Abstract
This study aimed to assess the effect of different levels of nitrogen and potassium on tuberose's quantitative characteristics and identification of its associated pathogens in the Khuzestan province of Iran. The experiment was carried out at Safiabad Agricultural Research and Education and Natural Resources Center as a completely randomized factorial design with 3 replications. Factors included four levels of nitrogen (0, 100, 200 and 300 kg N ha-1) as Urea, three levels of potassium (0, 150 and 300 kg K2O ha-1) as potassium sulfate and a constant level of phosphorous (100 kg p 2O5 ha-1) as super phosphate. In current study, leaf nitrogen, spike length, leaf length, SPAD readings, leaf area index (LAI), optical depreciation coefficient, disease percentage and absorbed photosynthetically active radiation parameters were measured. The results showed that the effect of nitrogen on leaf length, SPAD readings, optical depreciation coefficient, absorbed photosynthetically active radiation, and disease percentage was significant at 0.05 probability level while on leaf nitrogen, spike length, and LAI was significant at 0.01 probability level. Potassium had no any significant effect on corresponding parameters in this experiment. In addition, the causal agents of necrotic spots on the tips and edges of the leaves and petals were identified as Botrytis sp., Curvularia sp., and Fusarium sp. while the main cause of necrotic spots on the petals was a thrips, which is probably either F.intonsa or F.schultzei species. Overall, the application of 100 kg ha-1 of nitrogen and no application of K2O are the best treatments and recommended for florists (in planting large bulbs).
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Claims 10
Claim · model-written summary
Nitrogen significantly affected tuberose leaf length, SPAD readings, and optical depreciation coefficient.
- Taxon
- Tuberose
Agave amicat0 - Treatment
- nitrogene0
- Outcome
- leaf length, SPAD readings, optical depreciation coefficiente0
- Qualifier
- 0.05 probability levele0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the effect of nitrogen on leaf length, SPAD readings, optical depreciation coefficient, absorbed photosynthetically active radiation, and disease percentage was significant at 0.05 probability level”
t0“Tuberose”
Claim · model-written summary
Nitrogen significantly affected absorbed photosynthetically active radiation and disease percentage.
- Taxon
- TuberoseAgave amicat0
- Treatment
- nitrogene0
- Outcome
- absorbed photosynthetically active radiation, and disease percentagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the effect of nitrogen on leaf length, SPAD readings, optical depreciation coefficient, absorbed photosynthetically active radiation, and disease percentage was significant at 0.05 probability level”
t0“Tuberose”
Claim · model-written summary
Nitrogen significantly affected tuberose leaf nitrogen, spike length, and LAI.
- Taxon
- TuberoseAgave amicat0
- Treatment
- nitrogene0
- Outcome
- leaf nitrogen, spike length, and LAIe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while on leaf nitrogen, spike length, and LAI was significant at 0.01 probability level.”
t0“Tuberose”
Claim · model-written summary
Potassium showed no significant effect on the reported tuberose parameters.
- Taxon
- TuberoseAgave amicat0
- Treatment
- Potassiume0
- Outcome
- corresponding parameterse0
- Direction
- no any significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium had no any significant effect on corresponding parameters in this experiment.”
t0“Tuberose”
Claim · model-written summary
Botrytis sp. was identified as a causal agent of necrotic spots on tuberose leaves and petals.
- Taxon
- TuberoseAgave amicat0
- Outcome
- necrotic spots on the tips and edges of the leaves and petalse0
BotrytisNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the causal agents of necrotic spots on the tips and edges of the leaves and petals were identified as Botrytis sp., Curvularia sp., and Fusarium sp.”
t0“Tuberose”
Claim · model-written summary
Curvularia sp. was identified as a causal agent of necrotic spots on tuberose leaves and petals.
- Taxon
- TuberoseAgave amicat0
- Interactor
- Curvularia sp.
Curvulariae0pathogen - Outcome
- necrotic spots on the tips and edges of the leaves and petalse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the causal agents of necrotic spots on the tips and edges of the leaves and petals were identified as Botrytis sp., Curvularia sp., and Fusarium sp.”
t0“Tuberose”
Claim · model-written summary
Fusarium sp. was identified as a causal agent of necrotic spots on tuberose leaves and petals.
- Taxon
- TuberoseAgave amicat0
- Outcome
- necrotic spots on the tips and edges of the leaves and petalse0
FusariumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the causal agents of necrotic spots on the tips and edges of the leaves and petals were identified as Botrytis sp., Curvularia sp., and Fusarium sp.”
t0“Tuberose”
Claim · model-written summary
A thrips, probably F.intonsa or F.schultzei, was the main cause of petal necrotic spots.
- Taxon
- TuberoseAgave amicat0
- Interactor
- a thripse0pest
- Outcome
- necrotic spots on the petalse0
- Qualifier
- probably either F.intonsa or F.schultzeie0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the main cause of necrotic spots on the petals was a thrips, which is probably either F.intonsa or F.schultzei species.”
t0“Tuberose”
Claim · model-written summary
The authors recommend 100 kg ha-1 nitrogen for florists planting large bulbs.
- Taxon
- TuberoseAgave amicat0
- Treatment
- 100 kg ha-1 of nitrogene0
- Outcome
- application of 100 kg ha-1 of nitrogene0
- Qualifier
- in planting large bulbse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 100 kg ha-1 of nitrogen and no application of K2O are the best treatments and recommended for florists (in planting large bulbs).”
t0“Tuberose”
Claim · model-written summary
The authors recommend no K2O application for florists planting large bulbs.
- Taxon
- TuberoseAgave amicat0
- Outcome
- no application of K2Oe0
- Qualifier
- in planting large bulbse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 100 kg ha-1 of nitrogen and no application of K2O are the best treatments and recommended for florists (in planting large bulbs).”
t0“Tuberose”