Abstract
Τhe aim of this study was to examine the potential of using biostimulants for the amelioration of deficit irrigation effects on field-grown lettuce plants growth parameters (cv. Doris (Romaine type) and cv. Manchester (Batavia type)). Therefore, five biostimulatory products that differed in their composition were evaluated, including seaweed extracts, amino acids, humic and fulvic acids, macronutrients, Si, and vegetable proteins, while a control treatment with no biostimulants applied on plants was also considered. Plants were subjected to three irrigation regimes, e.g., rain-fed plants (RF), deficit irrigation (I1; 50% of field capacity) and normal irrigation (I2; 100 of field capacity). The results indicate that the application of seaweed extracts, macronutrients, and amino acids (SW treatment) alleviated the negative effects of deficit irrigation on plant growth and chlorophyll content of Romaine-type plants. On the other hand, Batavia-type plants were more susceptible to water stress, since the highest crop yield plant was observed under the full irrigation treatment and the application of vegetal proteins and amino acids (VP treatment). In general, the application of biostimulants on the Romaine type improved plant growth under water shortage conditions compared with fully irrigated plants in almost all measurements, whereas the Batavia-type plants appeared to be more sensitive to deficit irrigation. Therefore, the ecofriendly practices of deficit irrigation and biostimulant application could be useful in leafy vegetable production on a genotype-depended manner.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 4
Claim · model-written summary
Seaweed extracts, macronutrients and amino acids alleviated deficit irrigation effects on Romaine lettuce growth and chlorophyll content.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- Romaine-typee0
- Treatment
- seaweed extracts, macronutrients, and amino acids (SW treatment)e0
- Outcome
- plant growth and chlorophyll contente0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of seaweed extracts, macronutrients, and amino acids (SW treatment) alleviated the negative effects of deficit irrigation on plant growth and chlorophyll content of Romaine-type plants”
t0“Lettuce Plants”
Claim · model-written summary
Batavia lettuce had its highest yield with full irrigation and vegetal proteins and amino acids.
- Taxon
- LettuceLactuca sativat0
- Material
- Batavia-typee1
- Treatment
- full irrigation treatment and the application of vegetal proteins and amino acids (VP treatment)e0
- Outcome
- crop yield plante0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest crop yield plant was observed under the full irrigation treatment and the application of vegetal proteins and amino acids (VP treatment)”
e1“On the other hand, Batavia-type plants”
t0“Lettuce Plants”
Claim · model-written summary
Batavia lettuce was more susceptible to water stress than Romaine lettuce.
- Taxon
- LettuceLactuca sativat0
- Material
- Batavia-typee0
- Outcome
- susceptible to water stresse0
- Direction
- moree0
- Comparator
- Romaine-typee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Batavia-type plants were more susceptible to water stress”
e1“Romaine-type plants”
t0“Lettuce Plants”
Claim · model-written summary
Biostimulants improved Romaine lettuce growth under water shortage relative to fully irrigated plants in almost all measurements.
- Taxon
- LettuceLactuca sativat0
- Material
- Romaine typee0
- Treatment
- application of biostimulantse0
- Outcome
- plant growthe0
- Direction
- improvede0
- Qualifier
- in almost all measurementse0
- Comparator
- fully irrigated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of biostimulants on the Romaine type improved plant growth under water shortage conditions compared with fully irrigated plants in almost all measurements”
t0“Lettuce Plants”
The same questions in other papers
macronutrient · physiology: pigments · Lactuca sativa (garden lettuce)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
other · physiology: pigments · Lactuca sativa (garden lettuce)Results differ
16 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- positive
14 papers more in this group
See all 18 papers →irrigation · yield · Lactuca sativa (garden lettuce)Positive and negative results
31 papers in the same direction as this paper · 23 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
53 papers more in this group
See all 57 papers →other · growth · Lactuca sativa (garden lettuce)Positive and negative results
65 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
74 papers more in this group
See all 78 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.