Abstract
BACKGROUND: Cotton (Gossypium hirsutum L.) is the fiber crop most widely cultivated globally and one of the most important commercial crops in China, irrigation is closely related to the growth of cotton. A water temperature for irrigation that is too low or too high inhibits cotton growth. Poor irrigation timing results in water and nutrient deficiencies that reduce cotton yield. Therefore, it is necessary to determine the appropriate irrigation timing and water temperature. METHOD: We conducted an experiment in an arid region of north-western China to assess the effects of irrigation timing and water temperature on soil temperature and the photosynthetic characteristics, biomass, total nitrogen (N), and seed cotton yield. Two irrigation times (daytime and nighttime) and four water temperatures (15, 20, 25, and 30 °C) were combined into eight treatments. RESULTS: ), and cotton yield. The optimal water temperature range for photosynthesis was 25.7-28.7 °C. Water warming also boosted the biomass allocation to the stem and increased the N allocation to the stem and leaf. Nighttime irrigation enhanced these phenomena. Water warming also increased the number of bolls per plant but reduced the single boll weight, increasing the seed cotton yield by 5.88-11.46%. At the same water temperature, irrigation during the night increased the number of bolls per plant and the single boll weight, improving the seed cotton yield by 2.95-4.31%. Among them, NI25 (nighttime irrigation with 25 °C water temperature) increased the yield by 14.13-14.90% compared with CK (daytime irrigation with 15 °C water temperature), which offers the best combination for increasing the yield. CONCLUSION: Our study clarifies the optimal irrigation timing and water temperature for cotton production under drip irrigation with film mulching, providing valuable information for improving the cotton yield in arid areas with temperate continental climate. © 2023 Society of Chemical Industry.
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Claims 12
Claim · model-written summary
Optimal irrigation water temperature for photosynthesis was 25.7-28.7 °C.
- Taxon
- cotton
Gossypium hirsutumt0 - Outcome
- photosynthesise0
- Value
- 25.7-28.7 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal water temperature range for photosynthesis was 25.7-28.7 °C.”
t0“cotton”
Claim · model-written summary
Water warming increased biomass allocation to the stem.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Water warminge0
- Outcome
- biomass allocation to the steme0
- Direction
- boostede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water warming also boosted the biomass allocation to the stem”
t0“cotton”
Claim · model-written summary
Water warming increased nitrogen allocation to stems and leaves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Water warminge0
- Outcome
- N allocation to the stem and leafe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water warming also boosted the biomass allocation to the stem and increased the N allocation to the stem and leaf.”
t0“cotton”
Claim · model-written summary
Nighttime irrigation enhanced allocation responses.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Nighttime irrigatione0
- Outcome
- these phenomenae0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nighttime irrigation enhanced these phenomena.”
t0“cotton”
Claim · model-written summary
Water warming increased bolls per plant.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Water warminge0
- Outcome
- number of bolls per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water warming also increased the number of bolls per plant”
t0“cotton”
Claim · model-written summary
Water warming reduced single boll weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Water warminge0
- Outcome
- single boll weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water warming also increased the number of bolls per plant but reduced the single boll weight”
t0“cotton”
Claim · model-written summary
Water warming increased seed cotton yield by 5.88-11.46%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Water warminge0
- Outcome
- seed cotton yielde0
- Direction
- increasinge0
- Value
- 5.88-11.46%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water warming also increased the number of bolls per plant but reduced the single boll weight, increasing the seed cotton yield by 5.88-11.46%.”
Claim · model-written summary
Night irrigation increased bolls per plant at the same water temperature.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- irrigation during the nighte0
- Outcome
- number of bolls per plante0
- Direction
- increasede0
- Comparator
- the same water temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the same water temperature, irrigation during the night increased the number of bolls per plant and the single boll weight”
t0“cotton”
Claim · model-written summary
Night irrigation increased single boll weight at the same water temperature.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- irrigation during the nighte0
- Outcome
- single boll weighte0
- Direction
- increasede0
- Comparator
- the same water temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the same water temperature, irrigation during the night increased the number of bolls per plant and the single boll weight”
t0“cotton”
Claim · model-written summary
Night irrigation increased seed cotton yield by 2.95-4.31%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- irrigation during the nighte0
- Outcome
- seed cotton yielde0
- Direction
- improvinge0
- Value
- 2.95-4.31%e0
- Comparator
- the same water temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the same water temperature, irrigation during the night increased the number of bolls per plant and the single boll weight, improving the seed cotton yield by 2.95-4.31%.”
Claim · model-written summary
NI25 increased yield by 14.13-14.90% against CK.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NI25 (nighttime irrigation with 25 °C water temperature)e0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 14.13-14.90%e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NI25 (nighttime irrigation with 25 °C water temperature) increased the yield by 14.13-14.90% compared with CK (daytime irrigation with 15 °C water temperature)”
t0“cotton”
Claim · model-written summary
The authors identify NI25 as the best yield-increasing combination.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NI25e0
- Outcome
- best combination for increasing the yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NI25 (nighttime irrigation with 25 °C water temperature) increased the yield by 14.13-14.90% compared with CK (daytime irrigation with 15 °C water temperature), which offers the best combination for increasing the yield.”
t0“cotton”
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See all 399 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.