Abstract
It has been hypothesized that the uptake of organic as opposed to inorganic nitrogen compounds found in wastewater can be properly substituted for plant nutrients. The objective of this study was to compare effects of applying monosodium glutamate wastewater (MGW) and ammonium nitrate (NH4NO3) (AN) on nitrogen metabolism and growth of lettuce. The results showed that while NH4NO3 (AN), NO3-, nitrite content and NR activity increased the protein content of lettuce. Applying MGW with a high concentration of 17 amino acids and macro- and microelements improved the fresh weights of shoot and root as well as the protein content of lettuce. Antioxidant activities were not affected by AN and MGW, and their interaction effects only increased POD after 8 weeks. In conclusion, substituting a portion of the chemical fertilizers with MGW improved lettuce growth, but did not increase NO3- accumulation in leaves.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Ammonium nitrate increased lettuce protein content.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- NH4NO3 (AN)e0
- Outcome
- protein content of lettucee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“NH4NO3 (AN), NO3-, nitrite content and NR activity increased the protein content of lettuce.”
Claim · model-written summary
Monosodium glutamate wastewater improved lettuce shoot and root fresh weights.
- Taxon
- lettuceLactuca sativat0
- Organ / stage
- shoot and roote0
- Treatment
- Applying MGWe0
- Outcome
- fresh weights of shoot and roote0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“Applying MGW with a high concentration of 17 amino acids and macro- and microelements improved the fresh weights of shoot and root as well as the protein content of lettuce.”
Claim · model-written summary
Monosodium glutamate wastewater improved lettuce protein content.
- Taxon
- lettuceLactuca sativat0
- Treatment
- Applying MGWe0
- Outcome
- protein content of lettucee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“Applying MGW with a high concentration of 17 amino acids and macro- and microelements improved the fresh weights of shoot and root as well as the protein content of lettuce.”
Claim · model-written summary
Neither ammonium nitrate nor monosodium glutamate wastewater affected antioxidant activities.
- Taxon
- lettuceLactuca sativat0
- Treatment
- AN and MGWe0
- Outcome
- Antioxidant activitiese0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“Antioxidant activities were not affected by AN and MGW”
Claim · model-written summary
The interaction of ammonium nitrate and wastewater increased POD after eight weeks.
- Taxon
- lettuceLactuca sativat0
- Treatment
- their interaction effectse0
- Outcome
- PODe0
- Direction
- increasede0
- Qualifier
- after 8 weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“their interaction effects only increased POD after 8 weeks.”
Claim · model-written summary
Substituting some chemical fertilizer with wastewater improved lettuce growth.
- Taxon
- lettuceLactuca sativat0
- Treatment
- substituting a portion of the chemical fertilizers with MGWe0
- Outcome
- lettuce growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“substituting a portion of the chemical fertilizers with MGW improved lettuce growth”
Claim · model-written summary
Substituting some chemical fertilizer with wastewater did not increase nitrate accumulation in leaves.
- Taxon
- lettuceLactuca sativat0
- Organ / stage
- leavese0
- Treatment
- substituting a portion of the chemical fertilizers with MGWe0
- Outcome
- NO3- accumulation in leavese0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“substituting a portion of the chemical fertilizers with MGW improved lettuce growth, but did not increase NO3- accumulation in leaves.”
The same questions in other papers
monosodium glutamate · growth · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
fertilization · molecular: metabolites · Lactuca sativa (garden lettuce)Positive and negative results
11 papers in the same direction as this paper · 51 in the opposite direction
- positive
- positive
- positive
59 papers more in this group
See all 63 papers →fertilization · growth · Lactuca sativa (garden lettuce)Positive and negative results
201 papers in the same direction as this paper · 45 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
244 papers more in this group
See all 248 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.