way-too-alkaline compost
It might be due to too much nitrogen content, I've been told.
I've used it anyway, because even if it makes the soil's pH higher (and thus makes the nutrients less available), maybe having added organic matter in the mix is worth it; and by the time it's more incorporated into the soil and lucerne mulch, the pH of the composted parts will have changed.
I've used it anyway, because even if it makes the soil's pH higher (and thus makes the nutrients less available), maybe having added organic matter in the mix is worth it; and by the time it's more incorporated into the soil and lucerne mulch, the pH of the composted parts will have changed.