungicides as “Trichoderma” for the prevention of this disease, in a case of the onset of this disease we must immediately eliminate the affected plant so that this pathogen does not spread , although in most cases it is very difficult to eliminate this disease once it has appeared.
https://www.gardeningknowhow.com/plant-problems/disease/controlling-fusarium-wilt.htm https://en.wikipedia.org/wiki/Rust_(fungus) https://www.almanac.com/pest/rust-plant-disease http://www.cannagardening.ca/oidium_combat_strategies https://en.wikipedia.org/wiki/Powdery_mildew https://www.almanac.com/pest/powdery-mildew
