caa a22 4500 477112153 CHVBK 20180405111612.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00029061 doi (NATIONALLICENCE)springer-10.1007/BF00029061 A comparison of soil core sampling and minirhizotrons to quantify root development of field-grown potatoes [Elektronische Daten] [F. De Ruijter, B. Veen, M. Van Oijen] Root growth of potato (Solanum tuberosum L.) is sensitive to soil conditions. A reduced root system size can result in reduced uptake of water and/or nutrients, leading to impaired crop growth. To understand the mechanisms by which soil conditions affect crop growth, study of temporal and spatial development of roots is required. In field experiments, effects of soil temperature, soil compaction and potato cyst nematodes (Globodera pallida) on root growth of potato cultivars were studied using two methods: core sampling and vertically oriented minirhizotrons. Minirhizotrons showed relatively more roots in deeper soil layers than core sampling, probably because of preferential root growth along the tube. Spatial distribution of roots should therefore be analysed by core sampling. To eliminate differences in spatial distribution, total root systems as measured by both methods were compared. Nematodes, cultivars and time did not affect the relationship between both methods. Soil compaction, however, affected it because of a strong response of root length in bulk soil and small differences in root number against the minirhizotron, suggesting that soil coring has to be used to study effects of different bulk densities. With both methods, sequential measurements of roots give the net effect of root growth and decay. Data on root turnover can only be obtained with minirhizotrons by comparing video recordings of different dates. Other information obtained with minirhizotrons is the average orientation of roots. Moreover, the minirhizotron method has the advantage of demanding less labour. Kluwer Academic Publishers, 1996 potato cyst nematodes ( Globodera pallida ) nationallicence rooting depth nationallicence soil compaction nationallicence soil temperature nationallicence spatial distribution nationallicence De Ruijter F. DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO), P.O. Box 14, 6700 AA, Wageningen, the Netherlands aut Veen B. DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO), P.O. Box 14, 6700 AA, Wageningen, the Netherlands aut Van Oijen M. Department of Theoretical Production Ecology, Wageningen Agricultural University, the Netherlands aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 182/2(1996-05-01), 301-312 0032-079X 182:2<301 1996 182 11104 https://doi.org/10.1007/BF00029061 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00029061 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- De Ruijter F. DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO), P.O. Box 14, 6700 AA, Wageningen, the Netherlands aut NATIONALLICENCE 700 1- Veen B. DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO), P.O. Box 14, 6700 AA, Wageningen, the Netherlands aut NATIONALLICENCE 700 1- Van Oijen M. Department of Theoretical Production Ecology, Wageningen Agricultural University, the Netherlands aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 182/2(1996-05-01), 301-312 0032-079X 182:2<301 1996 182 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer