Knowledge & guides
Expert agronomic advice, soil knowledge and news from the world of Bluebird.

Protecting against soil crusting after heavy rain
After heavy rainfall, poorly structured soils form a compacted crust that suffocates emerging seedlings and blocks air access. Calcium and magnesium rebuild the crumb structure.
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Enough of troublesome dust — clean spreading with Carbonate Lime
Dusty oxide lime means wasted material, uneven doses and uncomfortable work. An even 3–6 mm granule lets you spread precisely, with no dust cloud and no downtime.
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Magnesium Lime — a double benefit in a single granule
One operation, two elements. Calcium regulates soil pH and structure, magnesium drives photosynthesis. Magnesium Lime combines both actions in an even granule.
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Find out what your field really needs
Fertilising blind is a waste of money. A soil test reveals the reaction and nutrient levels, so you can choose the right fertiliser and dose for the site's real needs.
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Carbonate Lime — the foundation of modern cultivation
Without regulated pH, even the best NPK fertilisation will not work. Regulating the soil reaction is the foundation on which the effectiveness of all agronomy rests.
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Bluebird at the Agrotech 2026 fair — let's meet!
On 13–15 March 2026, the largest agricultural fair in Central Europe will be held at Targi Kielce. Visit the Bluebird stand: Hall 11, Stand A20.
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Calcium and the plant — what does soil liming do and how does it affect yield?
Calcium is a building block of cell walls and regulates the plant's water balance. On strongly acidified soils, liming can increase maize yield by as much as several dozen percent.
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Black chalk with humus — how to retain water in the soil during drought?
Increasing humus content by 1% can raise the soil's water-storage capacity by as much as around 150 m³ of water per hectare. Learn how humic acids and lake chalk work.
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