SULPHATE OF AMMONIA ?
Hi, I have an allotment measuring 80 x 30 foot. I tested the soil recently with a kit bought from B & Q and found the soil to be extremely alkine. The instructions in the kit recommend applying Sulphate of Ammonia to reduce the pH. How much should I apply and when ? I have recenly finished turning over the plot. Can I apply in winter or wait until spring ? Any advice please ?