Flue-Cured Tobacco Factors Determining Type and Seasonal Differences

Some Effects of Sprinkler Irrigation on Flue-Cured Tobacco

“…The amounts of u,'ater applied rvith these trvo freatments were slighth,-greater in most instances than the amouirts for the treatment irrigated at the bloom period, but considerably less than the application amounts for the \veekl-v scheclule, Treatment 2, and for the moisture block schedule u'ith 1.8 inches of r'vater per application, Treatment 4. \\r-eekly irrigation, Treatment 2, represeuts a case of over-irrigation as the application of considerable rvater in excess of that applied for Treatments L and 3 failed to produce an additional increase in f ield and quaiitl'. Itluch of the rvater for'freatment 2 u'as applied early in the season be{ore the soil moisture had been reduced to a critical level, but it -was insufficient in amount to cause appreciable soil leaching, as the yield was similar to the yisld obtained for ' These results agree u'ith other reports (3,4,8,10,12) with respect to total nitrogen and total alkaloids, and rvith Darkis et al (4) for potassium. The results for potassium are in disagreement with Schmid (10) …”

“…Darkis et al (3) recognized that excessive rainfall produced thin, lightcoloured tobacco with a high per cent of carbohydrates and a low per cent of nicotine, petroleum ether extract, and total nitrogen. Insuffrcient rainfall produced thick, gumm-v, dark-coloured tobacco, low in sugars and high in nicotine.…”

Tobacco1: Natural Aging of Flue-Cured Cigarette Tobaccos

“…The present studies deal entirely with flue-cured cigarette tobacco which in chemical composition (6,11), method of curing (10,12), method of aging, and criterion of quality is vastly different from the cigar types. These differences are such as to effect marked differences in fermentation behavior and necessitate some description of the material and its pre-aging treatment.…”

“…The carbon dioxide content of the air from within the hogshead of tobacco was determined on a modified Anderson apparatus as described by Jones {18) and expressed in parts of carbon dioxide per 10,000 parts of air. The chemical methods were those described in a previous paper (6).…”

“…The samples for chemical analyses were taken in the same manner as described in a previous article (6).…”