Estimation of citrus fruit yield using ultrasonically-sensed tree size

Applied Engineering in Agriculture

Volumn 22, Issue 1, 2006, Pages 39-44

  Zaman, Qamar Uz ^a   Schumann, Arnold Walter ^a   Hostler, Howard Kevin ^a  

^a UNIVERSITY OF FLORIDA   (United States)

Author keywords

Canopy volume; Citrus; DGPS; GIS; Ultrasonic sensors; Yield monitoring

Indexed keywords

COMPUTER SOFTWARE; ERRORS; ESTIMATION; FORESTRY; FRUITS; GEOGRAPHIC INFORMATION SYSTEMS; MAPPING; SENSORS; ULTRASONIC APPLICATIONS;

CANOPY VOLUME; DIFFERENTIAL GLOBAL POSITIONING SYSTEM (DGPS); ULTRASONIC SENSORS; YIELD MONITORING;

CROPS;

CITRUS FRUITS; COMPUTER PROGRAMS; ERRORS; ESTIMATION; FOREST CANOPY; MAPPING; MONITORING; SENSORS; TREES;

CITRUS;

EID: 33645452191     PISSN: 08838542     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (24)

1. Albrigo, L. G., C. A. Anderson, and G. J. Edwards. 1975. Yield estimation of 'Valencia' orange research plots and groves. Proc. Fla. State Hort. Soc. 88: 44-49.
2. Chan, C. W., J. K. Schueller, W. M. Miller J. D. Whitney, T. A. Wheaton, and J. A. Cornell. 2002. Error sources on yield-based fertilizer variable rate application maps. Precision Agriculture 3(1): 81-94.
3. Durand-Wayland, Inc. 1998. Smart spray operator's manual. LaGrange, Ga.
4. FDACS. 2002. Florida Department of Agricultural and Consumer Services-Office of Agricultural Water Policy. Nitrogen Best Management Practices (BMPs) for Florida Ridge Citrus [Online]. http://www. floridaagwaterpolicycom/PDFs/BMPs/Ridge%20BMP%20Total%20Package.pdf (Verified 5 October 2003).
5. Giles, D. K., M. J. Delwiche, and R. B. Dodd. 1988. Electronic measurement of tree canopy volume. Transactions of the ASAE 31(1): 264-272.
6. Jackson L. K. A. K. Alva, D. P. H. Tucker, and D. V. Calvert. 1995. Factors to consider in developing a nutrition program. In Nutrition of Florida Citrus Trees, eds. D. P. H. Tucker, A. K. Alva, L. K. Jackson, and T. A. Wheaton, 3-11. Gainesville, Fla.: IFAS, University of Florida.
7. Kramer, R. 1998. Chemometric Techniques for Quantitative Analysis. New York: Marcer Dekker, Inc.
8. LABINS. 1999. Land Boundary Information System - Florida Department of Environmental Protection. Aerial Photograph fox Florida Citrus [Online]. Available at http://data.labins.org/2003/MappingData/DOQQ/doqq_99_utm.cfm
9. Li, B., J. D. Whitney, W. M. Miller, and T. A. Wheaton. 2002. Ultrasonic-based canopy volume measurements of citrus trees for precision agriculture. ASAE Paper No. 021053. St. Joseph, Mich.: ASAE.
10. Miller, W. M., and J. D. Whitney. 1999. Evaluation of weighing systems for citrus yield monitoring. Applied Engineering in Agriculture 15(6): 609-614.
11. NRCS, SSD, USDA. 2001. Official Soil Series Descriptions. [Online] Available at: http://ortho.ftw.nrcs.usda..gov/osd/. (Verified on 23 March 2004).
12. Roper, B. E. 1988. Grove sprayer. U.S. Patent No. 4768713.
13. SAS. 1990. SAS User's Guide: Statistics Ver. 6. Cary, N.C.: SAS Institute, Inc.
14. Schueller, J. K., J. D. Whitney, T. A. Wheaton, W. M. Miller, and A. E. Turner. 1999. Low-cost automatic yield mapping in hand-harvested citrus. Computers and Electronics in Agriculture 23(2): 145-153.
15. Schumann, A. W., A. Fares, A. K. Alva, and S. Paramasivam. 2003. Response of 'Hamlin' orange to fertilizer source, rate and irrigated area. Proc. Fla. State Hort. Soc. 116(21): 372-381.
16. Schumann, A. W., K. Hostler, W. M. Miller, and Q. U. Zaman. 2004. Sensor-based automatic yield monitoring for manually harvested citrus. ASAE Paper No. 041098. St. Joseph, Mich.: ASAE.
17. Schumann, A. W., and Q. U. Zaman. 2005. Software development for real-time mapping of ultrasonic tree canopy size. Computers and Electronics in Agriculture 47(1): 25-40.
18. Strang, J. 2004. Personal communication. Citrus Production Manager. Auburndale, Fla.: Gapway Groves.
19. Tucker, D. P. H., A. K. Alva, L. K. Jackson, and T. A. Wheaton. 1995. Nutrition of Florida citrus trees, SP 169. Gainesville, Fla.: University of Florida, Co-op. Extension Service.
20. Tumbo, S. D., M. Salyani, J. D. Whitney, T. A. Wheaton, and W. M. Miller. 2002a. Investigation of laser and ultrasonic ranging sensors for measurement of citrus canopy volume. Applied Engineering in Agriculture 18(3): 367-372.
21. Tumbo, S. D., J. D. Whitney, W. M. Miller, and T. A. Wheaton. 2002b. Development and testing of a citrus yield monitor. Applied Engineering in Agriculture 18(4): 399-403.
22. Whitney, J. D., W. M. Miller, T. A. Wheaton, M. Salyani, and J. K. Schueller. 1999. Precision farming applications in Florida citrus. Applied Engineering in Agriculture 15(5): 399-403.
23. Zaman, Q. U., and M. Salyani. 2004. Effects of foliage density and ground speed on ultrasonic measurements of tree volume. Applied Engineering in Agriculture 20(2): 173-178.
24. Zaman, Q. U., A. W. Schumann, and W. M. Miller. 2005. Variable rate nitrogen application in Florida citrus based on ultrasonically-sensed tree size. Applied Engineering in Agriculture 21 (3): 331-335.