Abstract
The displacement velocity of the tractor-seeder set, associated with the furrowing mechanism, influences the plant distribution and the establishment of a correct plant stand in the field. The objective of this study was to evaluate the operational performance of a seeder-fertilizer in the non-tillage sunflower crop, according to sowing speeds and furrow mechanisms. The experimental design used was the randomized blocks, with treatments arranged in a split-plot scheme, where the plots were the furrowing mechanisms (chisel openers and double disk) and the subplots were the sowing speeds (3.2; 4.6; 6.2 and 7.0km h-1), with three replicates. The following were determined in this study: the emergence speed index, the emergence in the field, the average distance between the plants, plant height, plant population and the longitudinal distribution of plants. Sunflower sowing using a chisel openers provides greater emergence in the field, emergence speed index and, consequently, greater plant population. Sowing speed ranging from 3.2 to 7.0km h-1 do not influence field emergence, emergence speed index, height and population of sunflower plants.
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Claims 4
Claim · model-written summary
Chisel openers increased field emergence, emergence speed index, and plant population.
- Taxon
- Sunflower
Helianthus annuuse0 - Treatment
- chisel openerse0
- Outcome
- emergence in the field, emergence speed indexe0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sunflower sowing using a chisel openers provides greater emergence in the field, emergence speed index and, consequently, greater plant population.”
Claim · model-written summary
Chisel openers increased sunflower plant population.
- Taxon
- SunflowerHelianthus annuuse0
- Treatment
- chisel openerse0
- Outcome
- plant populatione0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sunflower sowing using a chisel openers provides greater emergence in the field, emergence speed index and, consequently, greater plant population.”
Claim · model-written summary
Sowing speed from 3.2 to 7.0 km h-1 did not influence emergence, emergence speed, height, or population.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Sowing speed ranging from 3.2 to 7.0km h-1e0
- Outcome
- field emergence, emergence speed index, heighte0
- Direction
- do not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sowing speed ranging from 3.2 to 7.0km h-1 do not influence field emergence, emergence speed index, height and population of sunflower plants.”
Claim · model-written summary
Sowing speed from 3.2 to 7.0 km h-1 did not influence sunflower population.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- Sowing speed ranging from 3.2 to 7.0km h-1e0
- Outcome
- populatione0
- Direction
- do not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sowing speed ranging from 3.2 to 7.0km h-1 do not influence field emergence, emergence speed index, height and population of sunflower plants.”