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| Publication Type:
| Refereed |
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| Author(s): | Zagal, Erick |
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| Author Affiliation: | Department of Soil Sciences, Division of Plant Nutrition and Soil Fertility, Swedish University of Agricultural Sciences, Sweden |
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| Title: | Carbon distribution and nitrogen partitioning in a soil-plant system with barley (Hordeum vulgare L.), ryegrass (Lolium perenne) and rape (Brassica napus L.) grown in a 14CO2-atmosphere |
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| Source: | Plant and Soil. Vol. 166, No. 1, 1994, p. 63-74. |
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| Publishing Information: | Dordrecht, Netherland: Martinus Nijhoff Publishers |
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| # of Pages: | 12 |
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| Related Web URL: | http://link.springer.com/article/10.1007/BF02185482
Last checked: 10/14/2015
Notes: Abstract only |
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| Keywords: | TIC Keywords: Carbon; Nitrogen fertilizers; Lolium perenne; Root systems; Nitrogen level; Chemical transformation; Nitrogen uptake; Biomass; Photosynthates; Immobilization; Nitrogen mineralization
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| Abstract/Contents: | "To examine the influence of plant-microorganism interactions on soil-N transformations (e.g. net mineralization, net immobilization) a pot experiment was conducted in a 14C-labelled atmosphere by using different (two annuals, one perennial) plants species. It was assumed that variation in below-ground, microorganism-available C would influence N transformations in soil. Plant species were fertilized (low rate) with 15N-labelled nitrogen and grown, during days 13 and 62 after germination, in a growth chamber with a 14C-labelled atmosphere. Nitrification was inhibited by using a nitrapyrin (N-Serve). During the chamber period, shoots were harvested, and associated roots and soil were collected on two sampling occasions, e.g. after 4 and 7 weeks in the growth chamber. The distribution of net (%) assimilated 14C was significantly affected by both plant and time factors, and there was a significant plant x time interaction. There were significant differences between plants in all plant-soil compartments examined as well as in the degree of the plant x time interaction. Differences in the 14C distribution between plants were due to both interspecific and developmental variation. In general, when comparing 15N and 14C quantities between species, many of the differences found between plants can be explained by the differences determined in the weight of shoot or root parts. Despite the fact that amounts of C released were greater in ryegrass than in the other plant-treatments no unequivocal evidence was found to show that the effects of plant-microorganism interactions on soil-N mineralization were greater under ryegrass. Possible mechanisms accounting for the partitioning of N found among plant biomass, soil biomass and soil residues are discussed." |
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| Language: | English |
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| References: | 50 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zagal, E. 1994. Carbon distribution and nitrogen partitioning in a soil-plant system with barley (Hordeum vulgare L.), ryegrass (Lolium perenne) and rape (Brassica napus L.) grown in a 14CO2-atmosphere. Plant Soil. 166(1):p. 63-74. |
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