Results 261 to 270 of about 182,479 (288)
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ESTIMATING ROOT LENGTH DENSITY AND BIOMASS IN ASPARAGUS
Acta Horticulturae, 2002Soil type, crop management practices, annual plant growth patterns and seasonal changes in the soil environment all influence asparagus roots. This study describes the changes that occur in root growth over time in two contrasting soils and crop management systems.
D. Drost, D. Wilson
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Regulation of length and density of Arabidopsis root hairs by ammonium and nitrate
Journal of Plant Research, 2015Root hairs expand the effective root surface to increase the uptake of nutrients and water from the soil. Here the local effects of the two major nitrogen sources, ammonium and nitrate, on root hairs were investigated using split plates. In three contrasting accessions of A. thaliana, namely Col-0, Tsu-0 and Sha, root hairs were differentially affected
Thomas, Vatter +3 more
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Converting Root Numbers Observed at Minirhizotrons to Equivalent Root Length Density
Soil Science Society of America Journal, 1994Abstract Root length density (RLD) is the measure of plant root growth having greatest general utility. The use of clear material observation tubes, known as minirhizotrons (MR), in field soil has proved to be an effective method for measurement of root growth dynamics.
S. D. Merrill, D. R. Upchurch
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Agroforestry Systems, 2014
A field study was conducted at Hetian, southern Xinjiang, northwest China, to investigate root morphology as affected by interspecific interactions between jujube (Ziziphus jujuba Mill.) and wheat (Triticum aestivum L.). The treatments comprised (1) sole wheat, (2) 3-, 5- and 7-year-old sole jujube trees, and (3) intercropping of wheat/3-, 5- and 7 ...
B. J. Wang +7 more
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A field study was conducted at Hetian, southern Xinjiang, northwest China, to investigate root morphology as affected by interspecific interactions between jujube (Ziziphus jujuba Mill.) and wheat (Triticum aestivum L.). The treatments comprised (1) sole wheat, (2) 3-, 5- and 7-year-old sole jujube trees, and (3) intercropping of wheat/3-, 5- and 7 ...
B. J. Wang +7 more
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Length densities, occupancies and weights of apple root systems
Plant and Soil, 1993The root systems of apple trees from five orchards ranging in age from 1.5-y to 14-y were sampled to depths of between one and two metres using soil cores. Although trees came from orchards which differed in soil-type, tree spacings and management, consistent patterns were found in root systems. In orchards of 4-y and older, roots of adjacent trees met
K. A. Hughes, P. W. Gandar
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Plant and Soil, 1998
The spatial distribution of root length density (RLD) is important because it affects water and nutrient uptake. It is difficult to obtain reliable estimates of RLD because root systems are very variable and heterogeneous. We identified systematic trends, clustering, and anisotropy as geometrical properties of root systems, and studied their ...
Grabarnik, P. +2 more
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The spatial distribution of root length density (RLD) is important because it affects water and nutrient uptake. It is difficult to obtain reliable estimates of RLD because root systems are very variable and heterogeneous. We identified systematic trends, clustering, and anisotropy as geometrical properties of root systems, and studied their ...
Grabarnik, P. +2 more
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Ying yong sheng tai xue bao = The journal of applied ecology, 2006
Employing soil core method, an investigation in Maoershan Experiment Station was made on the root biomass, specific root length (SRL), and root length density (RLD) of Fraxinus mandshurica plantation (17 yr) within a growth season in stand level. The results showed that the total root biomass was 1,637 g x m(-2), in which, living biomass accounted for ...
Li, Mei +6 more
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Employing soil core method, an investigation in Maoershan Experiment Station was made on the root biomass, specific root length (SRL), and root length density (RLD) of Fraxinus mandshurica plantation (17 yr) within a growth season in stand level. The results showed that the total root biomass was 1,637 g x m(-2), in which, living biomass accounted for ...
Li, Mei +6 more
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Frontiers of Biology in China, 2006
Fine root turnover is a major pathway for carbon and nutrient cycling in terrestrial ecosystems and is most likely sensitive to many global change factors. Despite the importance of fine root turnover in plant C allocation and nutrient cycling dynamics and the tremendous research efforts in the past, our understanding of it remains limited.
Yunhuan Cheng +3 more
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Fine root turnover is a major pathway for carbon and nutrient cycling in terrestrial ecosystems and is most likely sensitive to many global change factors. Despite the importance of fine root turnover in plant C allocation and nutrient cycling dynamics and the tremendous research efforts in the past, our understanding of it remains limited.
Yunhuan Cheng +3 more
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Estimating Root Length Density by the Core‐Break Method
Soil Science Society of America Journal, 1989Abstract Rapid and accurate methods of measuring root length density (RLD, cm root cm −3 soil) are needed for verifying growth predictions and assessing genotypic differences.
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Sorghum root length density and the potential for avoiding striga parasitism
Plant and Soil, 1990Striga hermonthica is a serious root parasite of sorghum in the semiarid tropics. Successful parasitism is dependent on interactions of Striga seeds and host roots. Several sorghum cultivars have been found which resist parasitism. The basis of resistance is not well known.
O. Cherif-Ari, T. L. Housley, G. Ejeta
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