fertigate
Fertigate for soil health and profit – Part 9: Examples for the calculation of injection rates
by Frikkie Koegelenberg (Pr ENG) and Gert Conradie (Pr Eng) In the previous entry of this series we examined some examples of the calculations of fertiliser injection rates in static irrigation systems. In this edition we shall discuss the application of fertiliser in moving irrigation systems such as pivots[...]
Fertigate for soil health and profit – Part 8: Examples for the calculation of injection rates
Frikkie Koegelenberg Pr Eng and Gert Conradie Pr Eng The manner in which the injection rate is calculated is drastically influenced by the type of irrigation system used. With static systems such as micro and sprinkler irrigation systems, the injection rate is fixed, and the quantity of fertiliser required[...]
Fertigate for soil health and profit – Part 7: Electronic control, safety measures and injection of fertiliser solutions
Frikkie Koegelenberg Pr Eng and Gert Conradie Pr Eng Electronic control of injectors for fertigation can be done by monitoring of electrical conductivity (EC) and pH. Electronic control of injectors ensures that a higher measure of accuracy is possible, as these types of systems can be fully automated. Sophisticated[...]
Fertigate for soil health and profit – Part 6: Pumps and other equipment
Frikkie Koegelenberg Pr Eng and Gert Conradie Pr Eng Pumps, valves, filters, sensors and mixers also form an integral part of a fertigation system. This month we discuss the different types of pumps and all the secondary equipment. Electrically driven pumps Electrically driven pumps use electric energy to drive[...]
Fertigate for soil health and profit – Part 5: Deciding on equipment – passive injectors
Frikkie Koegelenberg Pr Eng and Gert Conradie Pr Eng Injectors can be categorised into three types, namely passive and active apparatus and a combination of the two. Passive injectors use the energy present in the irrigation system (water from the irrigation pump) or energy in the atmosphere to inject[...]