Nutrient content of water soluble hydroponic fertilizers
The nutrient content of water soluble hydroponic fertilizers is not always clearly indicated on packaging. It is fine that fertilizer companies take control out of...
Tag Archives: Nutrients
Understanding nitrogen dynamics during cucumber growth season
We all know the basics of nitrogen in plants. The good and the bad. Every grower and student knows nitrogen is important for good looking...
Fertigation of cucumbers – the basics
Cucumbers are sensitive to water stress (to little water) and to water logging (over watering). Any of these two conditions will reduce plant vigour and...
Nutrient interactions: Calcium and Boron ratio
Calcium and Boron have a close relationship in the plant. Their absolute concentrations and the relative ratio between the two affects how much of each...
Nutrient uptake of cucumbers depends on light intensity and air temperature
When it comes to fertigation programmes or recipes, most commercial growers have a good indication of what is required. The nutrient program is either obtained...
How important is the ammonium/nitrate ratio
The ammonium/nitrate ratio in the nutrient solution is important since it can have a significant effect on the quality and total yields of the tomato...
What is nutrient conditioning?
Nutrient conditioning is the process of managing the nutrient content of seedlings in the nursery for optimal growth when they are transplanted. This sounds easy,...
Tomato fertigation in hydroponic greenhouses
Tomato fertigation is a complex subject in hydroponics. It is climate sensitive and everybody has an opinion of what works. The point is, tomatoes are...
Formulating a hydroponic nutrient solution – Part I: Macro Nutrients
The first question would be where to start and with what element. The following procedure should be followed. Always start with the element phosphorus and...
How to calculate nutrient content with atomic weight and molecular weight
The atomic weight or molecular weight is the relative weight of each atom compared to other atoms. The base element to which all other elements...
A list of 43 important hydroponic fertilizers
First it is important to understand which nutrients are included in the various fertilizers and in what amounts. It is important to distinguish between macro...
Salt content of water for hydroponic use
Salt content is one of the most important factors that should be evaluated before designing a hydroponic production system. It has been found that yields...
Micro-elements – It’s role in plant growth
Micro-elements are quite often referred to as the “trace” elements since they are used in such minute quantities in the nutrient solution. Micro-elements tend to...
Sulphur (S) – It’s role in plant growth
Sulphur (or sulfur)is also known as the “ignored primary nutrient” since not many people realize that it is one of the macro nutrients and is...
Magnesium (Mg) – It’s role in plant growth
Magnesium was discovered by Nehemiah Grew in 1695 by evaporating mineral waters in Epsom England. It was only in 1808 that Sir Humphrey Davy isolated...
