A review and integrating analysis of Spatially-Variable Control of crop production

Fertilizer Research

Volumn 33, Issue 1, 1992, Pages 1-34

  Schueller, John K ^a  

^a UNIVERSITY OF FLORIDA   (United States)

Author keywords

Automatic control; fertilizer application; geographic information systems; sensors; sitespecific; spatially variable; variability

Indexed keywords

EID: 0002261150     PISSN: 01671731     EISSN: 15730867     Source Type: Journal    
DOI: 10.1007/BF01058007     Document Type: Article

References (234)

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2. Detection of soil phosphorus spatial variability through the use of semivariograms and strip sampling
3. An investigation of factors affecting sprayer control system performance
4. Estimation of soil properties and wheat yields on complex eroded hills using geostatistics and thematic mapper images
5. Allopathic effects of annual weed residues on growth and nutrient uptake of corn and soybeans
6. Nitrogen concentration of young corn plants as an indicator of nitrogen availability
7. A modified quadratic/plateau model for describing plant responses to fertilizer
8. Economical nitrogen-sulfur fluids
9. Spatial variability of crop yield as a stochastic process
10. Linear programming analysis of pesticide pollution of groundwater
11. Automatic cylinder speed control for combines
12. Relevant interpretations for the 1990s
13. Computerized weighing system for analysis of nozzle spray distribution
14. Farming soils, not fields: a strategy for increased fertilizer profitability
15. A model to predict crop response to applied fertilizer nutrients in heterogeneous fields
16. Navigational tractor guidance system
17. Automated weighing and moisure sampling for a field-plot combine
18. The use of computer-assisted mapping techniques to delineate potential areas of salinity development in soils
19. Field testing of models which identify soils susceptible to salinity development
20. Using the supercomputer to visualize higher dimensions: an artist's contribution to scientific visualization
21. Systems turns SAR images into maps
22. Rotational transform for smoothing field data
23. Injection pump flow considerations for center pivots with corner watering systems
24. Supplemental fertilization of irrigated corn guided by foliar critical nutrient levels and diagnosis and recommendation integrated system norms
25. Optimizing chemical/mechanical inputs
26. Measuring field variability of disturbed soils for simulation purposes
27. The use of local spectral properties of leaves as an aid for identifying weed seedlings in digital images
28. Review of soil moisture sensing using soil electrical conductivity
29. A pesticide injection metering system for use on agricultural spraying machines
30. Mapping small elevation changes over large areas: differential radar interferometry
31. On track with GPS
32. Spray target sensing and agricultural sprayer control: biological and physical basis
33. A geographic information system to predict non point source pollution potential
34. How much and where: economic and environmental concerns increase interest in site-specific crop management; technical advances make it feasible
35. Is off-wire AGV guidance alive or dead?
36. Electronic sensing of soil organic matter
37. Surface structure effects on close-range reflectance as a function of soil organic matter content
38. Machine vision and image processing for plant identification
39. Development and testing of a versatile fluid fertilizer applicator
40. Forage wheat yields as affected by compaction and conventional versus wideframe tractor traffic patterns
41. Controlling chemical application rate with bypass spray nozzles
42. A constant volume feed device for metering and crushing dry pesticides
43. Sources of increased instability in Indian and U.S. grain production
44. A geographic information system for targeting nonpoint-source agricultural pollution
45. Stochastic analysis of soil water regime in a watershed
46. Simulating growth and yield responses of sorghum to changes in plant density
47. A review of agricultural spray metering
48. Monitoring and control of field machines
49. Residual soil nitrate measurement as a basis for managing nitrogen fertilizer practices for sugarbeets
50. Estimating spatial variations of soil water content using noncontacting electromagnetic inductive methods
51. Sight unseen
52. A radio-controlled trencher for accurate installation of shallow ditches and pipelines
53. A scout in the sky
54. Reflective technique for predicting soil organic matter
55. Spray pattern displacement measurements of TK-SS 2.5 flood tip nozzles
56. To survive in agriculture we need lower costs — not high prices
57. Application of pesticides on-the-go with granular fertilizer
58. Hausdorf dimensional analysis and digital imaging based quality inspection
59. Fine-tuned fertility: tomorrow's technology here today
60. New tool prescribes precise nitrogen needs
61. Spatial variability of wheat yield and soil properties on complex hills
62. Development of reflectance-based crop coefficient for corn
63. Soil water and crop yield spatial variability induced by irrigation noninformity
64. Evaluation of load cycles generated on a fixed tine working in soil
65. Variable rate fluid technology arrives for dealers
66. Precision GPS navigation for improved agricultural productivity
67. Transient behavior of bypass flow nozzles
68. Sensors utilizing light reflection to measure soil organic matter
69. Use of density-independent function and microwave measurement system for grain moisture measurement
70. Response surface analysis of the effects of seeding rates, N-rates and irrigation frequencies on durum wheat. I. grain yield and yield components
71. Sensing hard pan depth with ground-penetrating radar
72. Field evaluation of calibration accuracy of pesticide application equipment
73. Soil specific management
74. A low cost sound pressure grain moisture transducer
75. Prescription tillage: the concept and examples
76. Control concepts for tillage systems
77. Computerized fertilizer application by soil type
78. Design for dynamic response of sprayer-applicators
79. Spatially-attributed automated combine data acquisition
80. Mapping of spatially-variable yield during grain combining
81. Measurement of field location using microwave frequency triangulation
82. Spectroscopic sensing of soil organic matter
83. A measure of “green-ness”
84. Remote, non-contact, and in-situ measurement of soil moisture content: a review
85. Apparatus for precise simultaneous band injection of two fluid fertilizers
86. Growth analysis of whole plants using video imagery
87. Evaluation of reflectance methods for soil organic matter sensing
88. High-tech enhances horsepower
89. Leader cable guidance of an experimental field gantry
90. Nuclear magnetic resonance for moisture analysis of meals and soils
91. Boom flow characteristics with direct chemical injection
92. Chlorophyll meter to predict nitrogen topdress requirement for semidwarf rice
93. Application of regionalized variable theory to large-plot field experiments
94. Yield determination using a pivoted auger flow sensor
95. Sample volume statistical relations for water content, infiltration, and yield
96. Peristaltic pump accuracy in metering herbicides
97. Response corn hybrids to varying plant population densities
98. Development and evaluation of a microwave soil moisture sensor for incorporation in a narrow cultivator time
99. Effect of slope position on microclimate, growth and yield of barley
100. Spatial variability and pedology
101. Spatial trends and variability of soil properties and crop yield in a small watershed
102. Nutrient flux to mixed-bed ion-exchange resin: Temperature effects
103. Topographic mapping from interferometric synthetic aperture radar observations
104. Soil Doctor has nitrogen fix