Abstract
Abstract This study aimed to evaluate the effects of combined application of fenoxaprop (fenoxaprop‐p‐ethyl) and urea on potato ( Solanum tuberosum L.) photosynthesis, weed control, and yield. The optimal sequence and dosage of the urea and fenoxaprop combination on potato production was investigated using different concentrations of urea (0, 1, 2, 4, and 8 g L −1 ) and fenoxaprop (0, 1.33, 2.66, 5.32, and 7.98 ml L −1 ) in a randomized block experiment. Potato plant photosynthesis levels, weed control efficacy, and potato yield were explored through the analysis of chlorophyll content index (CCI), photosynthetic parameters, weed‐related statistics, and polynomial regression. The results showed fenoxaprop stress not only reduced indices such as the CCI and net photosynthetic rate (Pn) but also decreased the activity, maximum photochemical efficiency, and quantum efficiency of Photosystem II, and the photochemical quenching coefficient. Urea at concentrations of 1–4 g L −1 antagonized the toxicity of fenoxaprop, whereas 8‐g L −1 urea aggravated herbicide toxicity. Compared with fenoxaprop treatment alone, the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprop significantly increased the Pn of potato plants, weed control efficacy, and potato tuber yield by 36.12, 11.35, and 11%, respectively. Furthermore, treatment with urea first, followed by fenoxaprop, displayed greater efficacy in weed control than fenoxaprop followed by urea. Taken together, urea at concentrations of 1–4 g L −1 may alleviate the side effects of fenoxaprop on potato seedlings. Meanwhile, urea treatment (4 g L −1 ) followed by fenoxaprop (1.33 ml L −1 ) may be the optimal combination for potato production.
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Claims 10
Claim · model-written summary
Fenoxaprop stress reduced the CCI and net photosynthetic rate (Pn) of potato.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- fenoxaprope1
- Outcome
- CCI and net photosynthetic rate (Pn)e1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e1“fenoxaprop stress not only reduced indices such as the CCI and net photosynthetic rate (Pn) but also decreased the activity, maximum photochemical efficiency, and quantum efficiency of Photosystem II, and the photochemical quenching coefficient”
Claim · model-written summary
Fenoxaprop stress decreased the activity, maximum photochemical efficiency and quantum efficiency of Photosystem II in potato.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fenoxaprope1
- Outcome
- activity, maximum photochemical efficiency, and quantum efficiency of Photosystem IIe1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e1“fenoxaprop stress not only reduced indices such as the CCI and net photosynthetic rate (Pn) but also decreased the activity, maximum photochemical efficiency, and quantum efficiency of Photosystem II, and the photochemical quenching coefficient”
Claim · model-written summary
Fenoxaprop stress decreased the photochemical quenching coefficient of potato.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fenoxaprope1
- Outcome
- photochemical quenching coefficiente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e1“fenoxaprop stress not only reduced indices such as the CCI and net photosynthetic rate (Pn) but also decreased the activity, maximum photochemical efficiency, and quantum efficiency of Photosystem II, and the photochemical quenching coefficient”
Claim · model-written summary
Urea at 1–4 g L −1 antagonized the toxicity of fenoxaprop in potato.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Urea at concentrations of 1–4 g L −1e2
- Outcome
- toxicity of fenoxaprope2
- Direction
- antagonizede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e2“Urea at concentrations of 1–4 g L −1 antagonized the toxicity of fenoxaprop”
Claim · model-written summary
8 g L −1 urea aggravated herbicide toxicity in potato.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 8‐g L −1 ureae3
- Outcome
- herbicide toxicitye3
- Direction
- aggravatede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e3“whereas 8‐g L −1 urea aggravated herbicide toxicity”
Claim · model-written summary
Compared with fenoxaprop alone, 4 g L-1 urea with 1.33 ml L-1 fenoxaprop significantly increased Pn of potato plants by 36.12.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprope4
- Outcome
- Pn of potato plantse4
- Direction
- increasede4
- Value
- 36.12e4
- Comparator
- fenoxaprop treatment alonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e4“Compared with fenoxaprop treatment alone, the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprop significantly increased the Pn of potato plants, weed control efficacy, and potato tuber yield by 36.12, 11.35, and 11%, respectively”
Claim · model-written summary
Compared with fenoxaprop alone, 4 g L-1 urea with 1.33 ml L-1 fenoxaprop significantly increased weed control efficacy by 11.35.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprope4
- Outcome
- weed control efficacye4
- Direction
- increasede4
- Value
- 11.35e4
- Comparator
- fenoxaprop treatment alonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e4“Compared with fenoxaprop treatment alone, the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprop significantly increased the Pn of potato plants, weed control efficacy, and potato tuber yield by 36.12, 11.35, and 11%, respectively”
Claim · model-written summary
Compared with fenoxaprop alone, 4 g L-1 urea with 1.33 ml L-1 fenoxaprop significantly increased potato tuber yield by 11%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprope4
- Outcome
- potato tuber yielde4
- Direction
- increasede4
- Value
- 11%e4
- Comparator
- fenoxaprop treatment alonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e4“Compared with fenoxaprop treatment alone, the combination of 4‐g L −1 urea and 1.33‐ml L −1 fenoxaprop significantly increased the Pn of potato plants, weed control efficacy, and potato tuber yield by 36.12, 11.35, and 11%, respectively”
Claim · model-written summary
Urea applied first, followed by fenoxaprop, gave greater weed control efficacy than fenoxaprop followed by urea.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- treatment with urea first, followed by fenoxaprope5
- Outcome
- efficacy in weed controle5
- Direction
- greatere5
- Comparator
- fenoxaprop followed by ureae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e5“treatment with urea first, followed by fenoxaprop, displayed greater efficacy in weed control than fenoxaprop followed by urea”
Claim · model-written summary
Urea treatment (4 g L −1) followed by fenoxaprop (1.33 ml L −1) may be the optimal combination for potato production.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- urea treatment (4 g L −1) followed by fenoxaprop (1.33 ml L −1)e6
- Outcome
- optimal combination for potato productione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield of potato”
e6“urea treatment (4 g L −1) followed by fenoxaprop (1.33 ml L −1) may be the optimal combination for potato production”
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See all 6 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.