Liming is a good practice to enhance soil pH and supply calcium to the plant that will increase the calcium content in the leaves.
Liming |
DDS (Det Danske Sukkerfabrik - "The Danish Sugarfactory") -- multistage process involving pre-liming where the pH of the juice is gradually increased to start precipitation of proteins, followed by addition of further lime and gas.
The earl was an enthusiast for canal building which would allow agricultural improvement on his Petworth estates by bringing in chalk from Houghton for liming and coal to replace scarce supplies of firewood, releasing more land for food production.