Maize, its history, cultivation, handling, and uses, with special reference to South Africa : a text-book for farmers, students of agriculture, and teachers of nature study / by Joseph Burtt-Davy ; with frontispiece and 245 illustrations.

  • Burtt-Davy, Joseph, 1870-1940.
Date:
1914
Catalogue details

Licence: In copyright

Credit: Maize, its history, cultivation, handling, and uses, with special reference to South Africa : a text-book for farmers, students of agriculture, and teachers of nature study / by Joseph Burtt-Davy ; with frontispiece and 245 illustrations. Source: Wellcome Collection.

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    TABLE PAGE XXIX. Comparative weights and yields of grain of 1,684 ears of Transvaal-grown maize ....... 146 XXX. Yield per acre from a 75 per cent stand, at various average weights per ear ......... 147 XXXI. Percentage of grain to ear 148 XXXII. Variation in composition and yield of different ears selected for breeding .......... 159 XXXIII. Distribution of gametes in a dihybrid ..... 183 XXXIV. Analysis of a dihybrid cross between white wrinkled and red starchy maize ......... 184 XXXV. The distribution of gametes in a trihybrid ..... 185 XXXVI. Classified summary of Table XXXV ...... 186 XXXVII. Summary of Table XXXVI 186 XXXVIII. Frequency distribution of heights of maize plants in a cross (after East and Hayes) ....... 194 XXXIX. Frequency distribution of lengths of ears in corn (after East and Hayes) ......... 198 XL. Row numbers in a family of Arcadia Sugar-maize . . 201-2 XLI. Inheritance of row numbers in cross-bred maize . . . 204 XLII. Inheritance of rows in a maize cross ..... 205 XLIII. Performance-record of a breeding plot ..... 226 CHAPTER VI. XLIV. For conversion of centimetres to inches, in measuring circum- ference of ears ......... 262 CHAPTER VII. XLV. Summary of Potchefstroom breed tests 334 XLVI. Relative yields of maize breeds, Government Experiment Farm, Potchefstroom, from 1904-11 ... ... 335 XLVII. Rainfall at Government Experiment Farm, Potchefstroom, 1906-7 to igog-io ........ 338 XLVIII. Relative yields of maize breeds at Government Experiment Farm, Cedara, Natal, 1904-5 340 XLIX. Results of maize breed tests, Cedara, Natal, 1905-6 . . . 342 L. Weights per bushel of South African shelled maize . . . 345 CHAPTER IX. LI. Effect of treatment of soil on yield 377 LII. Effect of time of planting on yield 384 LIII. Results of distance tests on yield of Hickory King . . . 390 LIV. Results of distance tests on yield of Iowa Silver-mine . . 390 LV. Results of distance tests in Natal ...... 392 LVI. Number of plants per acre when sown at certain distances, allowing one plant per “ hill ” . . . . . . 394 LVII. Effect of depth of planting on germination .... 395 CHAPTER XI. LVIII. Influence of maturity on yield ....... 457 LIX. Influence of maturity on composition 458 LX. Influence of maturity on composition of fodder .... 459 LXI. Shrinkage in weight of maize stored on the cob . . . 482 LXII. Relative weight of sound and country damaged maize . . 493