Fungi associated with roots of continuously cropped upland rice

Nishio, Mayuko; Kusano, Shigeru

doi:10.1080/00380768.1973.10432590

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…Continuous declines in crop yield and quality caused by the continuous monocropping has caught widespread attention (Nishio and Kusano 1973;Liu et al 2008;Nie et al 2008). In our study, the peanut yield and height significantly declined when grown in soil that had been continuously cropped for 16 years with annual fertilization from either chemical fertilizers or organic manure ( Fig.…”

Section: Discussionmentioning

confidence: 99%

Changes in the abundance and structure of bacterial communities under long-term fertilization treatments in a peanut monocropping system

Liu

Wang

et al. 2015

Plant Soil

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Background and aims Peanut yield and quality are seriously compromised by continuous monoculturing in the red soil region of southern China. Monoculturing can cause soil degradation and an increase in soil-borne diseases. This research aimed to investigate the influence of long-term peanut monocropping and different fertilization treatments on peanut growth, soil physical and chemical properties and soil microbial community. Methods A long-term fertilization experiment established in 1996 was utilized to examine the effect of various fertilization treatments including chemical and organic fertilizers treatments. Deep 16S rRNA gene pyrosequencing highlighted changes in the abundance and structure of bacterial communities, especially of the pathogenic and beneficial bacterial communities in long term chemical fertilizer treatment in comparison to the organic manure treatment. Results Chemical fertilizer treatment causes a shift in bacterial community structure and decrease in diversity under the long-term monocropping in comparison to organic fertilizer. The abundance of the bacterial pathogen Ralstonia solanacearum, a causative agent of peanut wilt, was found to be associated with a loss of community diversity and loss of the peanut yield. Conclusions The organic fertilizers more effectively increase microbial diversity in the soil and changed the community structure. Long-term use of the chemical fertilizer leads to a decrease in microbial diversity of the soil and an increase in R. solanacearum with associated increase of peanut wilt. The potential decrease in diversity and competition between the bacterial community and the pathogen may be a contributing factor to increased disease during long-term chemical fertilizer use.

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Section: Discussionmentioning

confidence: 99%

Changes in the abundance and structure of bacterial communities under long-term fertilization treatments in a peanut monocropping system

Liu

Wang

et al. 2015

Plant Soil

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“…In Japan, a fungus, Pyrenochaela sp., which has specific affinity to dryland rice, was found by NISHIO and KUSANO (7,9,10) to produce a growth inhibitor to several monocotyledonous crops including dryland rice. In the Philippines, harmful effects, however, appeared much earlier and visual symptoms differed, which may indicate differing activities of the biological agents.…”

Section: Discussionmentioning

confidence: 99%

“…But growing a crop continuously on the same piece of land may lead to some injurious soil effects. Inhibition in the growth of dryland rice when grown annually is well known in Japan (7,8). In the Philippines there is no clear evidence of harmful effects from its continuous cropping.…”

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confidence: 99%

Growth inhibition due to continuous cropping of dryland rice and other crops

Ventura

Watanabe

1978

Soil Science and Plant Nutrition

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“…Under the conditions adopted here, the recovery of hyphal length was only about 60%, using Pyrenochaeta sp., which is very common in upland rice fields in Japan (Nishio & Kusano, 1973) (Table 4). This low recovery may be due to still imperfect dispersion of soil.…”

Section: Recovery Of Bacteria and Fungal Hyphae Added To Soilmentioning

confidence: 99%

Direct-Count Estimation of Microbial Biomass in Soil Applied with Compost

Nishio¹

1983

Biological Agriculture & Horticulture

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The Janes-Mollison method was applied to estimate bacterial and fungal biomass in arable soil. Also examined were: 1) applicability of the line-intercept method for estimation of hypha! length; 2) relationship between dispersion time of soil and microbial counts; 3) selection of staining dye and microscopy; 4) recovery of microorganisms added to soil; and 5) mean biovolumes. Sums of bacterial-fungal biomass estimated bimonthly for 14 months were 26-36, 3648, 36-66 and 37-83 mg dry weight/100 g dry soil in a barle~ peanuts field applied with well rotted artificial compost at a rate of 0, 20, 40 and 80 t ha· , respectively. The biovolume-biomass conversion factor used was 0.22. Significant fluctuations of microbial biomass were observed in soil with compost. Bacterial biomass reached a maximum just after compost application in October, followed by a fungal maximum in March. Throughout the year fungal biomass was 1.7-7.1 times higher than bacterial mass. The apparent amounts of nitrogen temporarily trapped in bacterial and fungal biomass (nitrogen in maximum biomass minus that in biomass just before compost application) were calculated as 2.9 and 5.1, 4.4 and 33.5 or 9.7 and 50.9 kg ha· 1 in the plot applied with 20, 40 or 80 t ha-1 of compost, respectively, when nitrogen content of biomass is assumed as 10% of dry matter.

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Fungi associated with roots of continuously cropped upland rice

Cited by 12 publications

References 7 publications

Changes in the abundance and structure of bacterial communities under long-term fertilization treatments in a peanut monocropping system

Changes in the abundance and structure of bacterial communities under long-term fertilization treatments in a peanut monocropping system

Growth inhibition due to continuous cropping of dryland rice and other crops

Direct-Count Estimation of Microbial Biomass in Soil Applied with Compost

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