Abstract
This study was aimed to assess the effect of defoliant application on yield and yield components of some cotton cultivars at timely and late sowing under Harran Plain conditions in 2017 and 2018 growing seasons. Field trials were arranged employing randomized blocks split-split plots design with 3 replications. In the study, sowing times (i.e.10th of May and 10th of June) consisted the main plots, cultivars (i.e. Candia and Lima) placed in the sub-plots and defoliant applications (i.e. Control and Dropp Ultra (600 ml ha-1)) were in the sub-subplots. Each plot was sown with a length of 12 m and 6 rows, with a 70 cm inter-row and 15 cm intra-row spacing. In the trials, the defoliant chemical called Dropp Ultra (i.e.120 g Thidiazuron + 60 g Diuron) was used. The application was practiced when the 60 % of boll opened. It was found that Candia and Lima cotton cultivars sown timely gave seed cotton yields of 5296.7 and 5073.3 kg ha-1 respectively, whereas at late sowing gave the seed cotton yields of 4672.5 kg ha-1 and 4545.8 kg ha-1in 2017 and 2018; Candia gave the higher seed cotton yield (i.e. 5179.2 in 2017 and 5013.3 kg ha-1 in 2018) than Lima cultivar (i.e. 4790.0 in 2017 and 4605.8 kg ha-1 in 2018) in both years. Results indicated that that the defoliant application increased the seed cotton yield comparing control plots. Defoliant application positively influenced the seed cotton yield (kg ha-1), plant height (cm), number of opened bolls (per plant-1), boll weight (g) and boll seed cotton weight (g). However, there were no significant effects on the number of bolls (per plant-1) and 100 seed weight (g). It was concluded that defoliant application and timely sowing can be recommended for farmers in the region.
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Claims 10
Claim · model-written summary
Timely sown Candia yielded 5296.7 kg ha-1 seed cotton.
- Taxon
- cotton
Gossypium hirsutume0 - Material
- Candiae0
- Treatment
- sown timelye0
- Outcome
- seed cotton yieldse0
- Value
- 5296.7e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Candia and Lima cotton cultivars sown timely gave seed cotton yields of 5296.7 and 5073.3 kg ha-1 respectively”
Claim · model-written summary
Timely sown Lima yielded 5073.3 kg ha-1 seed cotton.
- Taxon
- cottonGossypium hirsutume0
- Material
- Limae0
- Treatment
- sown timelye0
- Outcome
- seed cotton yieldse0
- Value
- 5073.3 kg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Candia and Lima cotton cultivars sown timely gave seed cotton yields of 5296.7 and 5073.3 kg ha-1 respectively”
Claim · model-written summary
Late sown Candia yielded 4672.5 kg ha-1 seed cotton.
- Taxon
- cottonGossypium hirsutume1
- Material
- Candiae1
- Treatment
- late sowinge0
- Outcome
- seed cotton yieldse0
- Value
- 4672.5 kg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at late sowing gave the seed cotton yields of 4672.5 kg ha-1 and 4545.8 kg ha-1in 2017 and 2018”
e1“Candia and Lima cotton cultivars”
Claim · model-written summary
Late sown Lima yielded 4545.8 kg ha-1 seed cotton.
- Taxon
- cottonGossypium hirsutume1
- Material
- Limae1
- Treatment
- late sowinge0
- Outcome
- seed cotton yieldse0
- Value
- 4545.8 kg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at late sowing gave the seed cotton yields of 4672.5 kg ha-1 and 4545.8 kg ha-1in 2017 and 2018”
e1“Candia and Lima cotton cultivars”
Claim · model-written summary
Candia outyielded Lima in seed cotton yield in both years.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Candiae0
- Outcome
- seed cotton yielde0
- Direction
- highere0
- Comparator
- Lima cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Candia gave the higher seed cotton yield (i.e. 5179.2 in 2017 and 5013.3 kg ha-1 in 2018) than Lima cultivar (i.e. 4790.0 in 2017 and 4605.8 kg ha-1 in 2018) in both years.”
t0“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
Defoliant increased seed cotton yield against control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- defoliant applicatione0
- Outcome
- seed cotton yielde0
- Direction
- increasede0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the defoliant application increased the seed cotton yield comparing control plots.”
t0“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
Defoliant positively affected plant height, opened boll number and boll weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Defoliant applicatione0
- Outcome
- plant height (cm), number of opened bolls (per plant-1), boll weight (g)e0
- Direction
- positively influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliant application positively influenced the seed cotton yield (kg ha-1), plant height (cm), number of opened bolls (per plant-1), boll weight (g) and boll seed cotton weight (g).”
t0“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
Defoliant positively affected boll seed cotton weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Defoliant applicatione0
- Outcome
- boll seed cotton weighte0
- Direction
- positively influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliant application positively influenced the seed cotton yield (kg ha-1), plant height (cm), number of opened bolls (per plant-1), boll weight (g) and boll seed cotton weight (g).”
t0“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
Defoliant had no significant effect on boll number and 100 seed weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Defoliant applicatione1
- Outcome
- number of bolls (per plant-1) and 100 seed weight (g)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no significant effects on the number of bolls (per plant-1) and 100 seed weight (g).”
e1“Defoliant application”
t0“cotton (Gossypium hirsutum L.)”
Claim · model-written summary
The authors recommended defoliant application and timely sowing for farmers in the region.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- defoliant application and timely sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“defoliant application and timely sowing can be recommended for farmers in the region”
t0“cotton (Gossypium hirsutum L.)”
The same questions in other papers
defoliant · organism · Gossypium hirsutum (cotton)Positive and negative results
3 in the opposite direction
- negative
- no effect
- negative
defoliant · yield · Gossypium hirsutum (cotton)Positive and negative results
7 papers in the same direction as this paper · 5 in the opposite direction
- negative
- positive
- no effect
9 papers more in this group
See all 13 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.