Abstract
The aim of this study was to demonstrate the potential use of biostimulants, based on the hypothesis that the use of biostimulants can be an alternative to ensure sustainability in agricultural production. In the study, red lettuce (Lactuca sativa cv Crispa), which attracts consumer attention due to its color, was used as a model crop and seven biostimulants at different levels were applied to lettuce in two growing seasons. The effects of the biostimulants on yield, quality, vitamin C, macro-micro nutrient content and nitrate accumulation were investigated. In the first season (November–January), the biostimulant containing gamma-aminobutyric acid and L-glutamic acid gave better results than the conventional treatment in terms of marketable leaf number, average head weight and marketable yield, which are important yield criteria. In addition, measurements of root length, root collar diameter and fresh root weight of the biostimulants containing Lactobacillus acidophilus showed that the biostimulants supported plant growth more than the conventional treatment in the first growing season. The dominance of the conventional treatment in the second growing season (January–April) with relatively colder weather conditions showed that the efficacy of biostimulants was related to air temperature. On the other hand, biostimulants containing Lactobacillus acidophilus and Lactobacillus paracasei increased vitamin C content and red color intensity of lettuce. It was concluded that biostimulants will contribute to sustainable agriculture by helping to reduce the use of synthetic chemical fertilizers.
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Claims 7
Claim · model-written summary
The gamma-aminobutyric acid and L-glutamic acid biostimulant improved marketable leaf number, head weight and marketable yield over conventional treatment in the first season.
Verbatim
e0“In the first season (November–January), the biostimulant containing gamma-aminobutyric acid and L-glutamic acid gave better results than the conventional treatment in terms of marketable leaf number, average head weight and marketable yield”
t0“red lettuce”
Claim · model-written summary
Lactobacillus acidophilus biostimulants supported root growth measures more than conventional treatment in the first season.
- Taxon
- red lettucet0
- Treatment
- biostimulants containing Lactobacillus acidophiluse0
- Interactor
- Lactobacillus acidophilus
Lactobacillus acidophiluse0symbiont - Outcome
- root length, root collar diameter and fresh root weighte0
- Direction
- more thane0
- Comparator
- conventional treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“measurements of root length, root collar diameter and fresh root weight of the biostimulants containing Lactobacillus acidophilus showed that the biostimulants supported plant growth more than the conventional treatment in the first growing season.”
t0“red lettuce”
Claim · model-written summary
Conventional treatment performed better in the colder second growing season.
Verbatim
e0“The dominance of the conventional treatment in the second growing season (January–April) with relatively colder weather conditions showed that the efficacy of biostimulants was related to air temperature.”
t0“red lettuce”
Claim · model-written summary
Biostimulant efficacy was related to air temperature.
- Taxon
- red lettucet0
- Treatment
- biostimulantse0
- Outcome
- efficacy of biostimulantse0
- Qualifier
- air temperaturee0
Not reportedDirection
Verbatim
e0“the efficacy of biostimulants was related to air temperature.”
t0“red lettuce”
Claim · model-written summary
Lactobacillus acidophilus biostimulants increased lettuce vitamin C content and red color intensity.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- biostimulants containing Lactobacillus acidophiluse0
- Interactor
- Lactobacillus acidophilusLactobacillus acidophiluse0symbiont
- Outcome
- vitamin C content and red color intensitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biostimulants containing Lactobacillus acidophilus and Lactobacillus paracasei increased vitamin C content and red color intensity of lettuce.”
Claim · model-written summary
Lactobacillus paracasei biostimulants increased lettuce vitamin C content and red color intensity.
- Taxon
- lettuceLactuca sativae0
- Treatment
- Lactobacillus paracaseie0
- Interactor
- Lactobacillus paracasei
Lacticaseibacillus paracaseie0symbiont - Outcome
- vitamin C content and red color intensitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biostimulants containing Lactobacillus acidophilus and Lactobacillus paracasei increased vitamin C content and red color intensity of lettuce.”
Claim · model-written summary
The authors concluded that biostimulants could help reduce synthetic chemical fertilizer use.
Verbatim
e0“It was concluded that biostimulants will contribute to sustainable agriculture by helping to reduce the use of synthetic chemical fertilizers.”
t0“red lettuce”
The same questions in other papers
other · quality: phytochemicals · Lactuca sativa (garden lettuce)Positive and negative results
11 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
10 papers more in this group
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.