Acidity and major nutrients in dairy farm soil

What is the connection between soil pH, acidity, nutrients and amount of lime required to raise the soil pH? When we think of soil acidity most people think of pH. But pH is a measure of active acidity which can be measured with a meter, test strips or indicator solution or powder. In simple terms…

How much phosphorus is in dairy farm soil?

How much phosphorus is there in farm soils? I’m in the process of carrying out a quick assessment of soils on a dairy farm in West Gippsland. Phosphorus use is an increasingly important topic from a $ cost as well as environmental perspective. In this study samples were taken from the same sites previously tested…

Effluent management on a dairy farm

For the last few weeks I’ve been visiting a dairy farm in West Gippsland to learn a bit more about how dairy farms work. It’s also an opportunity to apply some ideas about soil and water management in a practical context. Cows can deposit around 8 – 10% of manure and urine output around the…

Organic matter in dairy farm pasture

The benefits of organic matter in soil are well known. Organic matter improves factors including water holding capacity, nutrient holding capacity and structure. But organic matter can be made up of more longer lasting humus through partially broken down material to fresh material from plants and animals that has recently entered the soil. This fresh…