Abstract
Effect of Nitrogen Form and Type of Polyethylene Film Covering Tunnel on Nutrient Content of Hydroponically Grown Sweet Pepper The effect of nitrogen form (nitrate or nitrate-ammonia-amide) and a type of polyethylene film (two types, differing light transmission, light dispersion and PAR) covering a tunnel on the content of macroelements in the leaves of sweet pepper being in different stages of growth were studied. The plants were grown in rockwool slabs, using a drip fertigation system without recirculation. In each part of the tunnel there were two sets of cultivation gutters independently supplied with nutrient solution containing different forms of nitrogen: nitrate (100% N-NO 3 ), nitrate-ammonia-amide (50% N-NO 3 , 13% N-NH 4 , 37% N-NH 2 ). Dry matter and mineral composition were determined in the leaves with petioles. The leaves were collected in three stages of growth, e.g. intensive vegetative growth, flowering and full fruiting. The plants fed with nitrate N form contained more Ca and Mg, irrespective of a type of polyethylene film and stage of growth. N form had no effect on K content, except in plants being in flowering. In all stages of growth, irrespective of a type of polyethylene film, the plants fed with nitrate-ammonia-amide N form accumulated more N. The effect of a type of polyethylene film covering a tunnel on nutritional status of the plants being in stage of intensive vegetative growth or flowering was not univocal. However, in fruiting chemical composition, except N content in year 2007, did not depend on a tunnel part.
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Claims 5
Claim · model-written summary
Nitrate-fed sweet pepper had more leaf Ca and Mg than plants given nitrate-ammonia-amide, regardless of film or growth stage.
- Taxon
- Sweet Pepper
Capsicum annuumt0 - Organ / stage
- stage of growthe0
- Treatment
- nitrate N forme0
- Outcome
- Ca and Mge0
- Direction
- moree0
- Comparator
- nitrate-ammonia-amide N forme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants fed with nitrate N form contained more Ca and Mg, irrespective of a type of polyethylene film and stage of growth.”
e1“In all stages of growth, irrespective of a type of polyethylene film, the plants fed with nitrate-ammonia-amide N form accumulated more N.”
t0“Sweet Pepper”
Claim · model-written summary
Nitrogen form did not affect leaf K content except during flowering.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- N forme0
- Outcome
- K contente0
- Direction
- no effecte0
- Qualifier
- except in plants being in floweringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N form had no effect on K content, except in plants being in flowering.”
t0“Sweet Pepper”
Claim · model-written summary
Nitrate-ammonia-amide-fed plants accumulated more N at every growth stage, regardless of film.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- nitrate-ammonia-amide N forme0
- Outcome
- Ne0
- Direction
- moree0
- Qualifier
- In all stages of growth, irrespective of a type of polyethylene filme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all stages of growth, irrespective of a type of polyethylene film, the plants fed with nitrate-ammonia-amide N form accumulated more N.”
t0“Sweet Pepper”
Claim · model-written summary
Film type had inconsistent effects on nutritional status during vegetative growth and flowering.
- Taxon
- Sweet PepperCapsicum annuumt0
- Organ / stage
- intensive vegetative growth or floweringe0
- Treatment
- type of polyethylene filme0
- Outcome
- nutritional statuse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of a type of polyethylene film covering a tunnel on nutritional status of the plants being in stage of intensive vegetative growth or flowering was not univocal.”
t0“Sweet Pepper”
Claim · model-written summary
At fruiting, leaf chemical composition generally did not depend on tunnel part, except N in 2007.
- Taxon
- Sweet PepperCapsicum annuumt0
- Outcome
- chemical compositione0
- Direction
- did not depende0
- Qualifier
- except N content in year 2007e0
- Setting
- a tunnel parte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, in fruiting chemical composition, except N content in year 2007, did not depend on a tunnel part.”
t0“Sweet Pepper”
The same questions in other papers
nitrogen · nutrient: content · Capsicum annuum (sweet pepper)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
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See all 12 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.