Abstract
Aim of the study: To evaluate the influence of irrigation management strategies and nitrogen (N) on baby lettuce growth, yield, and water use efficiency in a protected environment. Area of study: Botucatu, SP, Brazil. Material and methods: The experiments were conducted in two consecutive cycles, and the treatments corresponded to the combination of irrigation management strategies with N doses. Irrigation strategies comprised 3 possibilities: continuous irrigation (Cont); intermittent irrigation with three irrigation pulses at one-hour intervals (Int1); and intermittent irrigation with irrigation depth split and applied at 7:00, 11:00, and 15:00 h (Int2). Two N doses were evaluated, 100 and 130 kg/ha of N, applied in daily fertigation according to the irrigation management strategies. Main results: Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency. The N dose of 130 kg/ha increased the total yield (51.61 t/ha), marketable yield (48.98 t/ha), and water use efficiencies of total yield (53.60 kg/m³) and marketable yield (50.88 kg/m³) only in the first crop cycle. Research highlights: The use of intermittence in irrigation management proved to be more efficient in obtaining high yields and maximized the efficiency of use of water as a factor of production.
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Claims 11
Claim · model-written summary
Intermittent irrigation promoted the highest vegetative growth of baby lettuce.
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- vegetative growthe1
- Direction
- higheste1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
Intermittent irrigation increased leaf water content of baby lettuce.
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- leaf water contente1
- Direction
- increasede1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
Intermittent irrigation increased total yield of baby lettuce in the first cycle (49.55 and 55.30 t/ha).
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- total yielde1
- Direction
- increasede1
- Value
- 49.55 and 55.30e1
- Qualifier
- in the first and second cycles, respectivelye1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
Intermittent irrigation increased total yield of baby lettuce in the second cycle (46.83 and 49.50 t/ha).
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- total yielde1
- Direction
- increasede1
- Value
- 46.83 and 49.50e1
- Qualifier
- in the first and second cycles, respectivelye1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
Intermittent irrigation increased marketable yield of baby lettuce in the first cycle (46.77 and 52.44 t/ha).
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- marketable yielde1
- Direction
- increasede1
- Value
- 46.77 and 52.44e1
- Qualifier
- in the first and second cycles, respectivelye1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
Intermittent irrigation increased marketable yield of baby lettuce in the second cycle (45.11 and 47.17 t/ha).
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- marketable yielde1
- Direction
- increasede1
- Value
- 45.11 and 47.17e1
- Qualifier
- in the first and second cycles, respectivelye1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
Intermittent irrigation optimized water use efficiency of baby lettuce.
- Taxon
- baby lettucee0
- Treatment
- Intermittent irrigation strategies (Int1 and Int2)e1
- Outcome
- water use efficiencye1
- Direction
- optimizinge1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“Intermittent irrigation strategies (Int1 and Int2) promoted the highest vegetative growth, increased leaf water content, and increased total yield (49.55 and 55.30; 46.83 and 49.50 t/ha) and marketable yield (46.77 and 52.44; 45.11 and 47.17 t/ha) in the first and second cycles, respectively, in addition to optimizing water use efficiency”
Claim · model-written summary
The 130 kg/ha N dose increased total yield of baby lettuce (51.61 t/ha) in the first crop cycle only.
- Taxon
- baby lettucee0
- Treatment
- N dose of 130 kg/hae1
- Outcome
- total yielde1
- Direction
- increasede1
- Value
- 51.61 t/hae1
- Qualifier
- only in the first crop cyclee1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“The N dose of 130 kg/ha increased the total yield (51.61 t/ha), marketable yield (48.98 t/ha), and water use efficiencies of total yield (53.60 kg/m³) and marketable yield (50.88 kg/m³) only in the first crop cycle”
Claim · model-written summary
The 130 kg/ha N dose increased marketable yield of baby lettuce (48.98 t/ha) in the first crop cycle only.
- Taxon
- baby lettucee0
- Treatment
- N dose of 130 kg/hae1
- Outcome
- marketable yielde1
- Direction
- increasede1
- Value
- 48.98 t/hae1
- Qualifier
- only in the first crop cyclee1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“The N dose of 130 kg/ha increased the total yield (51.61 t/ha), marketable yield (48.98 t/ha), and water use efficiencies of total yield (53.60 kg/m³) and marketable yield (50.88 kg/m³) only in the first crop cycle”
Claim · model-written summary
The 130 kg/ha N dose increased water use efficiency of total yield of baby lettuce (53.60 kg/m³) in the first crop cycle only.
- Taxon
- baby lettucee0
- Treatment
- N dose of 130 kg/hae1
- Outcome
- water use efficiencies of total yielde1
- Direction
- increasede1
- Value
- 53.60 kg/m³e1
- Qualifier
- only in the first crop cyclee1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“The N dose of 130 kg/ha increased the total yield (51.61 t/ha), marketable yield (48.98 t/ha), and water use efficiencies of total yield (53.60 kg/m³) and marketable yield (50.88 kg/m³) only in the first crop cycle”
Claim · model-written summary
The 130 kg/ha N dose increased water use efficiency of marketable yield of baby lettuce (50.88 kg/m³) in the first crop cycle only.
- Taxon
- baby lettucee0
- Treatment
- N dose of 130 kg/hae1
- Outcome
- marketable yielde1
- Direction
- increasede1
- Value
- 50.88 kg/m³e1
- Qualifier
- only in the first crop cyclee1
Not reportedComparator
Verbatim
e0“on baby lettuce growth”
e1“The N dose of 130 kg/ha increased the total yield (51.61 t/ha), marketable yield (48.98 t/ha), and water use efficiencies of total yield (53.60 kg/m³) and marketable yield (50.88 kg/m³) only in the first crop cycle”
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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.