Karl@literature.cafe to Ask Lemmy@lemmy.world · 1 month agoAre there natural fertilizers that do not come from animal poop?message-squaremessage-square43linkfedilinkarrow-up129arrow-down10file-text
arrow-up129arrow-down1message-squareAre there natural fertilizers that do not come from animal poop?Karl@literature.cafe to Ask Lemmy@lemmy.world · 1 month agomessage-square43linkfedilinkfile-text
minus-squareCanadaPlus@lemmy.sdf.orglinkfedilinkarrow-up6·edit-21 month agoGuano reserves ran out by 1900 IIRC. It’s concentrations of nitrogen and phosphorus in ancient sediment deposits which have become rock, now (and peak phosphorus is coming).
Guano reserves ran out by 1900 IIRC. It’s concentrations of nitrogen and phosphorus in ancient sediment deposits which have become rock, now (and peak phosphorus is coming).