Cucumber, belonging to the family Cucurbitaceae, comes from India.He therefore heat, light and hygrophilous.In the process of growing, many gardeners, despite meticulous care, puzzling problem of yellowing leaves.The reasons for this can be many.
yellow leaves of cucumber in the defeat of the most terrible diseases - downy mildew.It develops quickly if the humidity increased, especially in cold weather.On the upper side of the adult leaves near the veins appear yellowish oily stains, and on the lower side there is a white-purple patina.Over time, these leaves, starting with the spots dry up.The rapidity of the process may be such that within a week the impression that occurred late autumn.About fruiting it can not go.
Once signs of the disease are detected, you should stop watering, ventilate the greenhouse, the soil under the cucumbers to fill something a drying, for example, chalk or ash leaves with spots to remove and burn.Healthy leaves should be sprayed with bright pink solution of potassium permanganate, to stop the development of pathogens.
more often in greenhouses covered by Bacteriosis disease (cucumber).Yellow leaves first angular spots, which later dry up.On the bottom side of leaves visible pink liquid droplets.Similar drops are detected in the murky sores fruit.The disease progresses rapidly in wet weather.We know that cucumbers do not like drafts, but need to constantly ventilate the greenhouse because of bacteriosis and stem rot, they suffer even more.
As soon as the leaves turn yellow in the cucumber, they need to be sprayed with garlic extract (200 g of crushed leaves and arrows filled 5 liters of water and insist 4:00).Watering in the greenhouse to minimize, to feed the infusion of various weeds or manure (fresh), in addition to potassium fertilizer.You can treat the sick plants Bordeaux mixture, but then for 20 days to eat the fruit is safe to eat.
cucumber leaves turn yellow spots, getting yellow-green in color, with a deficiency of micronutrients.It's the least of all evils.They need to feed a special fertilizer, diluted according to instructions.Do this preferably in the evening, after watering.
if damaged spider mites first lighter, then the leaves turn yellow in the cucumber and later die.These insects are very small, visible only under a microscope.You can get rid of them by processing garlic extract, provided that it will fall on the underside of the leaves.Using chemistry undesirable as cucumbers become dangerous for receiving food for almost 3 weeks.
yellow leaves on cucumber and black aphid attack.This usually occurs in August.Against her better use of garlic, pine needles, green soap and other home remedies.The body of the aphid is very gentle and even water, heated to 50 0 C, lose it, and will not harm the plant.
As you can see, the reasons why the leaves turn yellow in the cucumber, a lot, and ways to combat this phenomenon more.At the time the measures to help cope with any adversity, without which it does not pass any holiday season.Be attentive to their planting and they will thank you abundant harvest.
