A guide to Sulphur Deficiencies in Agriculture

Understanding and Managing Sulphur Deficiency in Agriculture and Crops

The scarcity of sulphur in soils

Did you know? As atmospheric deposition of sulphur has declined, Independent soil analysis experts estimate that in 2019, some 85% of UK arable land was deficient in sulphur and in grassland it was 88%.

What is the effect of Sulphur Deficiency in Crops:

Sulphur deficiency in crops can profoundly affect plant health and productivity. Sulphur is essential for various metabolic processes in plants, including protein synthesis, chlorophyll formation, and enzyme activation. Without sufficient sulphur, plants may exhibit symptoms such as overall chlorosis (yellowing) of leaves, particularly in younger foliage, stunted growth, and delayed maturity. Sulphur deficiency can lead to reduced crop yields, poor quality produce, and increased susceptibility to diseases and environmental stresses.

What are the Symptoms of Sulphur Deficiencies in Crops:

Identifying sulphur deficiency in crops requires close observation of characteristic symptoms, these may include:

• Uniform yellowing of younger leaves while veins remain green, especially in the upper canopy
• Leaves may develop a reddish or purplish tint
• Plants may exhibit reduced growth and vigour compared to healthy counterparts

Soil and tissue testing can provide confirmation of sulphur deficiency and guide appropriate remedial actions such as the application of Polysulphate.

How to Manage Sulphur Deficiencies in Crops:

Sulphur deficiency in crops can profoundly affect plant health and productivity. Sulphur is essential for various metabolic processes in plants, including protein synthesis, chlorophyll formation, and enzyme activation.

Without sufficient sulphur, plants may exhibit symptoms such as overall chlorosis (yellowing) of leaves, particularly in younger foliage, stunted growth, and delayed maturity. Sulphur deficiency can lead to reduced crop yields, poor quality produce, and increased susceptibility to diseases and environmental stresses.

How to Prevent Sulphur Deficiencies in Crops:

Preventing sulphur deficiencies requires proactive soil management and balanced nutrient application. Soil testing helps assess sulphur availability and guides fertilisation practices to maintain optimal levels.

Incorporating organic matter into the soil enhances sulphur retention and availability to plants. Additionally, maintaining proper soil pH (usually between 6.0 and 7.0) promotes sulphur uptake by crops.

By understanding the impact of sulphur deficiency, recognising its symptoms, implementing effective management strategies, and adopting preventive measures in agriculture, growers can optimise crop productivity, quality, and resilience to environmental