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https://doi.org/10.5513/JCEA01/20.3.2097

Effect of topping height and ripeness on quality of flue-cured tobacco varieties

Kristina Gršić ; Croatian Centre for Agriculture, Food and Rural Affairs, Institute for Protection, Zagreb, Croatia
Miroslav Čavlek ; Tobacco Institute Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia

Puni tekst: engleski, pdf (256 KB) str. 841-851 preuzimanja: 94* citiraj
APA 6th Edition
Gršić, K. i Čavlek, M. (2019). Effect of topping height and ripeness on quality of flue-cured tobacco varieties . Journal of Central European Agriculture, 20 (3), 841-851. https://doi.org/10.5513/JCEA01/20.3.2097
MLA 8th Edition
Gršić, Kristina i Miroslav Čavlek. "Effect of topping height and ripeness on quality of flue-cured tobacco varieties ." Journal of Central European Agriculture, vol. 20, br. 3, 2019, str. 841-851. https://doi.org/10.5513/JCEA01/20.3.2097. Citirano 04.07.2020.
Chicago 17th Edition
Gršić, Kristina i Miroslav Čavlek. "Effect of topping height and ripeness on quality of flue-cured tobacco varieties ." Journal of Central European Agriculture 20, br. 3 (2019): 841-851. https://doi.org/10.5513/JCEA01/20.3.2097
Harvard
Gršić, K., i Čavlek, M. (2019). 'Effect of topping height and ripeness on quality of flue-cured tobacco varieties ', Journal of Central European Agriculture, 20(3), str. 841-851. https://doi.org/10.5513/JCEA01/20.3.2097
Vancouver
Gršić K, Čavlek M. Effect of topping height and ripeness on quality of flue-cured tobacco varieties . Journal of Central European Agriculture [Internet]. 2019 [pristupljeno 04.07.2020.];20(3):841-851. https://doi.org/10.5513/JCEA01/20.3.2097
IEEE
K. Gršić i M. Čavlek, "Effect of topping height and ripeness on quality of flue-cured tobacco varieties ", Journal of Central European Agriculture, vol.20, br. 3, str. 841-851, 2019. [Online]. https://doi.org/10.5513/JCEA01/20.3.2097

Sažetak
Investigations of the topping height, ripeness and tobacco variety on the price and quality indices, as expressed by reducing sugars/nicotine, total nitrogen/nicotine and N-proteins/total nitrogen ratios, were conducted during 2004 – 2005 and 2007. Trial treatments included: (1) topping height (17 and 20 leaves for harvesting), (2) leaf ripeness at harvest (unripe, ripe and overripe) and (3) variety (HVT 1, VJ 1, DH 17). Investigation results showed that precipitation deficiency in 2004 resulted in a decrease of overripe tobacco prices, while water stress at the intensive growth stage in 2007 caused a significant price increase from unripe to overripe tobacco harvesting. In the first two trial years, the best reducing sugars/nicotine ratios were achieved by overripe tobacco harvesting. In 2007, delayed ripeness of tobacco led to irreparable disruption of the reducing sugars/nicotine ratio, below acceptable limits, irrespective of leaf ripeness at harvest. The total nitrogen/nicotine ratio was within the limits for good-quality tobacco in all trial years, while higher ratios were recorded in the climatically most favourable year 2005 also in tobaccos with higher topping. The N-proteins/ total nitrogen ratio was in the range acceptable for that ratio in ripe tobacco leaves and in overripe tobacco leaves only in the extreme 2007. Significant impact of variety genetic variability on all the studied traits was established. It is also obvious from the results that irreparable impairment of the tobacco leaf chemical quality in 2007 was manifested only in the reducing sugars/nicotine ratio. Strong correlations were found between price and the reducing sugars/nicotine and N-protein/nitrogen ratios and weak correlations with the total nitrogen/nicotine ratio.

Ključne riječi
N-proteins/nitrogen ratio; price; reducing sugar; reducing sugars/nicotine ratio, tobacco; total nitrogen/ nicotine ratio

Hrčak ID: 225147

URI
https://hrcak.srce.hr/225147

[hrvatski]

Posjeta: 165 *