SHADE AND WIND BREAKS. Strong, chilly winds and intensely hot sunlight are foes of coffee trees, especially of the _arabica_ variety. Accordingly, in most countries it is customary to protect the plantation with wind-breaks consisting of rugged trees, and to shade the coffee by growing trees of other kinds between the rows. The shade trees serve also to check soil erosion; and in the case of the leguminous kinds, to furnish nutriment to the soil. Coffee does best in shade such as is afforded by the silk oak (_Grevillea robusta_). In _Shade in Coffee Culture_ (_Bulletin_ 25, 1901, division of botany, United States Department of Agriculture), O.F. Cook goes extensively into this subject. The methods employed in the care of a coffee plantation do not differ materially from those followed by advanced orchardists in the colder fruit-belts of the world. After the young plants have gained their start, they are cultivated frequently, principally to keep out the weeds, to destroy pests, and to aerate the earth. The implements used range from crude hand-plows to horse-drawn cultivators. FERTILIZING. Comparatively little fertilizing is done on plantations established on virgin soil until the trees begin to bear, which occurs when they are about three years of age. Because the coffee tree takes potash, nitrogen, and phosphoric acid from the soil, the scheme of fertilizing is to restore these elements. The materials used to replace the soil-constituents consist of stable manure, leguminous plants, coffee-tree prunings, leaves, certain weeds, oil cake, bone and fish meal, guano, wood ashes, coffee pulp and parchment, and such chemical fertilizers as superphosphate of lime, basic slag, sulphate of ammonia, nitrate of lime, sulphate of potash, nitrate of potash, and similar materials. The relative values of these fertilizers depend largely upon local climate and soil conditions, the supply, the cost, and other like factors. The chemical fertilizers are coming into increasing use in the larger and more economically advanced producing countries. Brazil, particularly, is showing in late years a tendency toward their adoption to make up for the dwindling supply of the so-called natural manures. As the coffee tree grows older, it requires a larger supply of fertilizer. [Illustration: THE FAMOUS BOEKIT GOMPONG ESTATE, NEAR PADANG, ON SUMATRA'S WEST COAST Showing the healthy, regular appearance of well-cultivated coffee bushes, twenty-six years old. Also note the line of feathery bamboo wind-breaks]