Abstract
ABSTRACT Drip fertigation is a key factor in modern irrigated agriculture, where water and fertilizers are the most expensive inputs for this irrigation method. Drip fertigation experiments were carried out at Hama, north of Syria (Tezeen's Irrigation Research Station), for four consecutive years 1995–1998. Cotton (Gossypium hirsutim L.) variety Aleppo 33/1 was planted after unfertilized maize in order to deplete as much as possible the available N and reduce the field variability on the corresponding experimental units and irrigated thereafter. Treatments consisted of two irrigation methods (surface irrigation, and drip fertigation) and five N rates within drip fertigated cotton, including the control (N0 = 0, N1 = 60, N2 = 120, N3 = 180, N4 = 240 kg N ha- 1). The N fertilizer treatment for surface irrigated cotton was 180 kg N ha−1 in accordance with the recommended rate of Ministry of Agriculture and Agrarian Reform. The experimental design was randomized block design with six replicates. Fertigation resulted in large water saving, and highly improved field water-use efficiency. Further, increasing N application rates under drip fertigation increased dry matter yield. The principal benefit of drip fertigation was the achievement of higher field water-use efficiencies, which were increased more than three-fold for both dry matter and seed cotton yield, relative to surface irrigation. The highest water-use efficiencies were obtained with the addition of 180 and 240 kg N ha−1 in 1995 and 1996 and 120 kg N ha−1 in 1997 and 1998. Dry matter production and partitioning among different plant parts at physiological maturity stage varied due to N input and irrigation methods. The overall dry matter distribution among different plant structures for drip fertigated-treatments was: stems, 20.3–21.3%; leaves, 26.3–28.7%; and fruiting forms, 50–53.2%. For the surface-irrigated treatment, the partitioning was stems, 23.1%; leaves, 28.3%; and fruiting form, 48.6%. The reproductive–vegetative plant parts ratio decreased with increasing N input under drip fertigation. Water saving under drip fertigation exceeded 35% of irrigation water relative to surface irrigation of the cotton crop grown under the same conditions.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 14
Claim · model-written summary
Drip fertigation saved more than 35% irrigation water relative to surface irrigation.
- Taxon
- cotton crop
Gossypium hirsutume0 - Treatment
- drip fertigatione0
- Outcome
- Water savinge0
- Direction
- exceedede0
- Value
- 35%e0
- Comparator
- surface irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“Water saving under drip fertigation exceeded 35% of irrigation water relative to surface irrigation of the cotton crop grown under the same conditions.”
Claim · model-written summary
Drip fertigation improved field water use efficiency for dry matter yield more than threefold against surface irrigation.
- Taxon
- cotton cropGossypium hirsutumt0
- Treatment
- drip fertigatione1
- Outcome
- field water-use efficienciese0
- Direction
- increasede0
- Value
- more than three-folde0
- Qualifier
- dry mattere0
- Comparator
- surface irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“higher field water-use efficiencies, which were increased more than three-fold for both dry matter and seed cotton yield, relative to surface irrigation.”
e1“Water saving under drip fertigation exceeded 35% of irrigation water relative to surface irrigation of the cotton crop grown under the same conditions.”
Claim · model-written summary
Drip fertigation improved field water use efficiency for seed cotton yield more than threefold against surface irrigation.
- Taxon
- cotton cropGossypium hirsutumt0
- Treatment
- drip fertigatione1
- Outcome
- field water-use efficienciese0
- Direction
- increasede0
- Value
- more than three-folde0
- Qualifier
- seed cotton yielde0
- Comparator
- surface irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“higher field water-use efficiencies, which were increased more than three-fold for both dry matter and seed cotton yield, relative to surface irrigation.”
e1“Water saving under drip fertigation exceeded 35% of irrigation water relative to surface irrigation of the cotton crop grown under the same conditions.”
Claim · model-written summary
Increasing nitrogen under drip fertigation increased dry matter yield.
- Taxon
- cotton cropGossypium hirsutumt0
- Treatment
- increasing N application rates under drip fertigatione0
- Outcome
- dry matter yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“increasing N application rates under drip fertigation increased dry matter yield.”
Claim · model-written summary
The highest water use efficiencies occurred at 180 and 240 kg N ha−1 in 1995 and 1996.
- Taxon
- cotton cropGossypium hirsutumt0
- Treatment
- 180 and 240 kg N ha−1e0
- Outcome
- water-use efficienciese0
- Direction
- higheste0
- Qualifier
- 1995 and 1996e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“The highest water-use efficiencies were obtained with the addition of 180 and 240 kg N ha−1 in 1995 and 1996”
Claim · model-written summary
The highest water use efficiencies occurred at 120 kg N ha−1 in 1997 and 1998.
- Taxon
- cotton cropGossypium hirsutumt0
- Treatment
- 120 kg N ha−1e0
- Outcome
- water-use efficienciese1
- Direction
- higheste1
- Qualifier
- 1997 and 1998e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“120 kg N ha−1 in 1997 and 1998.”
e1“The highest water-use efficiencies were obtained with the addition of 180 and 240 kg N ha−1 in 1995 and 1996 and 120 kg N ha−1 in 1997 and 1998.”
Claim · model-written summary
Dry matter production and allocation at maturity varied by nitrogen input and irrigation method.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- physiological maturity stagee0
- Treatment
- N input and irrigation methodse0
- Outcome
- Dry matter production and partitioninge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“Dry matter production and partitioning among different plant parts at physiological maturity stage varied due to N input and irrigation methods.”
Claim · model-written summary
Drip fertigated cotton allocated 20.3–21.3% of dry matter to stems.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- stemse0
- Treatment
- drip fertigated-treatmentse0
- Outcome
- dry matter distributione0
- Value
- 20.3–21.3%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“The overall dry matter distribution among different plant structures for drip fertigated-treatments was: stems, 20.3–21.3%; leaves, 26.3–28.7%; and fruiting forms, 50–53.2%.”
Claim · model-written summary
Drip fertigated cotton allocated 26.3–28.7% of dry matter to leaves.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- leavese0
- Treatment
- drip fertigated-treatmentse0
- Outcome
- dry matter distributione0
- Value
- 26.3–28.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“The overall dry matter distribution among different plant structures for drip fertigated-treatments was: stems, 20.3–21.3%; leaves, 26.3–28.7%; and fruiting forms, 50–53.2%.”
Claim · model-written summary
Drip fertigated cotton allocated 50–53.2% of dry matter to fruiting forms.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- fruiting formse0
- Treatment
- drip fertigated-treatmentse0
- Outcome
- dry matter distributione0
- Value
- 50–53.2%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“The overall dry matter distribution among different plant structures for drip fertigated-treatments was: stems, 20.3–21.3%; leaves, 26.3–28.7%; and fruiting forms, 50–53.2%.”
Claim · model-written summary
Surface irrigated cotton allocated 23.1% of dry matter to stems.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- stemse0
- Treatment
- surface-irrigated treatmente0
- Outcome
- partitioninge0
- Value
- 23.1%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“For the surface-irrigated treatment, the partitioning was stems, 23.1%; leaves, 28.3%; and fruiting form, 48.6%.”
Claim · model-written summary
Surface irrigated cotton allocated 28.3% of dry matter to leaves.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- leavese0
- Treatment
- surface-irrigated treatmente0
- Outcome
- partitioninge0
- Value
- 28.3%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“For the surface-irrigated treatment, the partitioning was stems, 23.1%; leaves, 28.3%; and fruiting form, 48.6%.”
Claim · model-written summary
Surface irrigated cotton allocated 48.6% of dry matter to fruiting forms.
- Taxon
- cotton cropGossypium hirsutumt0
- Organ / stage
- fruiting forme0
- Treatment
- surface-irrigated treatmente0
- Outcome
- partitioninge0
- Value
- 48.6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“For the surface-irrigated treatment, the partitioning was stems, 23.1%; leaves, 28.3%; and fruiting form, 48.6%.”
Claim · model-written summary
The reproductive to vegetative plant part ratio fell with increasing nitrogen under drip fertigation.
- Taxon
- cotton cropGossypium hirsutumt0
- Treatment
- increasing N input under drip fertigatione0
- Outcome
- reproductive–vegetative plant parts ratioe0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton crop”
e0“The reproductive–vegetative plant parts ratio decreased with increasing N input under drip fertigation.”
The same questions in other papers
fertilization · physiology: water · Gossypium hirsutum (cotton)Positive and negative results
13 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- no effect
13 papers more in this group
See all 17 papers →irrigation · physiology: water · Gossypium hirsutum (cotton)Positive and negative results
109 papers in the same direction as this paper · 20 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
127 papers more in this group
See all 131 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.