Effects of various: Iron treatments on lemon trees

Applications of iron to the soil, or in the irrigation water, have generally not been commercially satisfactory for treating iron deficiencies in lemon trees. Foliar sprays of available iron materials presently show the most promise. In one large-scale trial on mature lemons near Oxnard, yearly low-volume sprays of three iron compounds have shown increases in yield and fruit size. Leaf analysis for iron was found to be a poor indicator of response. A completely satisfactory method of correcting iron deficiency in lemons is still not available.