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Experimental treatments

Treatment 1 Treatment 2 Treatment 3 Application rate, kg per ha Application method
Straight N, P, K Acron NPK NPK N120P50K120 Sowing and three applications during the vegetation period

Field trials

Yield, t per ha (total for two harvests)
Acron NPK fertilisers produce bigger bulbs and higher yields compared to other fertilisers
Net return
Acron NPK fertilisers produce top-quality yields generating higher profits compared to the farmers' usual practice

Nutrition system

Fertiliser Application rate, kg per ha
Sowing After 10-15 days After 40-45 days After 80-90 days
NPK 16-16-16 100
Urea 30
NPK 19-9-19 250
NPK 18-6-18+5SO₃+2MgO 260

Reference fertilisers

Fully water-soluble
NPK 16-16-16
NPK 16-16-16
High-performance prilled complex fertiliser

Other trials in Vietnam

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