Effects of heavy doses of fertilizer salts on soil microbial biomass and microbial respiratory activity
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- Hori Kaneaki
- Sustainable Vegetable Production Research Division, NARO Western Region Agricultural Research Center(NARO
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- Urashima Yasufumi
- WARC)
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- Shiomi Fumitake
- Sustainable Vegetable Production Research Division, NARO Western Region Agricultural Research Center(NARO
Bibliographic Information
- Other Title
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- 肥料塩類の多量施用が土壌微生物バイオマスとバイオマス当たりの呼吸活性に及ぼす影響
- ヒリョウ エンルイ ノ タリョウシヨウ ガ ドジョウ ビセイブツ バイオマス ト バイオマス アタリ ノ コキュウ カッセイ ニ オヨボス エイキョウ
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Abstract
The effects of large-quantity applications of N, P, K, Ca, or Mg or a compound of these five components on soil microbial biomass (biomass) and soil microbial respiratory activity (respiratory activity) were investigated. It was found that the microbial biomass and the respiratory activity were affected by both the quantity and the kind of element. The biomass in the P-, K-, Ca-, or Mg-treatment was not significantly different from that in non-fertilizer treatment. However, the biomass showed the maximum value in the compound treatment with 5 times the standard fertilizer level. The biomass tended to increase with the increase of the soil EC and did not decrease even with a high EC of 3 mS cm^<-1>. On the other hand, the respiratory activity decreased with an increase of the soil EC and remained at a low level under conditions of more than 1.0 mS cm^<-1>. Most fertilizer salts contained sulfate as an associated element. The relationship between the amount of sulfate application and the respiratory activity resembled that between EC and the respiratory activity. The respiratory activity remained at a low level under conditions of more than 2,000 mg kg^<-1> of sulfate. Thus, the respiratory activity decreased with an increase in the salt concentration, and EC or sulfate values that decreased the respiratory activity were almost the same as or somewhat higher than those recommended as a result of common soil diagnosis.
Journal
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- Soil Microorganisms
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Soil Microorganisms 67 (1), 14-21, 2013
Japanese Society of Soil Microbiology
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Keywords
Details 詳細情報について
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- CRID
- 1390282679231320064
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- NII Article ID
- 110009615643
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- NII Book ID
- AN00352796
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- ISSN
- 21896518
- 09122184
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- NDL BIB ID
- 024626445
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed