Abstract
To improve the water and nutrient use efficiency and also to reduce the labour cost in tobacco (Nicotiana tabacum L.) nursery raising, experiment on micro sprinklers for tobacco nurseries was conducted at CTRI Nursery block, Rajahmundry, Andhra Pradesh during 2007 and 2008. From the results of the experiment, it is concluded that the optimum spacing between laterals is 2.5-3.0 m and the spacing between micro sprinklers is 2.5–3.0 m and for this spacing 4 sprinklers are required for irrigating two tobacco nursery beds. The micro sprinkler system saves 24% and 35% of irrigation water at nursery bed level and at total system level respectively in comparison to rose can watering system. Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering. Micro sprinklers increases the weight, height, root volume and number of transplantable seedlings by 19%, 16%, 31%, 18% respectively over the rose can watering. Installing micro sprinkler irrigation system saves an amount of ` 60 000/ha towards labour. Micro sprinkler system is an economically viable alternate to rose can watering and gives net present worth of ₹ 94 265/ha/year with a benefit cost ratio of 2.37 at 2011 prices.
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Claims 16
Claim · model-written summary
The reported optimum lateral and sprinkler spacing is 2.5-3.0 m and 2.5–3.0 m.
- Taxon
- tobacco (Nicotiana tabacum)
Nicotiana tabacumt0 - Outcome
- optimum spacinge0
- Value
- 2.5-3.0 me0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“optimum spacing between laterals is 2.5-3.0 m and the spacing between micro sprinklers is 2.5–3.0 m and for this spacing 4 sprinklers are required for irrigating two tobacco nursery beds”
Claim · model-written summary
Micro sprinklers saved 24% irrigation water at nursery bed level.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- micro sprinkler systeme0
- Outcome
- irrigation water at nursery bed levele0
- Direction
- savese0
- Value
- 24%e0
- Comparator
- rose can watering systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“micro sprinkler system saves 24% and 35% of irrigation water at nursery bed level and at total system level respectively in comparison to rose can watering system”
Claim · model-written summary
Micro sprinklers saved 35% irrigation water at total system level.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- micro sprinkler systeme0
- Outcome
- irrigation watere0
- Direction
- savese0
- Value
- 35%e0
- Qualifier
- total system levele0
- Comparator
- rose can watering systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“micro sprinkler system saves 24% and 35% of irrigation water at nursery bed level and at total system level respectively in comparison to rose can watering system”
Claim · model-written summary
Plant N concentration increased 14% with micro sprinklers.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- concentrations of the total plante0
- Direction
- increasese0
- Value
- 14%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering”
Claim · model-written summary
Plant P concentration increased 10%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- P, K concentrationse0
- Direction
- increasese0
- Value
- 10%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering”
Claim · model-written summary
Plant K concentration increased 11%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- K concentrationse0
- Direction
- increasese0
- Value
- 11%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering”
Claim · model-written summary
N uptake per unit area increased 50%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- uptake per unit areae0
- Direction
- increasese0
- Value
- 50%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering”
Claim · model-written summary
P uptake per unit area increased 45%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- uptake per unit areae0
- Direction
- increasese0
- Value
- 45%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering”
Claim · model-written summary
K uptake per unit area increased 47%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- uptake per unit areae0
- Direction
- increasese0
- Value
- 47%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the N, P, K concentrations of the total plant to an extent of 14%, 10%, 11% and uptake per unit area to an extent of 50%, 45%, 47% respectively over the rose can watering”
Claim · model-written summary
Seedling weight increased 19%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- weighte0
- Direction
- increasese0
- Value
- 19%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the weight, height, root volume and number of transplantable seedlings by 19%, 16%, 31%, 18% respectively over the rose can watering”
Claim · model-written summary
Seedling height increased 16%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- heighte0
- Direction
- increasese0
- Value
- 16%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the weight, height, root volume and number of transplantable seedlings by 19%, 16%, 31%, 18% respectively over the rose can watering”
Claim · model-written summary
Seedling root volume increased 31%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- root volumee0
- Direction
- increasese0
- Value
- 31%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the weight, height, root volume and number of transplantable seedlings by 19%, 16%, 31%, 18% respectively over the rose can watering”
Claim · model-written summary
Transplantable seedling number increased 18%.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- Micro sprinklerse0
- Outcome
- number of transplantable seedlingse0
- Direction
- increasese0
- Value
- 18%e0
- Comparator
- rose can wateringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Micro sprinklers increases the weight, height, root volume and number of transplantable seedlings by 19%, 16%, 31%, 18% respectively over the rose can watering”
Claim · model-written summary
Installing micro sprinklers saved 60 000/ha in labour.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Outcome
- laboure0
- Direction
- savese0
- Value
- 60 000/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“Installing micro sprinkler irrigation system saves an amount of ` 60 000/ha towards labour”
Claim · model-written summary
The system gave net present worth of ₹ 94 265/ha/year.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Outcome
- net present worthe0
- Value
- ₹ 94 265/ha/yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“gives net present worth of ₹ 94 265/ha/year with a benefit cost ratio of 2.37 at 2011 prices”
Claim · model-written summary
The benefit cost ratio was 2.37.
- Taxon
- tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Outcome
- benefit cost ratioe0
- Value
- 2.37e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco (Nicotiana tabacum)”
e0“benefit cost ratio of 2.37 at 2011 prices”
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See all 21 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.