Abstract
Two field experiments were carried out in 2006 and 2007 summer seasons at Sakha Agric. Res. Station (ARC) to study the effect of soil and foliar fertilization on growth, yield and its components of sunflower c.v. Sakha 53. Nitrogen fertilizer rates at 15, 30 and 45 kg N/fed were applied alone or along with foliar spray of urea (2%), single superphosphate (4%) and a mixture of micronutrients (100 ppm Fe + 140 ppm Zn + 120 ppm Mn). Results indicated that vegetative growth traits at 65 days after planting were significantly affected by nitrogen fertilizer rates and foliar spray nutrient application. Plant height, leaf area and dry matter/plant, as well as chlorophyll a and total photosynthetic pigments in leaves were significantly increased with increasing nitrogen level. Foliar nutrient application of urea remarkably improved growth traits. Flowering date was delayed with increasing nitrogen rates and foliar spraying of micronutrient. Increasing nitrogen fertilizer up to 45 kg N/fed led to significant increases in plant height, stem diameter, head diameter, 100-seed weight, seed yield/plant and seed yield/fed However, seed oil% was decreased with increasing nitrogen fertilizer rates. Oil yield/fed was significantly increased with increasing fertilizer nitrogen rate. It could be concluded that nitrogen applied at of 45 or 30 kg/fed with spraying with urea (2%) gave the highest oil yield/fed.
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Claims 11
Claim · model-written summary
Vegetative growth traits of sunflower at 65 days after planting were significantly affected by nitrogen fertilizer rates and foliar nutrient spray.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- nitrogen fertilizer rates and foliar spray nutrient applicatione1
- Outcome
- vegetative growth traitse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“vegetative growth traits at 65 days after planting were significantly affected by nitrogen fertilizer rates and foliar spray nutrient application”
Claim · model-written summary
Plant height, leaf area and dry matter per plant of sunflower significantly increased with increasing nitrogen level.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- increasing nitrogen levele1
- Outcome
- Plant height, leaf area and dry matter/plante1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Plant height, leaf area and dry matter/plant, as well as chlorophyll a and total photosynthetic pigments in leaves were significantly increased with increasing nitrogen level”
Claim · model-written summary
Chlorophyll a and total photosynthetic pigments in sunflower leaves significantly increased with increasing nitrogen level.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- leavese1
- Treatment
- increasing nitrogen levele1
- Outcome
- chlorophyll a and total photosynthetic pigmentse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Plant height, leaf area and dry matter/plant, as well as chlorophyll a and total photosynthetic pigments in leaves were significantly increased with increasing nitrogen level”
Claim · model-written summary
Foliar nutrient application of urea markedly improved sunflower growth traits.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Foliar nutrient application of ureae1
- Outcome
- growth traitse1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Foliar nutrient application of urea remarkably improved growth traits”
Claim · model-written summary
Flowering date of sunflower was delayed with increasing nitrogen rates.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- increasing nitrogen ratese1
- Outcome
- Flowering datee1
- Direction
- delayede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Flowering date was delayed with increasing nitrogen rates and foliar spraying of micronutrient”
Claim · model-written summary
Flowering date of sunflower was delayed by foliar spraying of micronutrients.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- foliar spraying of micronutriente1
- Outcome
- Flowering datee1
- Direction
- delayede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Flowering date was delayed with increasing nitrogen rates and foliar spraying of micronutrient”
Claim · model-written summary
Increasing nitrogen fertilizer up to 45 kg N/fed significantly increased sunflower plant height, stem diameter and head diameter.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Increasing nitrogen fertilizer up to 45 kg N/fede1
- Outcome
- plant height, stem diameter, head diametere1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Increasing nitrogen fertilizer up to 45 kg N/fed led to significant increases in plant height, stem diameter, head diameter, 100-seed weight, seed yield/plant and seed yield/fed”
Claim · model-written summary
Increasing nitrogen fertilizer up to 45 kg N/fed significantly increased sunflower 100-seed weight, seed yield per plant and seed yield per feddan.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Increasing nitrogen fertilizer up to 45 kg N/fede1
- Outcome
- 100-seed weight, seed yield/plant and seed yield/fede1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Increasing nitrogen fertilizer up to 45 kg N/fed led to significant increases in plant height, stem diameter, head diameter, 100-seed weight, seed yield/plant and seed yield/fed”
Claim · model-written summary
Seed oil percentage of sunflower decreased with increasing nitrogen fertilizer rates.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- increasing nitrogen fertilizer ratese1
- Outcome
- seed oil%e1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“seed oil% was decreased with increasing nitrogen fertilizer rates”
Claim · model-written summary
Oil yield per feddan of sunflower significantly increased with increasing nitrogen fertilizer rate.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- increasing fertilizer nitrogen ratee1
- Outcome
- Oil yield/fede1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“Oil yield/fed was significantly increased with increasing fertilizer nitrogen rate”
Claim · model-written summary
The authors conclude that nitrogen at 45 or 30 kg/fed with urea (2%) foliar spray gave the highest oil yield per feddan.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- nitrogen applied at of 45 or 30 kg/fed with spraying with urea (2%)e1
- Outcome
- highest oil yield/fede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower c.v. Sakha 53”
e1“nitrogen applied at of 45 or 30 kg/fed with spraying with urea (2%) gave the highest oil yield/fed”
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