| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
USDA-ARS, Coastal Plains Soil, Water, and Plant Res. Ctr., 2611 W. Lucas St., Florence, SC 29501-1242
* Corresponding author (sadler{at}florence.ars.usda.gov).
Precision farming has created a critical need for spatial data on crop yield and related soil characteristics. However, because data are not without cost, users need practical guidelines for spatial resolution on which to collect soil and plant data. Our objectives were (i) describe variation observed in crop response in the southeastern Coastal Plain of the USA, (ii) to compare it with variation in other regions, and (iii) to offer suggestions for precision farming practices in the southeastern Coastal Plain. From 1985 to 1995, corn (Zea mays L.), wheat (Triticum aestivum L.), soybean [Glycine max (L.) Merr.], and grain sorghum [Sorghum bicolor (L.) Moench] yields were mapped at from 10- to 20-m resolution in an 8-ha field at Florence, SC. Also available were topography (30-m resolution), depth to clay (15 m), and in 1993, plant height on one date (9 m), canopy temperature on four dates (1.5 m), and detailed crop and soil information at selected sites. Yield of all crops in all years was significantly (P < 0.0007), though not strongly (median r2 = 0.3), correlated with soil map unit. In 1993, infrared thermometer canopy temperature minus air temperature (
Tc) was correlated with soil map unit, even on the second day after a 46-mm rain. Spherical semivariograms fitted to yields had ranges from 57 to 252 m (median = 79 m) and nugget/sill ratios from 0.00 to 0.56 (median = 0.32). Semivariograms for canopy temperature and plant height had ranges from 43 to 77 m. If the spatial structure for common soil characteristics matches the spatial structure for crop response, Coastal Plain soils may require study at finer resolution than the >100-m grid that is commonly used in precision farming.
Received for publication April 9, 1997.
This article has been cited by other articles:
|
|
 |
|
  D. L. Shaner, R. Khosla, M. K. Brodahl, G. W. Buchleiter, and H. J. Farahani How Well Does Zone Sampling Based on Soil Electrical Conductivity Maps Represent Soil Variability? Agron. J., September 8, 2008; 100(5): 1472 - 1480. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. L. Martin, P. J. Hodgen, K. W. Freeman, R. Melchiori, D. B. Arnall, R. K. Teal, R. W. Mullen, K. Desta, S. B. Phillips, J. B. Solie, et al. Plant-to-Plant Variability in Corn Production Agron. J., November 17, 2005; 97(6): 1603 - 1611. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. M. Johnson and E. P. Richard Jr. Sugarcane Yield, Sugarcane Quality, and Soil Variability in Louisiana Agron. J., April 27, 2005; 97(3): 760 - 771. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Shahandeh, A. L. Wright, F. M. Hons, and R. J. Lascano Spatial and Temporal Variation of Soil Nitrogen Parameters Related to Soil Texture and Corn Yield Agron. J., April 27, 2005; 97(3): 772 - 782. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Roel and R. E. Plant Factors Underlying Yield Variability in Two California Rice Fields Agron. J., September 1, 2004; 96(5): 1481 - 1494. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. N. Kravchenko Influence of Spatial Structure on Accuracy of Interpolation Methods Soil Sci. Soc. Am. J., September 1, 2003; 67(5): 1564 - 1571. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. F. Perez-Quezada, G. S. Pettygrove, and R. E. Plant Spatial-Temporal Analysis of Yield and Soil Factors in Two Four-Crop-Rotation Fields in the Sacramento Valley, California Agron. J., May 1, 2003; 95(3): 676 - 687. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. M. Johnson, R. G. Downer, J. M. Bradow, P. J. Bauer, and E. J. Sadler Variability in Cotton Fiber Yield, Fiber Quality, and Soil Properties in a Southeastern Coastal Plain Agron. J., November 1, 2002; 94(6): 1305 - 1316. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Perfect and J. Caron Spectral Analysis of Tillage-Induced Differences in Soil Spatial Variability Soil Sci. Soc. Am. J., September 1, 2002; 66(5): 1587 - 1595. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. P. Schmidt, R. K. Taylor, and G. A. Milliken Evaluating the Potential for Site-Specific Phosphorus Applications Without High-Density Soil Sampling Soil Sci. Soc. Am. J., January 1, 2002; 66(1): 276 - 283. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. G. Mueller, F. J. Pierce, O. Schabenberger, and D. D. Warncke Map Quality for Site-Specific Fertility Management Soil Sci. Soc. Am. J., September 1, 2001; 65(5): 1547 - 1558. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E.J. Sadler, P. J. Bauer, and W. J. Busscher Site-Specific Analysis of a Droughted Corn Crop: I. Growth and Grain Yield Agron. J., May 1, 2000; 92(3): 395 - 402. [Abstract] [Full Text]
|
|
|
|
|
|
J. Bouma, J. Stoorvogel, B.J. van Alphen, and H.W.G. Booltink Pedology, Precision Agriculture, and the Changing Paradigm of Agricultural Research Soil Sci. Soc. Am. J., November 1, 1999; 63(6): 1763 - 1768. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Crop Science | Vadose Zone Journal | |||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
