urine-ash is a superior fertilizer

1.18: care/agro/urine as fertilizer:
. compared to mineral fertilizer
urine-fed plants were 10% larger;
urine/ash–fed were 27% larger .

#organic #hydroponics

1.18: care/agro/organic hydroponics:
summary:
. hydroponics can save water,
but it doesn't mix easily with organics;
nevertheless, organic hydroponics is possible;
furthermore, it can make use of soil microbes
that protect plants from pathogenic microbes .