Silicon (Si)
Definition
Silicon (Si) is a beneficial element for plants, though not classified as essential for all species. It plays a significant role in improving plant structure and resilience.
Silicon is commonly supplied through silicate fertilisers, which can also influence the availability of other nutrients in the soil.
Importance of Silicon in Plant Growth
Silicon contributes to:
- Structural Strength: It strengthens cell walls, resulting in sturdier plants.
- Stress Resistance: Plants enriched with silicon show improved tolerance to drought and enhanced resistance to diseases and pests.
- Nutrient Interaction: Silicon fertilisation can increase phosphorus (P) availability in the soil, supporting better crop nutrition.
Crops with High Silicon Requirements
Certain crops have a greater demand for silicon:
- Grasses and Cereals: These are the primary crops requiring significant silicon input.
- Other Crops: While not essential for all plants, many species benefit from silicon fertilisation, showing improved growth and resilience.
Silicon Fertilisation and Soil Management
Applying silicate-based fertilisers can:
- Improve soil nutrient dynamics, particularly phosphorus availability.
- Enhance crop performance under challenging environmental conditions.
- Support sustainable agricultural practices by reducing susceptibility to biotic and abiotic stresses.
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