Proceedings of the South & East African combined agricultural, cotton, entomological and mycological conference held at Nairobi, August, 1926

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Monograph

Identifikator:: 1738588467

URN:: urn:nbn:de:zbw-retromon-115043

Document type:: Monograph

Title:: Proceedings of the South & East African combined agricultural, cotton, entomological and mycological conference held at Nairobi, August, 1926

Place of publication:: Nairobi

Publisher:: East African Standard

Year of publication:: 1926

Scope:: VI, 337 Seiten; Ill.

Digitisation:: 2020

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Part III. Cotton

Collection:: Economics Books

PART 111. : (b) Selection of seed in bulk from areas where good crops have been obtained. (Co-terminously with this work, selection along the lines described above in (a) is carried out in every season.) (¢) A third method, viz., mass introduction of seed of desirable type from countries or districts of similar climate, due precautions being taken against the introduction of insect pests; (d) Mass selection of seed on the assumption that fuzziness in the seed is associated with superior lint. The Section agreed that, in the absence of plant breeding in the strict sense of the term, the Director of Agriculture, Tanganyika, had no alternative to mass selection. The question of mass selection had already been discussed when it was agreed that mass selection must be considered only as a temporary method during the time necessary to establish pure strains. With regard to selection of seed on appearance, it was considered that the success of the procedure suggested would depend on whether the fuzziness of the seed in the mixture dealt with was really associated with good quality lint. This was a matter for investigation, and could not be accepted without actual trials. The experience of most members of the Section was that no linkage existed between fuzziness and good quality lint. A. INTERCHANGE OF STRAINS BETWEEN AFRICAN COUNTRIES. Three points were brought out in discussion :— (a) The desirability of information regarding existing or new strains being available in a readily accessible form (b) The necessity for guarding against the loss of a strain which might at the moment not appear useful, but which, owing to some special characteristic, at a later date might become valuable; (¢) The question of nomenclature of strains. With regard to (a) it was agreed that the Empire Cotton Growing Corporation be asked to prepare and publish a list, which should be kept up to date by the issue of supplements, of all varieties and strains of cotton in cultivation throughout the world, with a description of the characteristics of each variety and the conditions under which it was grown. (b) It was recommended that cotton breeders in their reports should give details of such strains as they were themselves rejecting, but which, owing to special characteristics, might be of value to others; small stocks of such seed should be stored locally against further requirements. (¢) Uniformity of nomenclature of strains in Africa was considered desirable. So far as South and Bast Africa were concerned, it was considered that new productions should be distinguished by the name of the producing station followed by a distinguishing number, or letter, or both. 10. INTRODUCTION OF NEW VARIETIES FROM COUNTRIES OUTSIDE AFRICA. It was considered that much benefit would accrue from the broadening of the basis for selection by the introduction of promising varieties from outside, especially from America. It was stated that the difficulty in obtaining suitable varieties through the usual channels 125

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