Relations between Soil Microbial Activity and Soil Properties in Grassland

Higashida, Shuji; Takao, Kinya

doi:10.1080/00380768.1986.10557540

Cited by 23 publications

(14 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the case of the fungi, although the number of fungal spores tended to decrease by liming, the hyphal length was increased, suggesting that the physiological activity of the fungi was increased by timing. These results are in agreement with the findings of HIGASIDOA and TAKAO (8), in which the soil pH primarily accounted for the microbial activities in the uppermost layer of grassland.…”

Section: Microbial Activitiessupporting

confidence: 92%

Effects of Liming on Grass Growth, Soil Solution Composition, and Microbial Activities

Hojito

Higashida

Nishimune

et al. 1987

Soil Science and Plant Nutrition

Self Cite

View full text Add to dashboard Cite

In order to determine the effect of liming on grass growth, the chemical composition of the soil solution and microbial activities were analyzed. Ground limestone (CaCO.) was topdressed at the rates of 0, 2, 4, and 8 t/ha to a 9 year old orchardgrass sward. The effects of liming on the soil were observed only in the surface layer (0-5 cm) during the 6 month period after lime application. Although the yield of grass was not distinctly affected by Iiming, the amount of phosphorus (P) and calcium (Ca) absorbed by the grass was considerably increased. With increasing rates in lime application, the concentrations of Ca and sulCate (S), and the value of the pH in the soil solution (0-2 cm layer) were increased, while the concentrations of a1uminum (AI), P, and nitrogen (N) were decreased. No change was observed in the chemical composition of the soil solution from the layers below 5 cm. The microbial activities 2,3,5-triphenyltetrazoJium chloride (TTC)-reducing activity. fructose or urea-decomposing activity, and bacterial numbers) were increased by liming.

show abstract

Section: Microbial Activitiessupporting

confidence: 92%

Effects of Liming on Grass Growth, Soil Solution Composition, and Microbial Activities

Hojito

Higashida

Nishimune

et al. 1987

Soil Science and Plant Nutrition

Self Cite

View full text Add to dashboard Cite

show abstract

“…Dependendo do meio de cultura utilizado, da temperatura de incubação e da diluição do inóculo, pelo menos um período de 4 a 7 dias deve ser adotado, que foi próximo ao empregado por Higashida & Takao (1986), isto é, 7 dias de incubação à temperatura de 30°C. O comportamento observado para o crescimento das bactéria totais e Bacillus spp.…”

Section: Resultsunclassified

Quantificação de bactérias totais e esporuladas no solo

Vieira

Nahas

2000

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

RESUMO: Este trabalho analisou o efeito da temperatura e período de incubação e da diluição do inóculo, em dois meios de cultura, sobre a quantificação de bactérias totais e esporuladas. O crescimento quantitativo e qualitativo de bactérias totais e esporuladas depende tanto do meio de cultura, temperatura, diluição e tempo utilizados como da interação desses fatores. O meio de TSA apresentou maior contagem que o meio de Thorton de unidades formadoras de colônias (UFC) de bactérias totais mas não de Bacillus spp. As colônias crescidas no meio de TSA apresentaram maior tamanho e forma mais nítida. O cultivo à temperatura de 30°C propiciou maior número de UFC que a 25°C, sobretudo nos primeiros dias de incubação. O crescimento bacteriano correspondeu a uma equação de 3 o grau. Dependendo do meio de cultura, da temperatura de incubação e da diluição, os períodos de máximo crescimento foram de 4,9 a 6,9 dias para as bactérias totais e de 4,4 a 7,2 dias para Bacillus spp. Embora tenham sido utilizadas diluições decimais dos inóculos, as proporções entre as contagens variaram de 6,3 a 10,0 vezes para as bactérias totais e de 2,0 a 7,0 para as esporuladas. Palavras-chave: Bacillus spp., bactérias totais, solo QUANTIFICATION OF TOTAL AND SPORULATING BACTERIA IN SOILSABSTRACT: This work studied the effect of the temperature and incubation time and of the inoculum dilution, in two culture media, on the quantification of total and sporulating bacteria. The quantitative and qualitative growth of total and sporulating bacteria depended on the growth medium, temperature, dilution and incubation time, as well as on the interaction of these factors. Tryptic Soil Agar medium presented a greater number of colony forming units (CFU) for total bacteria. However, for Bacillus spp. there were higher counts on Thorton medium. Colonies grown on Tryptic Soy Agar medium were of larger size and had a more clearly defined shape. An incubation temperature of 30 o C yielded more CFU than incubation at 25 o C, especially during the first days of incubation. Bacterial growth was fit to a mathematical model and corresponded to a third degree equation. Depending on the growth culture medium, incubation temperature and dilution, periods of maximum growth were between 4.9 and 6.9 days for total bacteria and between 4.4 and 7.2 days for Bacillus spp. Although decimal inoculum dilutions were used, proportions between counts based on different conditions ranged from 6.3 to 10.0 times for total bacteria and from 2.0 to 7.0 times for sporulating bacteria.

show abstract

“…Although no change in the size of the soil biomass C was observed in the soil (Table 1), changes in species composition occurred within the soil microbial biomass (data not shown). Soil microbial activity has been correlated to soil pH, with an increase in microbial activity as soil pH increases (Higashida et al, 1986;Hojito et al, 1987). Increase in %14C respired by the roots and soil with increasing soil pH may, therefore, be related to increased root exudation stimulated by some change to the soil microbial biomass.…”

Section: Discussionmentioning

confidence: 99%

The effect of soil pH on rhizosphere carbon flow of Lolium perenne

Meharg

Killham

1990

Plant Soil

View full text Add to dashboard Cite

Perennial rye-grass plants were grown at 15°C in microcosms containing soil sampled from field plots that had been maintained at constant pH for the last 30 years. Six soil pH values were tested in the experiment, with pH ranging from 4.3-6.5. After 3 weeks growth in the microcosms, plant shoots were exposed to a pulse of 14C-CO~. The fate of this label was determined by monitoring 14C-CO2 respired by the plant roots/soil and by the shoots. The 14C remaining in plant roots and shoots was determined when the plants were harvested 7 days after receiving the pulse label.

show abstract

Relations between Soil Microbial Activity and Soil Properties in Grassland

Cited by 23 publications

References 19 publications

Effects of Liming on Grass Growth, Soil Solution Composition, and Microbial Activities

Effects of Liming on Grass Growth, Soil Solution Composition, and Microbial Activities

Quantificação de bactérias totais e esporuladas no solo

The effect of soil pH on rhizosphere carbon flow of Lolium perenne

Contact Info

Product

Resources

About