Reasons of yellowing of onions feather a little. Perhaps - it is weather patterns or the wrong care for culture. Also it can be lack of any nutritious element of the soil. And maybe, onions were attacked by the wrecker or disease.
It is required to you
- - table salt;
- - potassium permanganate;
- - tobacco dust;
- - ashes;
- - mustard powder;
- - ground burning pepper;
- - fungicide.
Instruction
1. To wreckers who settle on plant and promote yellowing of onions feather, the onions fly belongs. Larvae of onions fly settle in fabrics of plant and dilute their structure. The onions feather turns yellow and dries. It is easy to recognize the wrecker and to get rid of him. Will help to save plants from onions fly the carrots plants planted close. It is also possible to water the soil under plants solution of table salt (spoon on glass of water). Pollination of the soil between plants rustic tobacco helps. There are also chemical medicines which destroy and frighten off onions fly. For prevention of appearance of the wrecker you should not plant onions several years in a row on one place.
2. Other wrecker – onions skrytnokhobotnik – also forces feathers to turn yellow at the basis. Larvae and adult individuals eat the courses in feathers and damage feather fabrics. To be protected from the wrecker in the future, it is necessary to destroy all remains after cleaning of onions. During vegetation if feathers have begun to turn yellow, carry out earthing up and strew the soil with ashes, mustard powder or powder of burning pepper.
3. Stem nematode – the most frequent reason of yellowing of feather. This is worm who settles in bulb and eats its juice. At the same time leaves turn yellow, fade and dry up. And the bulb decays and becomes unsuitable in food. Before landing of seed onions it is necessary to carry out its disinfecting by potassium permanganate solution. It is necessary to get the grades resistant to this wrecker.
4. From diseases the yellowing of feather is promoted by collum decay. On bottom of bulb the white velvet-like raid is formed. The fungus can be in the soil and live there within six years. Becomes more active if the soil rehumidified. It is necessary to buy the grades resistant to this disease, to process bulbs before landing by fungicide and not pereuvlazhnyat the soil.
5. The turning yellow feather can testify to lack of the soil of nitrogen. It is possible to prevent and stop the beginning yellowing, having added to the soil missing element in the form of sulfate of ammonium or saltpeter. From organic chemistry it is good to use infusion of mullein and urea.
6. The feather of onions can dry and turn yellow because of adverse weather conditions, for example, of drought. Heavy steady rains promote yellowing of onions feather too. It is necessary to water onions it is abundant, but is rare, not to fill in at all and to periodically loosen the soil in row-spacings for the best access of air.