organic fertilizer. Application of a PGPR strain significantly
increased the total soluble solids and total sugars in bananas during
a previous study[37]. Akca and Ercisli (2010) also demonstrated
that PGPR strains imparted positive effects on fruit quality of sweet
cherry[38].
Based on characteristics of different composts, the soil amended
with BIO improved the value of pH, EC, and TON and NH
þ
4 N
contents but reduced the TOC content and C/N ratio. We also
compared the microbial populations of culturable bacteria, fungi,
actinomycetes and FO. Different compost applications contained
different culturable microbial populations as revealed by the plate
count methods. Several reports suggest that culturable bacteria are
important to soil ecosystem functions because of their higher total
biomass and metabolic activity[39]. Enzymatic and microbiological
parameters, rather than chemical ones, have been identified as
more informative for predicting suppressiveness, including microbial biomass and total culturable bacteria. Various populations
of soil total bacteria, fungi and actinomycetes have also been used
as indicators of soil health[6]. Optimum microbial community
structure should stimulate crop yields and promote a soil defense
capability[40]. The results of this study are similar to a previous
report that the populations of bacteria and actinomycetes in the
bulk soil amended with BIO dramatically increased, while the total
fungal and fusarium populations were markedly lower compared to
other treatments, and the fusarium wilt disease was suppressed
[14]. The improvement of soil microflora may be related to the
PGPR strain (Bacillusspp.) inoculated into the compost[41]. Our
results indicated that the improvement of the culturable soil bacteria and actinomycetes populations and the decline of the
fungi population after BIO application could lead to a gr
organic fertilizer. Application of a PGPR strain significantlyincreased the total soluble solids and total sugars in bananas duringa previous study[37]. Akca and Ercisli (2010) also demonstratedthat PGPR strains imparted positive effects on fruit quality of sweetcherry[38].Based on characteristics of different composts, the soil amendedwith BIO improved the value of pH, EC, and TON and NHþ4 Ncontents but reduced the TOC content and C/N ratio. We alsocompared the microbial populations of culturable bacteria, fungi,actinomycetes and FO. Different compost applications containeddifferent culturable microbial populations as revealed by the platecount methods. Several reports suggest that culturable bacteria areimportant to soil ecosystem functions because of their higher totalbiomass and metabolic activity[39]. Enzymatic and microbiologicalparameters, rather than chemical ones, have been identified asmore informative for predicting suppressiveness, including microbial biomass and total culturable bacteria. Various populationsof soil total bacteria, fungi and actinomycetes have also been usedas indicators of soil health[6]. Optimum microbial communitystructure should stimulate crop yields and promote a soil defensecapability[40]. The results of this study are similar to a previousreport that the populations of bacteria and actinomycetes in thebulk soil amended with BIO dramatically increased, while the totalfungal and fusarium populations were markedly lower compared toother treatments, and the fusarium wilt disease was suppressed[14]. The improvement of soil microflora may be related to thePGPR strain (Bacillusspp.) inoculated into the compost[41]. Ourresults indicated that the improvement of the culturable soil bacteria and actinomycetes populations and the decline of thefungi population after BIO application could lead to a gr
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