Abstract
The present study aimed to compare the influence of four different tillage systems on soil characteristics, root system, vegetative growth and seed yield of sunflower. A field experiment was carried out on a clay soil during two consecutive seasons (1999 and 2000) at the Farm of the Agricultural and Water Research Center, Al-Hasa, Saudi Arabia. The suggested land preparation and tillage systems were disc plowing followed by spike tooth harrowing (DPTH), moldboard plowing followed by spike tooth harrowing (MPTH), disc plowing followed by disc harrowing (DPDH), chisel plowing followed by disc harrowing (CPDH) and no tillage (CONT). The result indicated that there were significant differences between the evaluated systems in soil density at 10 and 20 cm soil depth. DPDH system was superior in producing the lowest values of soil density at both depths and the less soil penetration resistance through the layer of the plowing. All tillage systems increased the initial and basic infiltration rates, compared to the non tillage. Chisel plowing gave the highest initial and basic infiltration rate, while DPDH system gave slightly lower values, compared to chisel plowing but higher than the others. The tillage systems were found to have a significant effect on the root characteristics and plant vegetative growth. Better root length, root distribution area, fresh and dry weight of the root were achieved by DPDH system. There was no significant difference between MPTH and DPTH systems on the root system, except root fresh weight. However, there was a significant difference between DPTH treatment and the others on the root characteristics, except root length. Also, DPDH system resulted in the highest values of the vegetative growth, providing an increase of 28%, 55%, 51% and 70% in plant height, number of leaves per plant, plant fresh weight and average leaf area per plant, respectively compared with the CONT. No significant differences were existed neither between MPTH and DPTH nor between DPTH and CPDH on the four vegetative parameters. Seed yield and its components of sunflower exposed a significant effect between the various tillage systems. The greatest effect was observed by DPDH system which produced the best seed disc components, giving an increase of 31% in the seed disc diameter and an 36% in the seed yield. It is possibly to suggest that using the system of disc plowing followed by disc harrowing could be the useful land preparation for enhancing the yield of sunflower under the condition of the area of study.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 19
Claim · model-written summary
Tillage systems differed significantly in soil density at 10 and 20 cm.
- Taxon
- SUNFLOWER
Helianthus annuust0 - Outcome
- soil densitye0
Not reportedOrgan / stageDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences between the evaluated systems in soil density at 10 and 20 cm soil depth”
t0“SUNFLOWER”
Claim · model-written summary
DPDH had the lowest soil density and less penetration resistance.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- soil density at both depths and the less soil penetration resistancee0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system was superior in producing the lowest values of soil density at both depths and the less soil penetration resistance through the layer of the plowing”
t0“SUNFLOWER”
Claim · model-written summary
All tillage systems increased initial and basic infiltration compared with no tillage.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- All tillage systemse0
- Outcome
- initial and basic infiltration ratese0
- Direction
- increasede0
- Comparator
- non tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All tillage systems increased the initial and basic infiltration rates, compared to the non tillage”
t0“SUNFLOWER”
Claim · model-written summary
Chisel plowing had the highest initial and basic infiltration rates.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- Chisel plowinge0
- Outcome
- initial and basic infiltration ratee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chisel plowing gave the highest initial and basic infiltration rate”
t0“SUNFLOWER”
Claim · model-written summary
DPDH infiltration was below chisel plowing but above the other systems.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- initial and basic infiltration ratese1
- Direction
- lowere0
- Qualifier
- higher than the otherse0
- Comparator
- chisel plowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system gave slightly lower values, compared to chisel plowing but higher than the others”
e1“All tillage systems increased the initial and basic infiltration rates, compared to the non tillage”
t0“SUNFLOWER”
Claim · model-written summary
Tillage significantly affected sunflower root characteristics and vegetative growth.
- Taxon
- SUNFLOWERHelianthus annuust0
- Outcome
- root characteristics and plant vegetative growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tillage systems were found to have a significant effect on the root characteristics and plant vegetative growth”
t0“SUNFLOWER”
Claim · model-written summary
DPDH improved root length, distribution area, and fresh and dry root weight.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- root length, root distribution area, fresh and dry weight of the roote0
- Direction
- Bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Better root length, root distribution area, fresh and dry weight of the root were achieved by DPDH system”
t0“SUNFLOWER”
Claim · model-written summary
MPTH and DPTH did not significantly differ for roots except fresh weight.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- MPTHe0
- Outcome
- root systeme0
- Direction
- no significant differencee0
- Qualifier
- except root fresh weighte0
- Comparator
- DPTHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant difference between MPTH and DPTH systems on the root system, except root fresh weight”
t0“SUNFLOWER”
Claim · model-written summary
DPTH significantly differed from other treatments in root characteristics except length.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPTH treatmente0
- Outcome
- root characteristicse0
- Qualifier
- except root lengthe0
- Comparator
- the otherse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant difference between DPTH treatment and the others on the root characteristics, except root length”
t0“SUNFLOWER”
Claim · model-written summary
DPDH increased sunflower height by 28% versus no tillage.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- plant heighte0
- Direction
- increasee0
- Value
- 28%e0
- Comparator
- CONTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system resulted in the highest values of the vegetative growth, providing an increase of 28%, 55%, 51% and 70% in plant height, number of leaves per plant, plant fresh weight and average leaf area per plant, respectively compared with the CONT”
t0“SUNFLOWER”
Claim · model-written summary
DPDH increased leaves per plant by 55% versus no tillage.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- number of leaves per plante0
- Direction
- increasee0
- Value
- 55%e0
- Comparator
- CONTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system resulted in the highest values of the vegetative growth, providing an increase of 28%, 55%, 51% and 70% in plant height, number of leaves per plant, plant fresh weight and average leaf area per plant, respectively compared with the CONT”
t0“SUNFLOWER”
Claim · model-written summary
DPDH increased plant fresh weight by 51% versus no tillage.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- plant fresh weighte0
- Direction
- increasee0
- Value
- 51%e0
- Comparator
- CONTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system resulted in the highest values of the vegetative growth, providing an increase of 28%, 55%, 51% and 70% in plant height, number of leaves per plant, plant fresh weight and average leaf area per plant, respectively compared with the CONT”
t0“SUNFLOWER”
Claim · model-written summary
DPDH increased average leaf area by 70% versus no tillage.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- average leaf area per plante0
- Direction
- increasee0
- Value
- 70%e0
- Comparator
- CONTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system resulted in the highest values of the vegetative growth, providing an increase of 28%, 55%, 51% and 70% in plant height, number of leaves per plant, plant fresh weight and average leaf area per plant, respectively compared with the CONT”
t0“SUNFLOWER”
Claim · model-written summary
MPTH and DPTH did not significantly differ on four vegetative measures.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- MPTHe0
- Outcome
- four vegetative parameterse0
- Direction
- No significant differencese0
- Comparator
- DPTHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant differences were existed neither between MPTH and DPTH nor between DPTH and CPDH on the four vegetative parameters”
t0“SUNFLOWER”
Claim · model-written summary
DPTH and CPDH did not significantly differ on four vegetative measures.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPTHe0
- Outcome
- four vegetative parameterse0
- Direction
- No significant differencese0
- Comparator
- CPDHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant differences were existed neither between MPTH and DPTH nor between DPTH and CPDH on the four vegetative parameters”
t0“SUNFLOWER”
Claim · model-written summary
Seed yield and components significantly differed among tillage systems.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- Seed yield and its componentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield and its components of sunflower exposed a significant effect between the various tillage systems”
Claim · model-written summary
DPDH increased seed disc diameter by 31%.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- seed disc diametere0
- Direction
- increasee0
- Value
- 31%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system which produced the best seed disc components, giving an increase of 31% in the seed disc diameter and an 36% in the seed yield”
t0“SUNFLOWER”
Claim · model-written summary
DPDH increased seed yield by 36%.
- Taxon
- SUNFLOWERHelianthus annuust0
- Treatment
- DPDH systeme0
- Outcome
- seed yielde0
- Direction
- increasee0
- Value
- 36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPDH system which produced the best seed disc components, giving an increase of 31% in the seed disc diameter and an 36% in the seed yield”
t0“SUNFLOWER”
Claim · model-written summary
The authors recommended disc plowing followed by disc harrowing for sunflower yield in the study area.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- disc plowing followed by disc harrowinge0
- Setting
- area of studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using the system of disc plowing followed by disc harrowing could be the useful land preparation for enhancing the yield of sunflower under the condition of the area of study”
The same questions in other papers
(1S)-isoindoline-1-carboxylic acid · yield · Helianthus annuus (common sunflower)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
See all 7 papers →(1S)-isoindoline-1-carboxylic acid · disease · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- positive
(1S)-isoindoline-1-carboxylic acid · growth · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- positive
tillage · growth · Helianthus annuus (common sunflower)Positive and negative results
10 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
11 papers more in this group
See all 15 papers →tillage · yield · Helianthus annuus (common sunflower)Positive and negative results
49 papers in the same direction as this paper · 16 in the opposite direction · 4 reporting no difference from an alternative
- no effect
- no effect
- negative
66 papers more in this group
See all 70 papers →tillage · soil: physics · Helianthus annuus (common sunflower)Results agree
9 papers in the same direction as this paper
- positive
- positive
- positive
6 papers more in this group
See all 10 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.