from £32.50 per sample
Total nitrogen and Sulphur with N:S ratio.
Sulphur deficiency can be diagnosed by analysing young fully expanded leaves at early flowering stage. At this stage of growth there is little opportunity to correct any deficiency, but identifying deficiency allows remedial action to be taken for subsequent crops.
Sulphur is an important plant nutrient and plants need about the same amount of sulphur as of phosphorous. In the past, large amounts of sulphur were released into the atmosphere from industrial processes but since the Clean Air Act 1993, atmospheric deposition has declined greatly in recent years. Consequently crops should be monitored for signs of deficiency.