How effective is trenching and topdressing for Welsh onions? You'll understand after reading this
How effective is trenching and topdressing for Welsh onions? Please read on. For a long time, many vegetable growers have been accustomed to trenching to apply a one-time topdressing for Welsh onions, but this is unscientific. This is because doing so not only easily cuts the roots of the Welsh onions, but also burns the young tender fibrous roots due to overly concentrated fertilizer, leading to dry tips and withered leaves, affecting...
How effective is trenching and topdressing for Welsh onions? Please read on
For a long time, many vegetable growers have been accustomed to trenching to apply a one-time topdressing for Welsh onions, but this is unscientific. This is because doing so not only easily cuts the roots of the Welsh onions, but also burns the young tender fibrous roots due to overly concentrated fertilizer, leading to dry tips and withered leaves, affecting the quality of the Welsh onions and reducing yield.
The correct fertilization method should be: follow the principle of "small meals, more often," applying topdressing 3 to 4 times from transplanting to harvest to prevent fertilizer deficiency in the late growth stage of the Welsh onions. Each topdressing should be evenly broadcast on the soil surface around the roots of the Welsh onions, then covered with soil to cover the fertilizer, reducing fertilizer volatilization loss, promoting the softening and elongation of the white stalks, and enhancing wind resistance. Within two days after hilling and fertilizing, water once to dissolve the fertilizer into the soil and rapidly decompose it, promoting healthy and vigorous growth and development of the Welsh onions.
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