J K senior & sons

This app is a guide to be used by both adviser & Farmers as a guide to the correct rotation to compl

This is a guide to the value of phosphate & potash removed from the soil when straw is removed from

Once you have determined your seeds per square metre or per metre (for crops grown on wide rows),thi

This app will calculate the weight loss of any arable crop. Insert the weight in tonnes, the moistur