Abstract
Spatial variability of plant growth has been a major problem for plant physiologists, agronomists, agro-foresters and soil scientists comparing or modelling treatment effects on acid sandy soils in the Sahel. While aerial photographs from aeroplanes or satellite images may provide valuable information for the surveying of large areas, their use for individual small experiments or farmers' fields has been limited due to high costs, restricted availability, and unsatisfactory resolution. As a simple alternative, a commercially available Zeppelin-type balloon, dragged on a rope by a camel, was fitted with an standard 35 mm camera and a remote control system. Flight altitude varied from 20 m to 500 m above ground. A ground-based camera mounted vertically on a tripod was used to center the Zeppelin over the target area. The high-resolution true colour negatives and colour infrared slides obtained by this device were used to unravel the history of farmers' management strategies for maintaining soil productivity, to monitor treatment effects and crop growth variability in an on-station experiment, and to visualize light absorption by photosynthesis in crops and trees. Such non-destructively collected data may serve as quick but reliable references for ground measurements in a wide range of experiments with loosely-spaced crops, bushes, and trees. ei]B E Clothier
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Bationo A, Christianson B C, Baethgen W E and Mokwunye A U 1992 A farm-level evaluation of nitrogen and phosphorus fertilizer use and planting density for pearl millet production in Niger. Fert. Res. 31, 175–184.
Bausch W C 1993 Soil background effects on reflectance-based crop coefficients for corn. Remote Sensing Environ. 46, 213–222.
Bleich K E and Hammer R 1996 Soils of western Niger. In Wind Erosion in Niger: Implications and Control Measures in a Millet-based Farming System. Eds. BBuerkert, B EAllison and MvonOppen. pp 23–32. Kluwer Academic Publishers. Dordrecht, The Netherlands (In press).
Brouwer J, Geiger S C and Vandenbeldt R J 1992 Variability in the growth of Faidherbida albida: a termite connection? In Faidherbida albida in the West African semi-arid Tropics. Ed. R JVandenbeldt. Proceedings of a Workshop, 22–26 April 1991, Niamey, Niger. pp 131–135. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India; and International Centre for Research in Agroforestry, Nairobi, Kenya.
Buerkert A, Stern R D and Marschner H 1995a Post-stratification clarifies treatment effects on millet growth in the Sahel. Agron. J. 87, 752–761.
Buerkert A, Lawrence P R, Williams J H and Marschner H 1995b Non-destructive measurements of biomass in millet, cowpea, groundnut, weeds, and grass swards using reflectance, and their application for growth analysis. Exp. Agric. 31, 1–11.
Capper J E 1907 Photographs of Stonehenge, as seen from a war balloon. Archaeologia or miscellaneous tracts relating to antiquity, 2nd series 10, 571–572.
Chase R and Boudouresque E 1987 Methods to stimulate plant regrowth on bare Sahelian forest soils in the region of Niamey, Niger. Agric. Ecosyst. Environ. 18, 211–221.
Chavez P SJr. 1992 Comparison of spatial variability in visible and near-infrared spectral images. Photogram. Eng. Remote Sensing 60, 437–442.
Denison R F 1994 Digital processing of aerial photos for initial characterization of a long-term research site. Agronomy abstracts, 86th annual meeting, American Society of Agronomy, Madison, WI, USA.
Egan W G 1994 Radiative transfer properties of the Sahara region. Remote Sensing Environ. 50, 182–193.
FAO-UNESCO 1988 Food and Agriculture Organisation of the United Nations-United Nations Education Scientific and Cultural Organization. Soil map of the world. UNESCO, Paris, France.
Frederiksen P and Lawesson J E 1992 Vegetation types and patterns in Senegal based on multivariate analysis of field and NOAA-AVHRR satellite data. J. Veget. Sci. 3, 535–544.
Geiger S C and Manu A 1993 Soil surface characteristics and variability in the growth of millet in the plateau and valley region of Western Niger. Agric. Ecosyst. Environ. 45, 203–211.
Hebel A 1995 Influence of organic matter on the variability of pearl millet growth in space and time in Luvic Arenosols in the Sahel (Sadoré / Niger). Ph.D. Thesis. Hohenheimer Bodenkundliche Hefte No. 24, Institut für Bodenkunde und Standortslehre, University of Hohenheim, Germany.
ICARDA Annual Report 1991 International Centre for Agricultural Research in the Dry Areas, Aleppo, Syria.
Kleman J and Fagerlund E 1987 Influence of different nitrogen and irrigation treatments on the spectral reflectance of barley. Remote Sensing Environ. 21, 1–14.
Leamer R W, Weber D A and Wiegand C L 1975 Pattern recognition of soils and crops from space. Photogram. Eng. Remote Sensing 1, 471–478.
McIntire J 1986 Constraints to fertilizer use in sub-Saharan Africa. In Management of Nitrogen and Phosphorus Fertilizers in Sub-Saharan Africa. Eds. A UMokwunye and P L GVlek. pp 33–57. Martinus Nijhoff, Dordrecht, The Netherlands.
Mitchell A R, Pinter P J, Guerrero J N, Fernandez C B and Marble V L 1990 Spectral reflectance measurements of alfalfa under sheep grazing. Agron. J. 82, 1098–1103.
Nageswara R C, Williams J H, Rao V M and Wadia K D R 1992 A hand-held red-infrared radiometer for measuring radiation interception by crop canopies. Field Crops Res. 29, 353–360.
Rebafka F P, Hebel A, Bationo A, Stahr K and Marschner H 1994 Short- and long-term effects of crop residue application and of phosphorus fertilization on pearl millet yield on an acid sandy soil in Niger, West Africa. Field Crops Res. 36, 113–124.
Redelfs M S, Stone L R, Kanemasu E T and Kirkham M B 1987 Greenness-leaf area index relationships of seven row crops. Agron. J. 79, 254–259.
Scarpace F L 1978 Densiometry on multi-emulsion imagery. Photogram. Eng. Remote Sensing 4, 1279–1292.
Sivakumar M V K, Maidoukia A and Stern R D 1993 Agroclimatology of West Africa: Niger. ICRISAT Information Bulletin no. 5. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, A P 502 324, India. 116 p.
Smith J L, Logan J A and Gregoire T G 1992 Using aerial photography and geographic information systems to develop databases for pesticide evaluations. Photogram. Eng. Remote Sensing 58, 1447–1452.
Soil Management Support Services 1988 Keys to soil taxonomy. Technical monograph 6, fourth printing. Dept. of Agronomy, Cornell Univ., Ithaca, NY, USA.
Townshend J R G and Justice C O 1990 The spatial variation of vegetation changes at very coarse scales. Int. J Remote Sensing 11, 149–157.
Thenkabail P S, Ward A D, Lyon J G and Merry C J 1994 Thematic mapper vegetation indices for determining soybean and corn growth parameters. Photogram. Eng. Remote Sensing 60, 437–442.
Tucker C J, Elgin J H, McMurtrey J E and Fan C J 1979 Monitoring corn and soybean crop development with hand-held radiometer spectral data. Remote Sensing Environ. 8, 237–248.
Tucker C J and Sellers P J 1986 Satellite remote sensing of primary production. Int. J. Remote Sensing 7, 1395–1416.
Wendt J W, Berrada A Gaoh M G and Schulze D G 1993 Phosphorus sorption characteristics of productive and unproductive Niger soils. Soil Sci. Soc. Am. J. 57, 766–773.
West L T, Wilding L P, Landeck J K and Calhoun F G 1984 Soil Survey of the ICRISAT Sahelian Center, Niger, West Africa. Texas A & M University/TropSoils, College Station, TX, USA.
Wiegand C L, Richardson A J, Escobar D E and Gerbermann A H 1991 Vegetation indices in crop assessments. Remote Sensing Environ. 35, 105–119.
Wilding L P and Hossner L R 1987 Causes and effects of acidity in Sahelian soils. In Soil, Crop, and Water Management Systems for Rainfed Agriculture in the Sudano-Sahelian Zone. Proc. International Workshop, ICRISAT Sahelian Centre, Niamey, Niger, 7–11 Jan. 1987. Patancheru, A P 502 324, India.
Zhu Z and Evans D L 1992 Mapping midsouth forest distributions. J. For. 90, 27–30.
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Buerkert, A., Mahler, F. & Marschner, H. Soil productivity management and plant growth in the Sahel: Potential of an aerial monitoring technique. Plant Soil 180, 29–38 (1996). https://doi.org/10.1007/BF00015408
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DOI: https://doi.org/10.1007/BF00015408