The ammonia half of nitrogen is able to be taken up by cabbage plants, but because it is positively charged, it is attracted to the soil colloids and therefore not freely available to be taken up, as it is not in the soil water until converted to nitrate by bacteria. Nitrate is negatively charged and therefore repelled by the soil colloids into the soil water.
LAN therefore has the advantage of having half immediately available and half with delayed availability, thereby providing a measure of safety.
Experience helps to get the nitrogen fertilisation right, but until that stage, we need to err on the side of perhaps overdoing it just to make sure that it is sufficient.
この記事は Farmer's Weekly の October 13, 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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この記事は Farmer's Weekly の October 13, 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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