How to fertilize onions? Onion cultivation methods and sowing time

 How to grow onions? To increase onion yields, stages such as pest control, fertilizer and water management methods, and variety management methods are very important. Onions are highly nutritious and taste very good. What should be noted when growing onions? Let's take a look below.

  I. Planting time

  Whether the onion planting time is chosen properly has a huge impact on onion yield, so you must pay great attention when choosing the planting time. Although onions can be planted all year round, if you want the onions you grow to be high-yielding and high-quality, it is best to plant them in August and September. At this time, the temperature in most regions is generally around 20 to 25 degrees, which is the most suitable for onion germination and growth.

  II. Seed selection

  When it comes to seed selection, everyone knows that you must choose high-quality varieties, so how do you choose? First, we must understand the local onion planting situation and see how the varieties they choose perform and whether the yield is high. Second, we must analyze the market to see whether growing this onion variety is competitive. After choosing the variety to plant, we must select high-quality seeds from them. We mainly carefully observe whether the seed color is bright, whether the seeds are plump, and whether there are diseases or pests. If not, then it is fine.

  III. Irrigation

  Before planting, we must first water the soil once to ensure the soil moisture. Second, when the onions grow three leaves, they must be watered. Onions need a certain amount of water during their growth period and cannot be too dry, otherwise the onions below will not grow large, and the onions that emerge will also lack moisture. Generally, we water once every week, but note that in winter you must never irrigate, otherwise the onions will rot.

  IV. Fertilization

  Fertilization is a very important stage in onion cultivation, so special attention must be paid to it. If the fertilizer is used incorrectly or the amount is incorrect, it will cause irreparable damage to onion growth. Where conditions allow, it is best to mainly use organic fertilizer or organic decomposed fertilizer, with an appropriate amount of organic fertilizer as a supplement. On average, one mu requires about two thousand jin of fertilizer, of which the amount of organic fertilizer is about three hundred jin. Second, onions need sufficient nutrients during their growth period, so we should apply fertilizer appropriately according to the growth condition of the onions, and at the same time choose what kind of fertilizer to topdress according to the actual situation.

  V. Diseases and pests

  The most common diseases and pests of onions are downy mildew, bacterial wilt, and onion maggot. The control methods for downy mildew and bacterial wilt are generally spraying with chlorothalonil or Bordeaux mixture, while for onion maggot we can irrigate the field, because onion maggot is very afraid of water and will flee or even drown.