Abstract
The effect of plant density and nitrogen fertilizer on canopy light interception and on flowering was investigated in hemp (Cannabis sativa L.) cv. ‘Kompolti’ Crop grown at initial densities of 50, 150 and 250 plants/m2 at the Mashhad and 30, 90 and 150 plants/m2 at the Shirvan. Nitrogen fertilizer was applied before and 45 days after sowing at a rates of 50 and 200 kg/ha at the Mashhad, and 50, 150 and 250 kg/ha at the Shirvan. Rate of canopy development increased with increasing plant density and nitrogen fertilizer in both sites. At the Mashhad, interception of 90% of light was attained at 380 to 665 degree days (base 2°C) from emergence for the crop grown at different densities. At Shirvan, rate of canopy development was slower. Interception of 90% of light was attained at 586 degree days from emergence for the crop grown at 30 plants/m2 and at 712 degree days for the crop grown at 150 plants/m2, probably as a result of cold weather. Nitrogen fertilizer in a similar way as plant density increased light interception. Maximum light interception did not depend on plant density and nitrogen fertilizer and was about 95%. In both sites, the flowering date was later with increasing plant density. Dates of 75% flowering for the initial densities of 50, 150 and 250 plants/m2 in Mashhad and 30, 90 and 150 plants/m2 in Shirvan were, respectively 26 August, 1, 6, 6, 11 and 12 September. Independent of plant density, canopy light interception started to decline at about 150 degree days after flowering, reaching 58 to 75% at about 700 degree days post-flowering. Morphological characteristics at both sites were highly correlated with plant sexual, plant population and nitrogen fertilizer. Highest stem, leaf and inflorescence yield were obtained in Mashhad at 250 plant/m-2 and in Shirvan at 150 plant m-2 when 200 kg N ha-1 in Mashhad and 250 kg N/ha in Shirvan was used. Above ground dry matter increased at both sites with increasing plant density and nitrogen supply. The results presented here can be used to account for the effect of a wide range of plant densities and nitrogen fertilizer for simulation of the course of light interception by a hemp crop.
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Claims 13
Claim · model-written summary
Canopy development rate increased with plant density and nitrogen fertilizer at both sites.
- Taxon
- hemp
Cannabis sativa subsp. sativae0 - Material
- Kompoltie0
- Treatment
- increasing plant density and nitrogen fertilizere1
- Outcome
- Rate of canopy developmente1
- Direction
- increasede1
- Setting
- both sitese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e1“Rate of canopy development increased with increasing plant density and nitrogen fertilizer in both sites”
Claim · model-written summary
At Shirvan, 90% light interception was reached at 586 degree days from emergence at 30 plants/m2.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- 30 plants/m2e4
- Outcome
- interception of 90% of lighte4
- Value
- 586 degree dayse4
- Qualifier
- probably as a result of cold weathere4
- Setting
- Shirvane3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e3“At Shirvan, rate of canopy development was slower”
e4“Interception of 90% of light was attained at 586 degree days from emergence for the crop grown at 30 plants/m2 and at 712 degree days for the crop grown at 150 plants/m2, probably as a result of cold weather”
Claim · model-written summary
At Shirvan, 90% light interception was reached at 712 degree days from emergence at 150 plants/m2.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- 150 plants/m2e4
- Outcome
- interception of 90% of lighte4
- Value
- 712 degree dayse4
- Qualifier
- probably as a result of cold weathere4
- Setting
- Shirvane3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e3“At Shirvan, rate of canopy development was slower”
e4“Interception of 90% of light was attained at 586 degree days from emergence for the crop grown at 30 plants/m2 and at 712 degree days for the crop grown at 150 plants/m2, probably as a result of cold weather”
Claim · model-written summary
Nitrogen fertilizer increased light interception in a similar way to plant density.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- Nitrogen fertilizere5
- Outcome
- light interceptione5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e5“Nitrogen fertilizer in a similar way as plant density increased light interception”
Claim · model-written summary
Maximum light interception of about 95% did not depend on plant density or nitrogen fertilizer.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Outcome
- Maximum light interceptione6
- Value
- about 95%e6
- Qualifier
- did not depend on plant density and nitrogen fertilizere6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e6“Maximum light interception did not depend on plant density and nitrogen fertilizer and was about 95%”
Claim · model-written summary
Flowering date was later with increasing plant density at both sites.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- increasing plant densitye7
- Outcome
- flowering datee7
- Direction
- latere7
- Setting
- both sitese7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e7“In both sites, the flowering date was later with increasing plant density”
Claim · model-written summary
Dates of 75% flowering ranged from 26 August to 12 September across the initial densities at Mashhad and Shirvan.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Outcome
- Dates of 75% floweringe4
- Value
- 26 August, 1, 6, 6, 11 and 12 Septembere4
- Qualifier
- for the initial densities of 50, 150 and 250 plants/m2 in Mashhade4
- Setting
- Mashhade4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e4“Dates of 75% flowering for the initial densities of 50, 150 and 250 plants/m2 in Mashhad and 30, 90 and 150 plants/m2 in Shirvan were, respectively 26 August, 1, 6, 6, 11 and 12 September”
Claim · model-written summary
Canopy light interception started to decline at about 150 degree days after flowering, independent of plant density.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Outcome
- canopy light interceptione5
- Direction
- declinee5
- Value
- 150 degree days after floweringe5
- Qualifier
- Independent of plant densitye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e5“Independent of plant density, canopy light interception started to decline at about 150 degree days after flowering”
Claim · model-written summary
Canopy light interception reached 58 to 75% at about 700 degree days after flowering.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Outcome
- canopy light interceptione5
- Value
- 58 to 75%e6
- Qualifier
- about 700 degree days post-floweringe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e5“Independent of plant density, canopy light interception started to decline at about 150 degree days after flowering”
e6“reaching 58 to 75% at about 700 degree days post-flowering”
Claim · model-written summary
Morphological characteristics were highly correlated with plant sex, plant population and nitrogen fertilizer at both sites.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- nitrogen fertilizere4
- Outcome
- Morphological characteristicse4
- Setting
- both sitese4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e4“Morphological characteristics at both sites were highly correlated with plant sexual, plant population and nitrogen fertilizer”
Claim · model-written summary
Stem, leaf and inflorescence yield was highest at Mashhad at 250 plants/m2 with 200 kg N ha-1.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- 250 plant/m-2e4
- Outcome
- stem, leaf and inflorescence yielde4
- Direction
- Higheste4
- Qualifier
- when 200 kg N ha-1 in Mashhade4
- Setting
- Mashhade4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e4“Highest stem, leaf and inflorescence yield were obtained in Mashhad at 250 plant/m-2 and in Shirvan at 150 plant m-2 when 200 kg N ha-1 in Mashhad and 250 kg N/ha in Shirvan was used”
Claim · model-written summary
Stem, leaf and inflorescence yield was highest at Shirvan at 150 plants/m2 with 250 kg N/ha.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- 150 plant m-2e4
- Outcome
- stem, leaf and inflorescence yielde4
- Direction
- Higheste4
- Qualifier
- 250 kg N/ha in Shirvane4
- Setting
- Shirvane4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e4“Highest stem, leaf and inflorescence yield were obtained in Mashhad at 250 plant/m-2 and in Shirvan at 150 plant m-2 when 200 kg N ha-1 in Mashhad and 250 kg N/ha in Shirvan was used”
Claim · model-written summary
Above-ground dry matter increased at both sites with increasing plant density and nitrogen supply.
- Taxon
- hempCannabis sativa subsp. sativae0
- Material
- Kompoltie0
- Treatment
- increasing plant density and nitrogen supplye4
- Outcome
- Above ground dry mattere4
- Direction
- increasede4
- Setting
- both sitese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemp (Cannabis sativa L.) cv. ‘Kompolti’”
e4“Above ground dry matter increased at both sites with increasing plant density and nitrogen supply”
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10 papers in the same direction as this paper · 3 in the opposite direction
- no effect
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See all 14 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.