Abstract
The objective of this study was to evaluate the production and quality of ‘Sugar Baby’ watermelon fruits under different strategies of irrigation with saline water and nitrogen (N) fertilization in an experiment conducted in a protected environment in Campina Grande, Paraíba, Brazil. The experimental design adopted was in blocks with a 6 × 2 factorial scheme, corresponding to six strategies of irrigation with saline water applied at different phenological stages of the crop (SE irrigation with low-salinity water throughout the cycle; salt stress at the vegetative stage VE; vegetative and flowering VE/FL; flowering FL; fruiting FR; fruit maturation MAT) and two N doses (50 and 100% of the recommendation, equivalent to 50 and 100 mg of N kg-1 of soil) with five replicates. Two levels of irrigation water salinity were studied, one with low and the other with high electrical conductivity (ECw = 0.8 and 3.2 dS m-1). The salt stress applied at the vegetative and flowering stages reduced the contents of ascorbic acid and total soluble solids in ‘Sugar Baby’ watermelon fruits. The dose equivalent to 50% of the N recommendation promoted a greater fresh weight of watermelon fruits. Fertilization with 100% of N increased the hydrogen potential of watermelon fruits under salt stress at the vegetative and flowering stages. The anthocyanin content of watermelon fruits decreased under salt stress, regardless of the development stage; however, with 50% of recommendation of N, there was an increase in this variable.
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Claims 6
Claim · model-written summary
Salt stress at vegetative and flowering stages reduced fruit ascorbic acid content.
- Taxon
- watermelon
Citrullus lanatuse0 - Material
- ‘Sugar Baby’e0
- Treatment
- salt stress applied at the vegetative and flowering stagese0
- Outcome
- contents of ascorbic acide0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt stress applied at the vegetative and flowering stages reduced the contents of ascorbic acid and total soluble solids in ‘Sugar Baby’ watermelon fruits”
Claim · model-written summary
Salt stress at vegetative and flowering stages reduced fruit soluble solids.
- Taxon
- watermelonCitrullus lanatuse0
- Material
- ‘Sugar Baby’e0
- Treatment
- salt stress applied at the vegetative and flowering stagese0
- Outcome
- total soluble solidse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt stress applied at the vegetative and flowering stages reduced the contents of ascorbic acid and total soluble solids in ‘Sugar Baby’ watermelon fruits”
Claim · model-written summary
A nitrogen dose of 50% of the recommendation increased watermelon fruit fresh weight.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- 50% of the N recommendatione0
- Outcome
- fresh weight of watermelon fruitse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose equivalent to 50% of the N recommendation promoted a greater fresh weight of watermelon fruits”
Claim · model-written summary
Full nitrogen fertilization increased watermelon fruit hydrogen potential under vegetative and flowering salt stress.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- 100% of Ne0
- Outcome
- hydrogen potential of watermelon fruitse0
- Direction
- increasede0
- Qualifier
- under salt stress at the vegetative and flowering stagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with 100% of N increased the hydrogen potential of watermelon fruits under salt stress at the vegetative and flowering stages”
Claim · model-written summary
Salt stress reduced watermelon fruit anthocyanin content regardless of development stage.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- salt stresse0
- Outcome
- anthocyanin content of watermelon fruitse0
- Direction
- decreasede0
- Qualifier
- regardless of the development stagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The anthocyanin content of watermelon fruits decreased under salt stress, regardless of the development stage”
Claim · model-written summary
A 50% recommended nitrogen dose increased watermelon fruit anthocyanin content.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- 50% of recommendation of Ne0
- Outcome
- anthocyanin contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The anthocyanin content of watermelon fruits decreased under salt stress, regardless of the development stage; however, with 50% of recommendation of N, there was an increase in this variable”
The same questions in other papers
salinity · quality: sugar starch · Citrullus lanatus (watermelon)Results differ
1 in the opposite direction
- positive
salinity · quality: phytochemicals · Citrullus lanatus (watermelon)Positive and negative results
1 in the opposite direction
- positive
stage · quality: phytochemicals · Citrullus lanatus (watermelon)Positive and negative results
1 in the opposite direction
- positive
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.