Abstract
Field experiments were conducted during 1980-2004 at Agricultural Research and Development Institute from Fundulea (Romania) on a leached chernozem soil, well drained, formed on loess, with 33% clay content and 2.8% organic matter in the arable layer. The paper presents aspects regarding the influence of different soil tillage methods (moldboard plow, chisel, paraplow, disking), fertilizers and track by track successive passings of tractor (from 1 to 3) prior to seedbed preparation on sunflower yield under dryland conditions. The developed modern crop production technologies should be improved in response to concerns about environmental impacts of agriculture towards cropping intensification reduction. In this context, choice of a good soil tillage method management is an important decision to improve grain yield and quality. Continuous implementation of optimal rates of fertilizers (from different chemical types or manure) helps us to obtained more efficient sunflower cropping systems. The wheel pressure induces a soil compaction down to 40 cm depth, emphasized by an increase of bulk density and a decrease of total and air porosities below the minimum level needed for normal crop development. The plant height and leaf area were reduced by compaction, as a result of deteriorated soil conditions for root growth. The root biomass was lower by 16-33% in compacted soil as compared with non-compacted one.
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Claims 6
Claim · model-written summary
Wheel pressure compacted soil down to 40 cm, increasing bulk density and reducing total and air porosity.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- wheel pressuree0
- Outcome
- soil compactione0
- Value
- 40 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wheel pressure induces a soil compaction down to 40 cm depth, emphasized by an increase of bulk density and a decrease of total and air porosities below the minimum level needed for normal crop development.”
t0“sunflower yields”
Claim · model-written summary
Compaction reduced sunflower plant height and leaf area.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- compactione0
- Outcome
- plant height and leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant height and leaf area were reduced by compaction, as a result of deteriorated soil conditions for root growth.”
t0“sunflower yields”
Claim · model-written summary
Root biomass was 16–33% lower in compacted than non-compacted soil.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- compacted soile0
- Outcome
- root biomasse0
- Direction
- lowere0
- Value
- 16-33%e0
- Comparator
- non-compacted onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass was lower by 16-33% in compacted soil as compared with non-compacted one.”
t0“sunflower yields”
Claim · model-written summary
The authors recommend improved crop production technologies to reduce environmental impacts.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- crop production technologies should be improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The developed modern crop production technologies should be improved in response to concerns about environmental impacts of agriculture towards cropping intensification reduction.”
t0“sunflower yields”
Claim · model-written summary
The authors recommend choosing suitable soil tillage management to improve grain yield and quality.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- improve grain yield and qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“choice of a good soil tillage method management is an important decision to improve grain yield and quality”
t0“sunflower yields”
Claim · model-written summary
The authors recommend continuous optimal fertilization for more efficient sunflower systems.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- more efficient sunflower cropping systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Continuous implementation of optimal rates of fertilizers (from different chemical types or manure) helps us to obtained more efficient sunflower cropping systems.”
The same questions in other papers
tillage · growth · Helianthus annuus (common sunflower)Positive and negative results
3 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.