Lime & Gypsum

Gypsum (calcium sulphate) enables more water, air & nutrients to penetrate a clay soil. In this Sir Walter video Nigel Ruck explains how to use Gypsum to prepare for your new lawn, but also gives you tips on repairing an existing lawn.

Category:

Howto & Style

Tags:

• lawn
• gardening
• grass
• turf
• sir
• walter
• gypsum
• lime
• calcium
• sulphate
• soil
• nutrients
• nigel
• ruck

[piehole19]

• Gypsum is variable in its effects on mature trees; • Gypsum will not improve fertility of acid or sandy soils; • Gypsum will not improve water holding capacity of sandy soils; and • Gypsum’s effects are short-lived (often a matter of months)

[piehole19]

• Gypsum can increase leaching of iron and manganese, leading to deficiencies of these nutrients; • Gypsum applied to acid soils can induce magnesium deficiency in plants on site; • Gypsum applied to sandy soils can depress phosphorus, copper and zinc transport; • Gypsum can have negative effects on mycorrhizal inoculation of roots, which may account for

several reports of negative effects of gypsum on tree seedling establishment and survival;

[piehole19]

• Gypsum does not usually change soil acidity, though occasional reports of both increasing and decreasing pH exist;

• Gypsum can increase leaching of aluminum, which can detoxify soils but also contaminates nearby watersheds;

[piehole19]

Google Linda Chalker-Scott, Washington State University, Horticultural Myths, then scroll down the page to "soil amendments" and see "gypsum." For some reason when I try to sen the link I get the error message.

[piehole19]

Trying to send link, keep getting error, try again. ?

[emigrantgap]

@piehole19 can you link us to this scientific fact? site this fact for us please.

[piehole19]

The scientific fact is, gypsum does not "improve" clay soil. It's a product for lawn companies to make money on and that's about it.