S4 ● E83 BioFertilisers, Compost Teas & CalPhos

21 Jul 2017 · 15 min
14:49

Richard Perkins shows how to make compost tea, an anaerobic biofertiliser from compost and molasses, and a calcium-phosphorus fertiliser by soaking charred eggshells in vinegar. He examines the microbes under a microscope and walks through fermentation times and retail pricing for loose vegetables.

Questions this video answers

7 liters (7 kilos) compost + 0.5 litre molasses + a bit of rock dust (per cited batch).

Fermentation time: 1–3 months (depends on ambient temperature).

18 litres of fresh cow manure (in the small barrel).

"Eight yogurt and about eight milk" recorded; quoted total ≈1.6 litres (raw milk/yogurt).

Five parts vinegar to one part eggshell (5:1).

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