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Corn has very high nutritional requirements, with limitations on supply of nutrients contributing to minimising yield. 

corn growing in a field

Good fertilisation in corn cultivation depends primarily on controlling the action of nitrogen (the main yield-generating component). It is important to know the pH of the soil because liming should be applied first, before fertilisation treatments. The pH of the soil for corn cultivation should be between 5.5 and 7.0. This facilitates the access of nutrients, creating a strong root system and increasing resistance to drought. When drought occurs after a cool spring, starter fertilisation should be applied (nitrogen and phosphorus). In Europe, frequent droughts mean that soil has poor water content. Raising the humus content of the soil contributes to the accumulation of water. Precipitation during the corn growing season from April to May and the amount of water are basic elements that determine yield, with a greater impact than the accumulated average temperatures over that period.

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