Posted 10/4/2012 17:22 (#2623585 - in reply to #2623514) Subject: organic matter
near Orleans, France
is probably the key of natural fertility pasture and permanent hay crops have hight om levels so need less fertilizer and deep rooting of those permanent crops recycle a lot more fertilizer when row crops leave the soil uncover and subject to loss of fertilzer during 1/2 of the year adding cover crops between row crops helps to cut fertilizer need rates, like copying pasture and woods work