Why does the feather of a bow turn yellow and how can I cope with it?

Every year, many truck farmers are faced with the fact that the feather of the onion turns yellow. If you do not take measures in time, you can stay completely without harvest. Especially it worries people who grow onions in large quantities for sale. To choose a way to get rid of this scourge, you need to determine why the feather of a bow turns yellow. An incorrectly chosen method will not help save a crop, a large part of which may die.

So, why does the feather of a bow turn yellow? There are three main reasons that lead to this. Two of them are related to the work of pests. We are talking about onion secretivel and onion fly. How to determine who is spoiling the onions? It is necessary to inspect the damaged plants carefully.

The larvae of the secretive thistle eat on the inside of the onions long long strokes, similar to the whitish stripes. And adult individuals eat holes, around which white spots form as the sheet dries up. As a result of the activity of these pests, the tips of the onion feathers turn yellow, the feather itself twists and dries. Winter can be carried by beetles in unharvested onions or the top layer of the soil. Therefore, it is recommended to destroy the remains of onions. If possible, carry onion for 200-300 meters each year onion so that the beetle does not reach them. If the onion has already suffered from the pest, cut off the feathers, leaving only 3-4 cm. Loosen the soil more often, including between the rows.

Why does the pen in yellow turn yellow? The cause may be an onion fly. It can also suffer from garlic. If the onion is larval, it will soon turn yellow and fade. In this case, the onion fly also damages the bulbs, which then rot, and the plant is easily pulled out of the ground. As we see, the signs of pest damage are different from the previous ones, so you can diagnose which one to dispose of. In this case, you can recommend early planting of onions, the destruction of plants that are already damaged, deep plowing. Sow the onions next to the carrots, their smell of plants will drive away each other pests. Do not leave plant residues in place. You can sprinkle beds with onion ash, tobacco or tobacco dust. Based on popular experience, you can advise watering onions with saline solution (1 glass per bucket of water) three times, with an interval of 20 days.

Why does the feather of a bow turn yellow, if there are no signs of pest infestation? The most common reason is the lack of nitrogen. Heavy rains can lead to the fact that the nitrogen compounds will leave with water in the lower layers of the soil, from where they can not reach the roots of the onion. Therefore, it is recommended to feed onions with nitrogen fertilizers.

Now we know enough to determine the correct reason for why the bow of a bow turns yellow. If feathers do not have beetle larvae, but in fly bulbs, fertilize the beds with nitrogen containing fertilizers. And do not forget that by the end of July, the yellowing of the feathers is associated with the process of natural aging of the plant. If the onion began to turn yellow only during this period, it is not necessary to take any measures. The main thing is to recognize in time the unfavorable signs and establish the cause of their appearance, so that the harvest is a success.