Abstract
Summary In fl ue-cured tobacco (Nicotiana tabacum L.) production the aim is improvement of yield and quality (usability) of cured leaf. Th is has been achieved through development of new cultivars and adjustment of cultural practices. In Croatia, most of the fl ue-cured tobacco is grown at plant spacing of 45 cm within and 100 cm between rows, i.e. at planting density of about 22,000 plants per ha. In order to evaluate the eff ect of decreased planting density on agronomic and morphological characteristics of fl ue-cured tobacco, fi eld experiments with six fl ue-cured tobacco cultivars and two within row plant spacings (45 and 55 cm) were conducted at two locations in the main Croatian fl ue-cured tobacco growing regions, over four years (2005 to 2008). Wider spacing within rows resulted in 396.12 kg ha-1 higher yield and 861.01 $ ha-1 higher value than the closer spacing. Change in price was not signifi cant. Length, width, and leaf area of the 9th leaf also increased signifi cantly at 55 cm within row spacing, while plant height and leaf number were unchanged. Cultivar x plant spacing and environment x plant spacing interactions were not signifi cant for the studied traits. Results indicate that higher yield, higher value and good quality of cured tobacco leaf could be produced at 55 cm within row spacing (about 18,000 plants per ha).
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Claims 7
Claim · model-written summary
Wider within-row spacing gave 396.12 kg ha-1 higher yield than closer spacing.
Verbatim
t0“Flue-Cured Tobacco”
e0“Wider spacing within rows resulted in 396.12 kg ha-1 higher yield and 861.01 $ ha-1 higher value than the closer spacing”
Claim · model-written summary
Wider within-row spacing gave 861.01 $ ha-1 higher value than closer spacing.
Verbatim
t0“Flue-Cured Tobacco”
e0“Wider spacing within rows resulted in 396.12 kg ha-1 higher yield and 861.01 $ ha-1 higher value than the closer spacing”
Claim · model-written summary
Change in price was not significant.
Not reportedTreatmentComparator
Verbatim
t0“Flue-Cured Tobacco”
e0“Change in price was not signifi cant”
Claim · model-written summary
Length, width and leaf area of the 9th leaf increased significantly at 55 cm within-row spacing.
- Taxon
- Flue-Cured Tobaccot0
- Treatment
- 55 cm within row spacinge0
- Outcome
- Length, width, and leaf area of the 9th leafe0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“Flue-Cured Tobacco”
e0“Length, width, and leaf area of the 9th leaf also increased signifi cantly at 55 cm within row spacing”
Claim · model-written summary
Plant height and leaf number were unchanged by spacing.
Not reportedTreatmentComparator
Verbatim
t0“Flue-Cured Tobacco”
e0“while plant height and leaf number were unchanged”
Claim · model-written summary
Cultivar x spacing and environment x spacing interactions were not significant for the studied traits.
Verbatim
t0“Flue-Cured Tobacco”
e0“Cultivar x plant spacing and environment x plant spacing interactions were not signifi cant for the studied traits”
Claim · model-written summary
Higher yield, value and good quality of cured leaf could be produced at 55 cm within-row spacing (about 18,000 plants per ha).
Verbatim
t0“Flue-Cured Tobacco”
e0“higher yield, higher value and good quality of cured tobacco leaf could be produced at 55 cm within row spacing (about 18,000 plants per ha)”
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