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

Every year, many truck farmers face the fact,that the bow 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, much 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 inside the onionfeathers long longitudinal strokes, similar to whitish stripes. And adult individuals eat holes, around which white spots form as the sheet dries up. As a result of these pests, the tips of the onion feathers turn yellow, the feather itself curls and dries. Winter beetles can spend in unharvested onion or the top layer of the soil. Therefore, it is recommended to destroy the remains of onions. If possible, carry onion each year for 200-300 meters of onion crops, 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 a feather yellow on a bow? 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 decay, and the plant is easily pulled out of the ground. As we see, signs of pest damage are different from previous ones, so you can diagnose which ones 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 onion next to the carrots, your smell of plants will drive away from each other pests. Do not leave plant residues in place. You can sprinkle beds with onion ash, makhorka 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?pest damage not? The most common reason is the lack of nitrogen. Heavy rains can cause nitrogen compounds to leave with the water in the lower layers of the soil, from which they can not reach the roots of the onion. Therefore, it is recommended to feed onions with nitrogen fertilizers.

Now we know enough to determinethe correct reason why the feather 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 reason for their appearance, so that the harvest is successful.