Abstract
Abstract The study aiming to determine the effect of different irrigation regimes and water stress imposed at different growth stages on water use and leaf yield of flue‐cured tobacco plant ( Nicotiana tabacum L.), was carried out during the period of 2000–03. The field trials were conducted on a silty loam Entisol soil, poor in organic matter and rich in potassium on the fields of the Atatürk Soil and Water Resources Research Institute in Kırklareli. A randomised complete block design with three replications was applied and K‐326 Virginia tobacco cultivar was used in the experiment. Three known stages of the plant, vegetative (V), yield formation (F) and ripening (R), were considered and a total of 14 (including rain‐fed) irrigation treatments were applied. All the experimental treatments were irrigated on the same day in each growth stage with the amount of water required to fill the 0–90 cm soil depth to field capacity, and three levels of water amount reductions (0, 40 and 60%) were applied at each development stage. A single irrigation was applied during the second part of the vegetative stage, while subsequent water applications were at the 50 and 70% depletion level during the yield formation and ripening stages, respectively. Results of the 3‐year study show that either total irrigation water amounts and number of applications, or leaf yields are closely related to precipitation rate and distribution during the growing year. While the seasonal irrigation amounts applied in the adequate irrigation treatment (VFR) were greater (945 and 815 mm respectively in the drier experimental years of 2000 and 2001), they were much lower (587 mm) during the rainy year of 2003. The highest leaf yields in the range of 5170–6050 kg ha −1 were obtained from the fully irrigated programme (VFR), from treatments with 40% reduction in irrigation water amount at any stage (V 1 FR; VF 1 R, VFR 1 ) and irrigation programme (FR) including omitted irrigation at vegetative stage and fully irrigated during the next two stages. It was also determined that close linear relationships exist between seasonal evapotranspiration rate and leaf yield, and seasonal evapotranspiration deficit and relative yield reduction, during each of the experimental years. Copyright © 2009 John Wiley & Sons, Ltd.
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Claims 8
Claim · model-written summary
Total irrigation water amounts and number of applications, or leaf yields, are closely related to precipitation rate and distribution during the growing year.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- total irrigation water amounts and number of applicationse1
- Outcome
- leaf yieldse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e1“either total irrigation water amounts and number of applications, or leaf yields are closely related to precipitation rate and distribution during the growing year”
Claim · model-written summary
Seasonal irrigation amounts in the adequate irrigation treatment (VFR) were greater, 945 and 815 mm, in the drier years 2000 and 2001.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- adequate irrigation treatment (VFR)e2
- Outcome
- seasonal irrigation amountse2
- Direction
- greatere2
- Value
- 945 and 815 mme2
- Setting
- drier experimental years of 2000 and 2001e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e2“While the seasonal irrigation amounts applied in the adequate irrigation treatment (VFR) were greater (945 and 815 mm respectively in the drier experimental years of 2000 and 2001), they were much lower (587 mm) during the rainy year of 2003”
Claim · model-written summary
Seasonal irrigation amounts were much lower, 587 mm, in the rainy year 2003.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- seasonal irrigation amountse2
- Direction
- much lowere2
- Value
- 587 mme2
- Setting
- rainy year of 2003e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e2“While the seasonal irrigation amounts applied in the adequate irrigation treatment (VFR) were greater (945 and 815 mm respectively in the drier experimental years of 2000 and 2001), they were much lower (587 mm) during the rainy year of 2003”
Claim · model-written summary
The fully irrigated programme (VFR) gave the highest leaf yields, 5170–6050 kg ha −1.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- fully irrigated programme (VFR)e4
- Outcome
- leaf yieldse4
- Direction
- higheste4
- Value
- 5170–6050 kg ha −1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e4“The highest leaf yields in the range of 5170–6050 kg ha −1 were obtained from the fully irrigated programme (VFR), from treatments with 40% reduction in irrigation water amount at any stage (V 1 FR; VF 1 R, VFR 1 ) and irrigation programme (FR) including omitted irrigation at vegetative stage and fully irrigated during the next two stages”
Claim · model-written summary
A 40% reduction in irrigation water amount at any stage gave high leaf yields, 5170–6050 kg ha −1.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- 40% reduction in irrigation water amount at any stagee4
- Outcome
- leaf yieldse4
- Direction
- higheste4
- Value
- 5170–6050 kg ha −1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e4“The highest leaf yields in the range of 5170–6050 kg ha −1 were obtained from the fully irrigated programme (VFR), from treatments with 40% reduction in irrigation water amount at any stage (V 1 FR; VF 1 R, VFR 1 ) and irrigation programme (FR) including omitted irrigation at vegetative stage and fully irrigated during the next two stages”
Claim · model-written summary
The irrigation programme FR, with omitted irrigation at vegetative stage, gave high leaf yields, 5170–6050 kg ha −1.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- irrigation programme (FR) including omitted irrigation at vegetative stagee4
- Outcome
- leaf yieldse4
- Direction
- higheste4
- Value
- 5170–6050 kg ha −1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e4“The highest leaf yields in the range of 5170–6050 kg ha −1 were obtained from the fully irrigated programme (VFR), from treatments with 40% reduction in irrigation water amount at any stage (V 1 FR; VF 1 R, VFR 1 ) and irrigation programme (FR) including omitted irrigation at vegetative stage and fully irrigated during the next two stages”
Claim · model-written summary
Seasonal evapotranspiration rate and leaf yield have a close linear relationship in each experimental year.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- seasonal evapotranspiration ratee6
- Outcome
- leaf yielde6
- Setting
- each of the experimental yearse6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e6“It was also determined that close linear relationships exist between seasonal evapotranspiration rate and leaf yield, and seasonal evapotranspiration deficit and relative yield reduction, during each of the experimental years”
Claim · model-written summary
Seasonal evapotranspiration deficit and relative yield reduction have a close linear relationship in each experimental year.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- seasonal evapotranspiration deficite6
- Outcome
- relative yield reductione6
- Setting
- each of the experimental yearse6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Virginia tobacco cultivar was used in the experiment”
e6“It was also determined that close linear relationships exist between seasonal evapotranspiration rate and leaf yield, and seasonal evapotranspiration deficit and relative yield reduction, during each of the experimental years”
The same questions in other papers
irrigation · yield · Nicotiana tabacum (tobacco)Positive and negative results
16 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- negative
19 papers more in this group
See all 23 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.