. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. CITRUS FRUITS UNDER IRRIGATION §23 near the seacoast than inland. A vigorous 3-year-old Lisbon tree is shown in Fig. 4. The rather heavy, dense character of the foliage can be seen in the illustration. A lemon of the Lisbon variety is shown in Fig. 5. 6. Selection of Locality and Site.—The lemon will not stand as low a temperature as the orange, hence its planting for commercial purposes must be restricted to localities where the temperature during the winter months is not likely to go lower than 28° F. They thrive best where the
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. CITRUS FRUITS UNDER IRRIGATION §23 near the seacoast than inland. A vigorous 3-year-old Lisbon tree is shown in Fig. 4. The rather heavy, dense character of the foliage can be seen in the illustration. A lemon of the Lisbon variety is shown in Fig. 5. 6. Selection of Locality and Site.—The lemon will not stand as low a temperature as the orange, hence its planting for commercial purposes must be restricted to localities where the temperature during the winter months is not likely to go lower than 28° F. They thrive best where the temperature is fairly equable—not too cold in winter and not too hot in summer. Such locations can be found in certain sections of. Fig. 5 Southern California both near the coast and inland, and, also, in some of the interior valleys of Central California where the topographical features modify extreme climatic conditions to a certain extent. In selecting a site for lemon growing it is well to spend much time in studying the local conditions of the district. The most important factors to consider are the elevation of the site, the presence or absence of cold air-currents from the foot- hills, the quantity of water available for irrigation, the type of soil, the prevalence of pests, the exposure to excessive prevail- ing winds, the distance to the packing house, and the character of the roads. All of these have been discussed for oranges, § 23 CITRUS FRUITS UNDER IRRIGATION 7 and as they apply equally well for lemons, it is not necessary to repeat what has been said. 7. Propagation of Lemons.—The method of prdpa- gatmg lemons is the same as described for oranges in a pre- vious Section. When nursery stock is budded, the bud should be placed high on the stock in order that the bud union will be high above the ground when the tree is planted. This as is explained in a subsequent Section, is a preventive measure used against gum disease. Growers will often find that nurser
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