Prediction of within-field yield and protein variability in malting barley using canopy reflectance, thermal stress, and soil electrical conductivity

In: Precision Agriculture ‘05
Authors:
CG. Pettersson 1Department of Ecology and Crop production science, Box 7043, SLU, SE-750 07 Uppsala, Sweden
3Svenska Lantmännen Ek. För. Grain Division, SE-745 84 Enköping, Sweden
cg.pettersson@evp.slu.se

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M. Söderström 2Department of Soil Science, Div. of Precision Agriculture, Box 234, SLU, SE-532 23 Skara, Sweden
3Svenska Lantmännen Ek. För. Grain Division, SE-745 84 Enköping, Sweden

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B. Frankow-Lindberg 1Department of Ecology and Crop production science, Box 7043, SLU, SE-750 07 Uppsala, Sweden

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Type:
Chapter
Pages:
377–384
DOI:
https://doi.org/10.3920/978-90-8686-549-9_047

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Three consecutive crops of malting barley grown on clay-loam on one Swedish farm (59°74’ N, 17°00’ E) were monitored. GPS positioned unfertilised plots were established and used for soil sampling. Measurements were made of canopy reflectance and the crop was sampled for above ground dry matter and nitrogen. At harvest, plots of 0.25 m2 were cut in both fertilised and unfertilised barley. Plots of 24 m2 were also harvested from fertilised barley. Using the vegetation index TCARI/OSAVI, a thermal stress index and electrical conductivity of the soil, it was possible to make a good PLS prediction model for kernel yield and protein.

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Cover Precision Agriculture ‘05
E-Book ISBN:
9789086865499
Publisher:
Wageningen Academic
Print Publication Date:
24 Oct 2005
Preliminary Material
Editorial
Field effect transistors in precision agriculture
A review of spectroscopic methods and their suitability as analytical techniques for farm testing
Guidance and automated steering drive resurgence in precision farming
Precision agriculture: the solution to control nutrient emissions?
Precision agriculture: a Western Australian perspective
Discrimination between nitrogen deficiency and fungal infection of winter wheat by laser induced fluorescence
Site-specific identification of fungal infection and nitrogen deficiency in wheat crop using remote sensing
Use of remote sensing within the optical and thermal spectral ranges in order to detect Septoria tritici on winter wheat
Digital infrared thermography for the assessment of leaf pathogens
Managing soilborne diseases in Australian field crops using precision agriculture and soil DNA tests
Detection and mapping of Ridolfia segetum Moris patches in sunflower (Helianthus annuus L.) crop using remote sensing techniques
Weed density prediction with secondary input of DEM information
Feasibility of a real-time weed detection system using spectral reflectance
Site-specific weed control using digital image analysis and georeferenced application maps: On-farm experiences
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Weed identification with chlorophyll fluorescence image analysis
The sampling problem in weed control - are currently applied sampling strategies adequate for site-specific weed control?
Describing weed patches by shape parameters
Development of an image analysis system for estimation of weed pressure
Vision based detection of volunteer potatoes as weeds in sugar beet and cereal fields
Effect of travel speed on characterizing citrus canopy structure with a laser scanner
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Vehicle mounted sensors for estimating tiller density and leaf area index (LAI) of winter wheat
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In-field assessment of wheat-leaf polyphenolics using the new optical leaf-clip Dualex
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Laser-induced chlorophyll fluorescence sensing to determine biomass and nitrogen uptake of winter wheat under controlled environment and field conditions
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On-the-go detection of plant parameters by camera vision in rape
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Evaluation of mapping and on-line nitrogen fertilizer application strategies in multi-year and multi-location static field trials for increasing nitrogen use efficiency of cereals
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Providing operational nitrogen recommendations to farmers using satellite imagery
Change in spatial variability structure of NDVI readings related to observation scale
Cotton lint quality spatial variability and correlation with soil properties and yield
Monitoring wheat protein content on-harvester - Australian experiences
Evaluation of an on-combine wheat protein analyzer on Montana hard red spring wheat
Uniform potato quality with site-specific potassium application
Evaluation of forage yield map techniques on a mowing-conditioning machine

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