The commonest supply of guano, bat guano is fairly speedy in uptake and so is commonly used in between crop rotations (mid-summer time harvest / replant) or in late spring just prior to planting. Chicken guano has higher nutrition quantities, but seabird guano is simply readily available in some portions https://devinawphy.affiliatblogger.com/81701229/detailed-notes-on-fertilizer-regulations