Abstract
In this paper, performance of a no-till corn planter in a soil covered with previous wheat residue was evaluated.Three levels of crop residue cover (CRC): 30, 45 and 60%, two planting schemes; onbed and in-furrow and two forward speed: (4 and 8 km h -1 ) were considered as treatments.The field was evaluated by ground and air observations.The purpose of this study was to investigate the capability of aerial images captured by an unmanned aerial vehicle (UAV) in identifying the distances between corn seedlings and as a result, assessing the quality of planter performance.Collected data from ground and aerial imagery were used to calculate seed establishment indices including multiple index, miss index, quality of feed index, precision index and also emergence rate index (ERI), for each plot.Images captured from10 m altitude (4.5 mm pixel -1 ) could give satisfactory results in relation to our objectives.Our results show that acceptable correlations existed between terrestrial and aerial seedlings spacing data sets (0.94<R<0.98) suggesting the aerial imagery is a good choice for evaluating the seed establishment and estimating ERI.Aerial imagery data source underestimated quality of feed and precision indices, overestimated miss index and could not provide processed data range needed for computing multiple index due to low image resolution, weeds presence within crop rows and overlapping of leaves.
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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 5
Claim · model-written summary
Images from 10 m altitude gave satisfactory planter assessment results.
- Taxon
- corn
Zea mays subsp. mayse1 - Outcome
- satisfactory resultse0
- Value
- 4.5 mm pixel -1e0
- Setting
- 10 m altitudee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Images captured from10 m altitude (4.5 mm pixel -1 ) could give satisfactory results in relation to our objectives.”
t0“Drone Imagery for Monitoring Performance of a Modified Drill”
e1“no-till corn planter”
Claim · model-written summary
Aerial and terrestrial seedling spacing measurements correlated with R between 0.94 and 0.98.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- correlationse0
- Value
- 0.94<R<0.98e0
- Comparator
- terrestrial and aerial seedlings spacing data setse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acceptable correlations existed between terrestrial and aerial seedlings spacing data sets (0.94<R<0.98)”
t0“Drone Imagery for Monitoring Performance of a Modified Drill”
e1“no-till corn planter”
Claim · model-written summary
Aerial imagery underestimated quality of feed and precision indices.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- quality of feed and precision indicese0
- Direction
- underestimatede0
- Comparator
- Aerial imagery data sourcee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aerial imagery data source underestimated quality of feed and precision indices”
t0“Drone Imagery for Monitoring Performance of a Modified Drill”
e1“no-till corn planter”
Claim · model-written summary
Aerial imagery overestimated miss index.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- miss indexe0
- Direction
- overestimatede0
- Comparator
- Aerial imagery data sourcee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aerial imagery data source underestimated quality of feed and precision indices, overestimated miss index”
t0“Drone Imagery for Monitoring Performance of a Modified Drill”
e1“no-till corn planter”
Claim · model-written summary
Aerial imagery could not supply the data range needed to compute multiple index.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- processed data range needed for computing multiple indexe0
- Qualifier
- low image resolution, weeds presence within crop rows and overlapping of leavese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“could not provide processed data range needed for computing multiple index due to low image resolution, weeds presence within crop rows and overlapping of leaves.”
t0“Drone Imagery for Monitoring Performance of a Modified Drill”
e1“no-till corn planter”