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Keyphrases
N Status
71%
Rice
67%
Active Canopy Sensor
62%
Nitrogen Status
58%
Nitrogen nutrition Index
57%
Northeast China
55%
Winter Wheat
53%
Vegetation Index
53%
North China Plain
48%
N Management
47%
Maize
40%
Nitrogen N
40%
N Rate
37%
China
37%
Plant Nitrogen Concentration
35%
Management Strategy
33%
Red Edge
30%
Crop Circle
30%
Nitrogen Diagnosis
29%
Sensor-based
29%
Aboveground Biomass
28%
Normalized Difference Vegetation Index
28%
Plant N Uptake
26%
Precision N Management
25%
N Use Efficiency
25%
Farmers' Fields
24%
Machine Learning
24%
GreenSeeker
21%
Precision Nitrogen Management
21%
Grain Yield
20%
Remote Sensing
18%
UAV
17%
Economic Optimum N Rate
17%
Paddy Rice
17%
Ratio Vegetation Index
16%
Precision Agriculture
16%
Hyperspectral
16%
Growing Season
16%
Corn Yield
16%
Plant Height
16%
Nitrogen Fertilizer
14%
Active Crop Canopy Sensor
14%
Rice Yield
14%
Leaf Chlorophyll Fluorescence
14%
Fluorescent Sensor
13%
Crop N Status
13%
Nitrogen Management Strategies
13%
Spring Maize
13%
Management Zone Delineation
13%
GreenSeeker Sensor
13%
Agricultural and Biological Sciences
Vegetation Index
100%
Remote Sensing
59%
Grains
59%
Nutrition Assessment
55%
Machine Learning
45%
Learning System
45%
Red Edge
40%
Aboveground Biomass
38%
Normalized Difference Vegetation Index
34%
Unmanned Aerial Vehicle
28%
Growing Season
28%
Chlorophyll
28%
Nitrogen Nutrition Index
28%
Crop Management
22%
Heading
22%
Cultivar
21%
Stem Elongation
21%
Paddies
20%
Precision Agriculture
19%
Leaf Area Index
14%
Planting Density
13%
Spring Maize
13%
Triticum aestivum
11%
Spadix
10%
Neural Network
10%
Sustainable Development
10%
Information Systems
10%
Application Rate
9%
Soil Property
9%
Landsat
9%
Growth Models
9%
Soil Testing
8%
Rhizosphere
7%
Synthetic Aperture Radar
7%
Nutrient Management
7%
Farming Systems
7%
Small-Scale Farming
7%
Chlorophyll Content
7%
Soil Nutrient
7%
Spectrometer
7%
Information Management
7%
Nitrogen Fertilizer
7%
Sentinel-2 Satellite
7%
Tillering
6%
Influencing Factor
6%
Hyperspectral Image
6%
Crop Models
6%
Support Vector Machine
5%
Asian Rice
5%
Greenhouse Gas
5%