. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 26 CTTRTTJ^ FRTTTTQ interior of the tree will become as dense as before. In addition, the removal of too much wood at any one time may cause die-back, a disease of citrus trees prevalent in many southern groves. The trunk and main branches of citrus trees should be shaded from the direct rays of the sun, or many branches will die as a result of exposure to excessive heat. The limbs of citrus trees should be strong in order to support a heavy crop of foliage and fruit, and, for this reason, should have sufficient space for developm
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 26 CTTRTTJ^ FRTTTTQ interior of the tree will become as dense as before. In addition, the removal of too much wood at any one time may cause die-back, a disease of citrus trees prevalent in many southern groves. The trunk and main branches of citrus trees should be shaded from the direct rays of the sun, or many branches will die as a result of exposure to excessive heat. The limbs of citrus trees should be strong in order to support a heavy crop of foliage and fruit, and, for this reason, should have sufficient space for development. Suckers will grow out from the interior of a tree, and these should be removed unless they are wanted to fill out some open space in the tree. Fruiting branches can eventually be formed from these suckers by pruning back the ends. Unless desired for filling in spaces, suckers are undesirable; they take much i)lant-food and mois-. riG. 11 ture that otherwise might be of use to the fruiting branches of the trees. Another reason why suckers should be removed IS that, on account of their succulency, they are especially liable to be attacked by the citrus white fly and thus spread this pest to other parts of the tree. All dead and decaying wood should be removed from citrus trees, for such wood harbors fungous growths that arc likely to infest fruit and healthy branches and foliage. For example, the fungus that causes melanose and stem-end rot occurs in decaying wood. The fact that all dead and decaying wood should be removed from citrus trees cannot be too strongly emphasized. Many trees have died and much fruit has been lost m the past on account of dead wood having been allowed to remam on the trees. When removing a partly decayed branch it is well to cut back to healthy wood in order to be §27 IN GULF-COAST STATES 27 sure that all infected areas have been removed. Often infected areas exist beyond the region of apparently dead wood. All decayed twigs and branches should be
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