Abstract
A field experiment was conducted at El-Kanater Horticultural Research Station in the two seasons of 2013/14 and 2014/15 to study the effect of two soil moisture levels (25 % and 50 % of available soil moisture i.e. medium and dry) under drip and surface irrigation systems and three sources of N- fertilizers, namely urea ( 46.5% N), ammonium nitrate ( 33.5% N) and ammonium sulphate ( 20.5% N) at the rate of 50 kg N/fed., as well as their interactions on applied irrigation water, water use efficiency, growth, yield quality and chemical composition of lettuce (Lactuca sativa L.)cv. Balady . Results indicate that surface irrigation system showed higher applied irrigation water under 25% and 50% of the available soil moisture than the drip irrigation system during 2013/14 and 2014/15 seasons. Drip irrigation system supported an increase of water use efficiency (23.84 and 22.57 kg/m3) in the first and the second seasons, respectively . Ammonium sulphate application slightly increased the water use efficiency W.U.E (23.65 and 24.16 kg/m3) in the two seasons, respectively. Results of the interaction indicate that the medium moisture (25 %) and Ammonium sulphate application under drip and surface irrigation systems increased all studied growth characters, yield and nutrient uptake of lettuce .
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Claims 7
Claim · model-written summary
Surface irrigation used more water than drip irrigation at both moisture levels in both seasons.
- Treatment
- surface irrigation systeme0
- Outcome
- applied irrigation watere0
- Direction
- highere0
- Qualifier
- 25% and 50% of the available soil moisturee0
- Comparator
- drip irrigation systeme0
Not reportedTaxon
Verbatim
e0“surface irrigation system showed higher applied irrigation water under 25% and 50% of the available soil moisture than the drip irrigation system during 2013/14 and 2014/15 seasons”
Claim · model-written summary
Drip irrigation increased water use efficiency to 23.84 kg/m3 in the first season.
- Treatment
- Drip irrigation systeme0
- Outcome
- water use efficiencye0
- Direction
- increasee0
- Value
- 23.84e0
- Qualifier
- firste0
Not reportedTaxonComparator
Verbatim
e0“Drip irrigation system supported an increase of water use efficiency (23.84 and 22.57 kg/m3) in the first and the second seasons, respectively”
Claim · model-written summary
Drip irrigation increased water use efficiency to 22.57 kg/m3 in the second season.
- Treatment
- Drip irrigation systeme0
- Outcome
- water use efficiencye0
- Direction
- increasee0
- Value
- 22.57 kg/m3e0
- Qualifier
- second seasonse0
Not reportedTaxonComparator
Verbatim
e0“Drip irrigation system supported an increase of water use efficiency (23.84 and 22.57 kg/m3) in the first and the second seasons, respectively”
Claim · model-written summary
Ammonium sulphate slightly increased water use efficiency to 23.65 kg/m3 in the first season.
- Treatment
- Ammonium sulphate applicatione0
- Outcome
- water use efficiencye0
- Direction
- increasede0
- Value
- 23.65e0
Not reportedTaxonComparator
Verbatim
e0“Ammonium sulphate application slightly increased the water use efficiency W.U.E (23.65 and 24.16 kg/m3) in the two seasons, respectively”
Claim · model-written summary
Ammonium sulphate slightly increased water use efficiency to 24.16 kg/m3 in the second season.
- Treatment
- Ammonium sulphate applicatione0
- Outcome
- water use efficiencye0
- Direction
- increasede0
- Value
- 24.16 kg/m3e0
Not reportedTaxonComparator
Verbatim
e0“Ammonium sulphate application slightly increased the water use efficiency W.U.E (23.65 and 24.16 kg/m3) in the two seasons, respectively”
Claim · model-written summary
Medium moisture and ammonium sulphate increased lettuce growth characters and yield under both irrigation systems.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- medium moisture (25 %) and Ammonium sulphate applicatione0
- Outcome
- growth characters, yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the medium moisture (25 %) and Ammonium sulphate application under drip and surface irrigation systems increased all studied growth characters, yield and nutrient uptake of lettuce”
Claim · model-written summary
Medium moisture and ammonium sulphate increased lettuce nutrient uptake under both irrigation systems.
- Taxon
- lettuceLactuca sativae0
- Treatment
- medium moisture (25 %) and Ammonium sulphate applicatione0
- Outcome
- nutrient uptake of lettucee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the medium moisture (25 %) and Ammonium sulphate application under drip and surface irrigation systems increased all studied growth characters, yield and nutrient uptake of lettuce”
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