CONTENTS 



power of the soi 



SECTION 



2gg. Conservation of moisture by tillage 



300. Dry-land farming 



301. Irrigation .... 



302. Available plant-food . 



303. Recuperative power of soils 



304. Character of South African soils 



305. Soils suitable for maize-growing 



306. New v. old lands 



307. Effect of tillage . 



308. Effect of continuous cropping 



309. Maintaining the crop-producing 



310. Summer fallowing 



311. Rotation of crops 



312. Organic matter . 



313. Use of leguminose green-manure crops 



314. Rotations with maize in other countries 



315. Some Transvaal rotations . 



316. The functions of manures . 



317. Manurial requirements of the maize crop 



318. Does the use of fertilizers pay ? . 



319. Cost of fertilizers in the interior provinces 



320. Residual value of manures . 



321. Stable and kraal manure 



322. Artificial manures or commercial fertilizers 



323. Method of applying fertilizers 



324. Influence of season on efficacy of fertilizers 



325. Use of lime .... 



326. Indication of need of lime . 



327. Kinds of lime .... 



328. Preparation of the lime 



329. Method of applying lime 



330. Phosphatic manures 



331. Superphosphate alone 



332. Bone-meal alone .... 



333. Superphosphate and bone-meal mixed 



334. Basic slag alone .... 



335. Nitrate of soda alone . 



336. Superphosphate and nitrate of soda 



337. Manganese compounds 



338. Potassium ..... 



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CHAPTER IX. 



TILLAGE, PLANTING, AND CULTIVATION. 



339. Time of ploughing .... 



340. Depth of ploughing .... 



341. Different soils require different treatment 



342. Preparation after ploughing 



343. Time of planting 



344. Listing 



345. Use of planters . 



346. Check-rowing 



347. Distance of planting . 



348. Distance tests in the Transvaal . 



349. Distance tests in Natal .... 



350. Distances tried in the United States . 



351. Planting distance for silage or fodder maize 



352. Effect of thickness of planting on composition of the fodder 



353. Number of plants to an acre of ground at different distances 



354. Amount of seed planted per acre .... 



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