Universität zu Köln

Hoffmeister, Dirk ORCID: 0000-0002-8178-557X, Waldhoff, Guido, Korres, Wolfgang, Curdt, Constanze ORCID: 0000-0002-9606-9883 and Bareth, Georg (2016). Crop height variability detection in a single field by multi-temporal terrestrial laser scanning. Precis. Agric., 17 (3). S. 296 - 313. DORDRECHT: SPRINGER. ISSN 1573-1618

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Abstract

Information on crop height, crop growth and biomass distribution is important for crop management and environmental modelling. For the determination of these parameters, terrestrial laser scanning in combination with real-time kinematic GPS (RTK-GPS) measurements was conducted in a multi-temporal approach in two consecutive years within a single field. Therefore, a time-of-flight laser scanner was mounted on a tripod. For georeferencing of the point clouds, all eight to nine positions of the laser scanner and several reflective targets were measured by RTK-GPS. The surveys were carried out three to four times during the growing periods of 2008 (sugar-beet) and 2009 (mainly winter barley). Crop surface models were established for every survey date with a horizontal resolution of 1 m, which can be used to derive maps of plant height and plant growth. The detected crop heights were consistent with observations from panoramic images and manual measurements (R-2 = 0.53, RMSE = 0.1 m). Topographic and soil parameters were used for statistical analysis of the detected variability of crop height and significant correlations were found. Regression analysis (R-2 < 0.31) emphasized the uncertainty of basic relations between the selected parameters and crop height variability within one field. Likewise, these patterns compared with the normalized difference vegetation index (NDVI) derived from satellite imagery show only minor significant correlations (r < 0.44).

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hoffmeister, Dirk UNSPECIFIED orcid.org/0000-0002-8178-557X UNSPECIFIED Waldhoff, Guido UNSPECIFIED UNSPECIFIED UNSPECIFIED Korres, Wolfgang UNSPECIFIED UNSPECIFIED UNSPECIFIED Curdt, Constanze UNSPECIFIED orcid.org/0000-0002-9606-9883 UNSPECIFIED Bareth, Georg UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-274831
DOI:	10.1007/s11119-015-9420-y
Journal or Publication Title:	Precis. Agric.
Volume:	17
Number:	3
Page Range:	S. 296 - 313
Date:	2016
Publisher:	SPRINGER
Place of Publication:	DORDRECHT
ISSN:	1573-1618
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Geosciences > Geographisches Institut
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SURFACE SOIL-MOISTURE; DIFFERENT GROWTH-STAGES; SPATIAL VARIABILITY; ESTIMATING BIOMASS; DENSITY; CANOPY; LIDAR; RICE; PATTERNS Multiple languages Agriculture, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27483