. Experimental work carried on in 1908 [microform]. Tobacco; Tobacco; Tabac; Tabac. 14 Table V—(7on<$nu«d. Number. UeiTDiBfttor Artificial loil 14 dayi 31 d»yt B.—Half ripe oa|Miile* m 668 «n 873 675. A ali^t difference in favour of the seed gathered ripe and germinated on arti- ficial aoil is obaerved: 80 66 per cent instead of 80 per cent. But, in the test with the germinator, the half ripe seed obtains the preference: 65 16 per cent instead of 40-74 per cent. We do not consider these results as final, as the investigation could not be carried U far aa desired. However, we
. Experimental work carried on in 1908 [microform]. Tobacco; Tobacco; Tabac; Tabac. 14 Table V—(7on<$nu«d. Number. UeiTDiBfttor Artificial loil 14 dayi 31 d»yt B.—Half ripe oa|Miile* m 668 «n 873 675. A ali^t difference in favour of the seed gathered ripe and germinated on arti- ficial aoil is obaerved: 80 66 per cent instead of 80 per cent. But, in the test with the germinator, the half ripe seed obtains the preference: 65 16 per cent instead of 40-74 per cent. We do not consider these results as final, as the investigation could not be carried U far aa desired. However, we consider that the method followed by many farmers of gathering the floral clusters whilst the sepals are still green, is justified. The only precauti<m necessary is not to hasten the operation. Further experiments will enable us to elucidate some points which, so far, have remained doubtful, but the following practical conclusions may be deduced:— Concluaiont. (a) All the leaves should be left on the seed plants with the exception of the leaves at the foot of the plant which disappear at piiming, and of the top leaves which would be removed at the time of topping, if the plant were not reserved for the production of seed. It is impossible to say just how many leaves should be thus removed, but seed plants in a tobacco field should look like plants normally topped, but apparently a little longer than the rest owing to the naked extremity of the stem which is sur- mounted by the floral cluster. (6) In order to avoid hybridization and undesirable crossing, the mixed method of cultivation described above is recommended: (fertilization under bags and ripen- ing in the open air). (c) The harvest should be completed early. The late capsules which have not been removed or which, owing to unfavourable weather conditions, have not ripened sufficiently, should be sacrificed. It would be well for the grower to study these conditions in order t» ascertain the extreme date at wh
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttobacco, bookyear1909
