Radish Black Heart Cause

Radish Black Heart Cause

The transverse roots of the radish appear to have a horizontal, filiform black line and become rough, and the internal organs of the radish are discolored and deteriorate. The main reasons are the lack of boron and excessive chloride ions; the high groundwater level and poor drainage; and the use of fertilizers that are not fully decomposed. Therefore, it should be avoided to plant in low-lying land; if no chlorine compounds are applied or less applied, boron fertilizer should be added. Boron is easy to leaching in the rainy season, drought is easy to be fixed, should be combined with the top dressing and dressing fertilizer outside the roots, 1 kg of borax per acre for the base fertilizer, foliar spray 0.5% ~ 1% of borax 2 ~ 3 times.

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