As the plantations do not depend upon any special season of rainy or dry weather, planting and harvesting may be done at any time. In Peru the land upon which sugar cane is grown is generally gently sloping. On the large haciendas, when preparing virgin soil for planting, the brush is first cleared away and the holes filled. The ground is then ploughed and cross-ploughed by steam-ploughs and broken fine by clod-crushers; roadways and drainage ditches are laid out, forming squares or rectangles, and furrows are made at intervals of three to four feet. This done, the ground is ready for planting. The cane tops used for seed are cut during harvesting, loaded on cars and sent to the field that is to be planted. The seed cane is placed horizontally in the furrow and covered with a few inches of earth, and as soon as the whole field is planted in this manner, water from the irrigation ditch is turned in and the cane left to grow. The first weeding is done when the cane shoots are a foot high, and it is continued at intervals until the cane leaves become large enough to shade the ground and prevent weed growth. The cane matures in from eighteen to twenty-four months, according to location, soil and weather conditions. Some weeks before harvesting, irrigation is discontinued in order to allow the cane to ripen. In cultivating the first ratoons, when the cane gets to be a few feet high the crest of the furrow is thrown down into the furrow so that the irrigation water passes between the rows of cane instead of along the furrows, as in the case of plant cane. Ratooning is kept up until it ceases to be profitable. At the Hacienda Cartavio, four ratoon crops have been grown in some places, and as many as seven in others, with good results. [Illustration: PLANTING CANE, PERU] [Illustration: PORTABLE BRANCH LINE OF FIELD RAILWAY AND CANE CUTTERS, PERU] The principal ingredient of the fertilizer used is guano, which is mixed with lime, nitrate of soda, potassium sulphate, or ashes from the bagasse furnaces, and it is applied in various ways. Some planters throw it in the furrows with the seed cane and allow it to remain there a time before turning on the water; others place it in the furrows a few months after the planting and cover it immediately, while still another method is to apply it and turn on the water at the same time. On certain plantations the fertilizer is ground and spread over the entire field just before replanting. Water for irrigating is obtained from the mountain streams, which are dammed at certain points, and but little is pumped from wells. The quantity needed is far less than in Hawaii, owing to the nature of the soil and the presence of underground moisture close to the surface. A fixed amount is assigned to each estate by the government and this is never exceeded during the dry season. In flood time, however, the regulations are somewhat relaxed, as there is then enough for all and to spare.