Microbial biomass in paddy soil

Hasebe, Akira; Kanazawa, Susumu; Takai, Yasuo

doi:10.1080/00380768.1984.10434681

Cited by 23 publications

(2 citation statements)

References 15 publications

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“…The ratio of bacterial to fungal biomass in paddy field soil is possibly different from the value found by Anderson and Domsch (1980) and this may affect the k K factor. Hasebe et al (1984) showed that the proportion of bacterial biomass in total microbial biomass was 0.82-0.99 in paddy field soil by the direct counting method, indicating the predominance of bacterial biomass over fungal biomass. In contrast, the proportion of fungal biomass was inferred to be about 0.67 in paddy field soil based on the estimation of rDNA abundance in paddy field soil (Sakai et al 2012).…”

Section: Soil Biomass K C and N In Anjo Paddy Field Under Rice Cultimentioning

confidence: 99%

Estimation of microbial biomass potassium in paddy field soil

Yamashita

Honjo²,

Nishida

et al. 2014

Soil Science and Plant Nutrition

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Potassium (K) in microbial cells, microbial biomass K, in soil has been recently recognized as a K pool for plant growth. We determined soil microbial biomass K in paddy fields to reveal its importance as a K pool in paddy field soil for the first time. Microbial biomass K ranged from 5 to 21 mg K kg −1 in the soil samples periodically collected from a paddy field and the value corresponded to 41% of the exchangeable K on average. Both microbial biomass K and exchangeable K increased conspicuously due to the long-term application of livestock manure compost or rice straw compost. Biomass K was higher than exchangeable K under K-deficient conditions in the long-term experimental plots without K application. The present study revealed that the microbial biomass contained considerable amounts of K in paddy field soil, indicating the need for evaluation of the microbial biomass K as a source and a stock of K in soil that has been overlooked.

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Section: Soil Biomass K C and N In Anjo Paddy Field Under Rice Cultimentioning

confidence: 99%

Estimation of microbial biomass potassium in paddy field soil

Yamashita

Honjo²,

Nishida

et al. 2014

Soil Science and Plant Nutrition

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“…In addition, these increases indicated that BL additions improved the nutrient status of inherent N compounds in soil compared to soil receiving inorganic N fertilizer. It is also important to note that previous researchers have reported that increases in N cycling enzymes corresponds to the growth of microbial biomass because exocellular enzymes are produced by soil microorganisms [75,76]. Kanazawa and Kiyota [77] reported increases in L-glutaminase and L-asparaginase activities in soils with farmyard manure when compared to chemical fertilizer or a no fertilizer control.…”

Section: Amidohydrolasesmentioning

confidence: 94%

Long-Term Cropping Management Practices Affect the Biochemical Properties of an Alabama Ultisol

Watts,

He,

Yin

et al. 2024

Soil Systems

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Interest in improving the long-term sustainability of agricultural production systems has focused on identifying management practices that promote soil health. No tillage, cover cropping, and amending soils with broiler (Gallus gallus domesticus L.) litter are commonly adopted conservation practices that have been shown to improve soil fertility and crop yield. However, the overall influence of these conservation practices on soil health in the southeastern US are not well understood. Thus, a study was conducted to evaluate the influence of tillage, broiler litter (BL) applications, and cropping systems on soil biochemical properties. Soils were collected from field research plots under long-term management (>than 25 years of tillage, 15 years of broiler litter application, and 15 years of cropping system). Soil microbial biomass, C, N, and P, amidohydrolases, and dissolved organic matter (DOM) were evaluated as indicators of soil health. Adopting tillage and BL into the agricultural management system modified the biochemical parameters of the soils evaluated. Most of these modifications occurred in the 0–5 cm depth. Higher microbial biomass carbon (MBC; 85%) and nitrogen (MBN; 10%) and enzyme activities of asparaginase (65%) and glutaminase (70%) were observed in the 0–5 cm depth under no tillage (NT) compared to conventional tillage (CT), indicating greater biological activities were established in these soil ecosystems. Broiler litter applications increased microbial biomass N and activities of asparaginase and glutaminase in both soil depths. In addition, microbial biomass phosphorus (MBP) was increased following BL application in the 0–5 cm depth. The results suggest that long-term management of NT and BL additions can improve the health of eroded southeastern US soils by altering the soil biochemical parameters.

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Fluoreszenzmikroskopisch bestimmte mikrobielle Biomasse und deren Beziehung zum Gesamtkohlenstoffgehalt und zur Dehydrogenaseaktivität in ausgewählten Bodenproben

Schuller

1989

J Plant Nutrition & Soil

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In der Gewässermikrobiologie bewährte Techniken zur epifluoreszenzmikroskopischen Bestimmung mikrobieller Biomassen wurden für die Untersuchung von Böden eingesetzt. Zum Arbeitsgang für die Biomassebestimmung gehörten Ultraschallbehandlung, Filtration mit Nuclepore‐Filtern, die Erfassung von Zellgrößenklassen und die gesonderte Zählung kleiner Bakterien. Die mikrobielle Biomasse eines Ackerbodens (Ap mit Slu) war nach der Ultraschallbehandlung fast doppelt so groß wie in unbehandelten Proben. In 16 wurzelfreien Proben, die unterschiedlichen Mineralböden entnommen worden waren, betrug die Bakterienbiomasse zwischen 0,22 und 7,50 mg C/g Boden. Sie übertraf damit die Pilzbiomasse im allgemeinen um den Faktor 2 bis 35. Bis zu 98% des organisch gebundenen Gesamtkohlenstoffs (Corg) im Boden war in der mikrobiellen Biomasse enthalten. In nicht landwirtschaftlich genutzten Oberböden war die Dehydrogenaseaktivität eng mit dem Corg‐Gehalt und der mikrobiellen Biomasse korreliert (n = 7, rmult = 0,972, α = 0,001).

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Microbial biomass in paddy soil

Cited by 23 publications

References 15 publications

Estimation of microbial biomass potassium in paddy field soil

Estimation of microbial biomass potassium in paddy field soil

Long-Term Cropping Management Practices Affect the Biochemical Properties of an Alabama Ultisol

Fluoreszenzmikroskopisch bestimmte mikrobielle Biomasse und deren Beziehung zum Gesamtkohlenstoffgehalt und zur Dehydrogenaseaktivität in ausgewählten Bodenproben

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