MAKE TOPINAMBUR BE BIGGER
How to get large tubers from Jerusalem artichoke?
Boris Shiroky, Irkutsk
Answered by Natalia Solonovich, agronomist
Jerusalem artichoke grows on almost any soil, but gives the best yields on fertile loam or sandy loam with neutral acidity. The optimal level for it is 6-7,2 pH.
On loose soil, the tubers turn out to be large and there are more of them, and on heavy soil they are not only small, but also deformed.
Therefore, once every 2-3 years in the spring, simultaneously with loosening the soil in the garden, rotted compost or humus is distributed (5-10 kg per 1 sq.m). In the spring, wood ash and superphosphate are added for tillage (300 g and 15 g, respectively, per 1 sq.m).
Bushes should not be allowed to thicken in previously planted areas. In spring, the soil must be loosened, and when the sprouts reach a height of 10-15 cm, thin out, and then spud, leaving a distance between bushes of at least 40 cm, and between rows - 30 cm.
When the Jerusalem artichoke begins to tie buds, it is better to remove them so that the plant does not expend energy on flowering and fruiting. For the same purpose, plants that are too elongated are shortened to 1,5-2 m.
Forage varieties are most common among gardeners. Today, there are those that were bred specifically for tubers. They are located in the nests more compactly and are easily separated from the stolons.
For household plots, the varieties Omsky Bely, Pasko, Skorospelka, Solnechny, Dessertny, Volzhsky 2 are recommended. You need to choose early ripening ones: their tubers begin to form as early as August.
In one place, Jerusalem artichoke can grow up to 30-40 years, but gives good yields in the first 4-5 years. For planting, only absolutely healthy tubers with a diameter of 6-8 cm (approximately the size of a chicken egg) are selected. Landing pattern - 40 × 70 cm.
Reference by topic: Growing Jerusalem artichoke - planting and care + RECIPES (Kursk region)
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