Ravinneveden

Ravinneveden is a term used to describe water that contains dissolved nutrients and is suitable for plant uptake. It can refer to water produced intentionally for irrigation and hydroponics, or to water that carries nutrients as a result of soil drainage, wastewater streams, or other sources. The concept is central to fertigation and hydroponic systems where nutrient delivery is integrated with irrigation.

The composition of ravinneveden varies with its source and purpose. The main nutrients include nitrogen, phosphorus and potassium, often present as nitrate, ammonium, phosphate, and other soluble forms. Secondary nutrients such as calcium, magnesium and sulfur, along with micronutrients like iron, manganese, zinc, copper, boron and molybdenum, may be present in smaller quantities. The exact balance is adjusted to match crop requirements and growth stage, and is typically described by measurements such as electrical conductivity (EC) and pH.

In practice, ravinneveden is used in fertigation and hydroponics. In fertigation, soluble fertilizers are delivered with irrigation water to provide precise nutrient supplies. In hydroponic systems, a defined nutrient solution is prepared and continuously or periodically replenished, with careful control of EC and pH to optimize nutrient availability and uptake by plants.

Measurement and management of ravinneveden emphasize maintaining appropriate EC, pH, and ion balance. Regular monitoring helps align nutrient supply with crop demand while preventing salt buildup or nutrient deficiencies. Recycling or treatment of runoff and drained water is common in intensive systems, but requires careful management to minimize environmental impacts.

Environmental and regulatory considerations focus on preventing eutrophication and protecting groundwater. Proper handling, storage, and application of nutrient-rich waters are essential to reduce nutrient losses and comply with agricultural and environmental guidelines.