The levels of elements in soil vary constantly as conditions change. Nitrogen is particularly troublesome in this respect, as it is easily transported in its nitrate form by soil moisture. This means that if it rains heavily or the land is over-irrigated, and soil moisture moves below the root zone, the nitrogen will be lost to the plant.
If you are growing tomatoes using drip irrigation, you’ll need to be extra vigilant as it is easy to over-irrigate.
It is impossible to properly determine the depth of penetration by simply looking at the wet surface. You have to probe the soil or use tensiometers to determine the depth to which the irrigation water has penetrated.
A nitrogen deficiency usually starts to show on the older foliage.
IRON AND CALCIUM
この記事は Farmer's Weekly の Farmer's Weekly 8 July 2022 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 Farmer's Weekly 8 July 2022 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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