Gypsum (calcium sulphate) is a very economical source of both calcium and sulphur. The sulphur in the form of sulphate is readily absorbed by the plant. Application rates will vary according to nutrients already present in the soil and a soil test to check for all nutrient requirements is highly recommended. However, 0.5 to 1
The three important factors in applying gypsum are method, rate and frequency of application. In considering these factors much depends on whether the agriculture is dryland or irrigated, whether the topsoil or subsoil (or both) is to be treated and the nature and extent of the problem. General Application Methods 1. Irrigation, the most immediately
To calculate the fertiliser application rate required for a particular nutrient application rate, use the formula: ReGyp screened gypsum products contain approximately 17% of sulphur (S). Application Rate x % Sulphur = Sulphur application rate (kg/ha) Sulphur Kg/ha = 1000 kg/ha x 17 = 170 kg/ha ReGyp screened gypsum products contain approximately 17% of sulphur
To obtain the total cost of supply and application of gypsum per tonne of pure CaSO4.2H2O, the following information is required: A. the landed cost at the farm gate of gypsum per tonne (gypsum + freight); B. the cost of spreading or mixing in irrigation water per tonne of gypsum; C. the purity, as percentage
In deciding which gypsum to buy, the main points to consider are: the total cost of supply and application of gypsum, expressed on the basis of pure CaSO4.2H20 (Regyp - 90%+ pure), how quickly the gypsum dissolves in water (Regyp - up to four faster), how easily and evenly it spreads (Regyp - up to 30%
There are three main ways in which soils can be tested for likely gypsum response. These are: 1. On-farm tests, these are the quickest but least reliable means of assessing likely gspsum response. The simplest test is to drop about eight small (3-5 mm diameter) air-dry aggregates of soil into a container of rainwater or
You have visited the REGYP News Room page, to find more detail on REGYP's waste services and gypsum products please visit the website www.regyp.com.au or find us at: Phone ph: 1300 473 497 fax: +612 8088 0748 Web Contacts Page: www.regyp.com.au/contacts.html Sydney Site Various Cowra REGYP 30 Nangar St Cowra NSW 2794 Canberra REGYP C/-
Grade 1 : Gypsum must contain a minimum of 15.0% sulphur (S) and a minimum of 19.0% Calcium (Ca). [Regyp gypsum] Grade 2 : Gypsum must contain a minimum of 12.5% sulphur (S) and a minimum of 15.5% Calcium (Ca). Grade 3 : Gypsum must contain a minimum of 10.0% sulphur (S) and a
Steps to test gypsum purity: 1. Determine SO3 and then divide by 0.8333 to get SO4, 2. Determine CaO and then divide by 1.4 to get Ca, 3. After checking that % SO4 x 40/96 = % Ca then: a. Add % SO4 and % Ca b. Divide by 4 to get theoretical LOI.
ReGyp trials recycled gypsum in Cowra for the manufacture of solution grade and aerial grade gypsum products, with great success. Applications of solution grade gypsum (gypsum in suspension), provides a very even spread of the fine particles ensuring availability to all the plants in the first instance. Application rates of gypsum have been trialled before at
