Can black-hearted white radish still be eaten?

It is recommended not to eat black-hearted white radish. The blackening of the heart of white radish may be due to deterioration or the lack of certain nutrients during growth. If it is the former, it must not be eaten, but if it is the result, you can eat it, but the taste will be much worse. And ordinary people have no way to verify the reason why the heart of white radish turns black, so it is still recommended not to eat it.

2. Causes and prevention methods of black hearts in white radish

1. Black hearts due to hypoxia

Black hearts caused by lack of oxygen in the roots will be found after cutting the roots. The xylem of the fleshy roots turns black and many black spots appear, making them inedible. At this time, the radish is caused by applying a large amount of unripe or poorly decomposed organic fertilizer in the field, especially the manure, which will cause strong microbial activity in the soil and excessive oxygen consumption, causing root suffocation and some tissues causing black heart due to lack of oxygen. Or the phenomenon of black skin.

Prevention and control methods: The plot for planting radish should be deeply plowed and leveled to keep the soil loose and increase permeability. When applying organic fertilizer or farmyard manure, it must be fully decomposed, properly irrigated, and strengthened cultivating and supply. The roots have sufficient oxygen to promote their healthy growth, and they should be drained promptly after rain to avoid water accumulation causing black hearts or black skin. When storing radishes, the amount should be appropriate and should not exceed half of the cellar capacity. Ventilation should be strengthened to control the lower temperature and humidity in the cellar.

2. Boron deficiency and black core

Boron is one of the indispensable elements for the growth of radish. Boron deficiency can easily cause black core, hollow core and rotten core. The first reason for boron deficiency is that the soil lacks boron; the second is that the partial application of certain elements inhibits the absorption of boron by the roots; and the third is that high temperature and drought conditions also affect the absorption of boron by the roots, thus causing the deficiency. boron.

Prevention and control methods: Add 300-400 grams of borax to the base fertilizer, mix it thoroughly with other fertilizer particles and apply it in strips, or take measures to spray boron on the foliage during the growth period, usually in When 2-3 true leaves appear on the radish until before harvest, 0.2 boric acid or 0.3 borax aqueous solution can be sprayed every 10 days, 3 times a day. In addition, the field must be kept moist to promote the absorption of boron by the roots, prevent drought, and water in a timely manner during the growing period.