FAQs

This is an overview about lime and it’s uses, if you have any other questions please feel free to contact us we’ll be happy to help.

Are All Limestone Quarries the same?

In short NO, there can be huge variations in Available Lime Content (ALC) within a single quarry as well as between quarries in different geographic locations. The best option is to ask your local quarry for their latest ALC tests to find the best quality products, or check online at www.fertqual.co.nz to see which quarries are Fertmark Certified.

What does lime flour do for my dairy cows?

To prevent milk fever in dairy cows, start dosing immediately after calving for at least 4 days (colostrum period) and continue for several weeks or months. The dose rate is generally 100 -300g per cow per day.

To use as a drench, mix one part fine ground lime with four parts water. Stir regularly and flush equipment after use.

To dose calcium deficient cows, fine ground lime can be added to maize or field cereals at a rate of 50 -300g per cow per day or add to feed at a rate of 60 – 120g per kg of feed on a wet basis.
DO NOT FEED TO COWS IN THE LAST TWO MONTHS OF PREGNANCY.

What is stabilised driveway lime?

When producing hydrated Lime WHL also produce a product called Hydrate tailings, when mixed with driveway lime and correctly laid, will act as a binder giving you a much stronger surface. This is ideal for areas of high traffic or steep gradients.

What is the best Material for my tracks and driveway?

At WHL we have a number of track/driveway products to suit your requirements including Driveway Lime, Driveway fines, AP40, Stabilised Driveway Mixes.

What is the difference between Agricultural lime and Industrial Lime?

Agricultural lime is selectively removed from the quarry face then crushed to a variety of size variations based on market requirements and stone quality.

Industrial Lime is selectively removed from the quarry face crushed to a suitable size then heated to 9000 + for 30 minutes which changes the chemical composition from Calcium Carbonate CaCo3 to Calcium Oxide Cao. Cao is used extensively in road stabilisation, wastewater treatment and agriculture. At WHL we then add water to the Cao creating Calcium Hydroxide Ca(OH)2. This product is used in the tanning industry, municipal water treatment, wastewater treatment, C02 absorption and pesticide manufacturing.

What type of lime should I use on my Horse Arena?

Arena Lime is raw limestone crushed to a top size of 10mm. This grade of limestone will provide a soft free draining surface for your horses.

Why is the Available Lime Content (ALC) so important?

The best way to describe the Available Lime Content is the amount of “Active Ingredients” contained within a load of lime. If you have an Ag lime with 80% available lime, it means that only 80% of the load you receive will be effective. The higher the available lime content the better it will work to raise the pH in your soil.

At WHL our AG lime is between 90-95% available lime. We have Fertmark certification which is independently monitored by Federated Farmers to ensure we meet a minimum vale of 90%. The benefits are obvious – the higher the ALC the less you will spend on product and transport.

Why should I put Ag lime on my pastures?

Agricultural lime is essential for the health of a well-balanced pasture. It is proven that farms that regularly apply Ag Lime see increases in pasture production which in turn lead to increases in animal live weight, wool weight and milk solids.
Ag lime is a low cost way to unlock your pastures full potential by correcting pH imbalances, increasing the availability of Phosphorous (P) Nitrogen, (N) Potassium, (K) Calcium, (Ca), Magnesium (Mg) and other trace elements such as boron and molybdenum.

Request a quote calculate lime quantity Latest News
IOQ Conference 2015 – Hamilton
31/07/2015

This years Institute of Quarrying conference held in Hamilton was themed “Forging a path to the Future” Earlier in the year Worksafe inspectors made their way around 26 sites in New Zealand assessing each on strict criteria for safe work environments. Websters Hydrated Lime Co was awarded the Winstone Aggregates Safety Award – this is the 26th year that this has been awarded. “Our team is chuffed to have been awarded this prize which highlights that we are on the Read more