?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ISOLASI+DAN+KARAKTERISASI+BAKTERI+PELARUT+FOSFAT%0D%0ARHIZOSFER+TANAMAN+NANAS+(Ananas+comosus+L.+(Merr)%0D%0A%0D%0ADI+LAMPUNG+TENGAH&rft.creator=Tamara+Shintia%2C+Putri&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=570+Biologi&rft.description=Nanas+(Ananas+comosus+(L.)+Merr.)+merupakan+tanaman+holtikultura+potensial%0D%0Adalam+perdagangan+buah+tropik+dengan+sistem+perakaran+dangkal+sehingga%0D%0Amemerlukan+sistem+drainase+dan+aerase+yang+baik.+Lahan+yang+paling+baik+dalam%0D%0Abudidaya+nanas+cenderung+pada+jenis+tanah+gembur%2C+lempung+berpasir%2C+dan%0D%0Amengandung+banyak+unsur+hara.+Sebagian+besar+bentuk+fosfat+terikat+oleh+koloid%0D%0Atanah%2C+sehingga+menjadi+tidak+tersedia+bagi+tanaman.+Perlu+ditambahkan+pupuk%0D%0Ayang+mengandung+unsur+P+tinggi+walaupun+unsur+P+sudah+tersedia+di+dalam+tanah.%0D%0APenelitian+ini+bertujuan+untuk+menghitung+kepadatan+dan+memperoleh+isolat%0D%0Abakteri+yang+memiliki+karakteristik+sebagai+bakteri+pelarut+fosfat+dari+rhisozfer%0D%0Atanaman+nanas+di+Kabupaten+Lampung+Tengah+yang+dilakukan+pada+bulan%0D%0ADesember+2023-Maret+2024+di+Laboratorium+Mikrobiologi%2C+Fakultas+MIPA%2C%0D%0AUniversitas+Lampung.+Penelitian+menggunakan+metode+deskriptif+eksploratif%0D%0Ayang+meliputi+pengambilan+sampel+tanah%2C+isolasi+bakteri%2C+perhitungan+kepadatan%0D%0Akoloni+bakteri%2C+perhitungan+nilai+indeks+kelarutan+fosfat%2C+permurnian+isolat%2C+serta%0D%0Akarakterisasi+morfologi%2C+mikroskopis%2C+dan+fisiologi.+Hasil+penelitian+menunjukkan%0D%0Apopulasi+koloni+BPF+terpadat+yaitu+4%2C86+x+106+Cfu%2Fgr.+Hasil+inokulasi+dari+19%0D%0Akoloni+memiliki+kemampuan+melarutkan+fosfat+terbaik+ditunjukkan+dengan+nilai%0D%0AIKF+terbesar+yaitu+isolat+TMR1+dan+TMR2+dengan+nilai+2%2C56+dan+2%2C53.+Kelima%0D%0Aisolat+berbentuk+irregular+dengan+elevasi+raised.+Warna+koloni+putih%2C+kuning%2C+dan%0D%0Akrem+dengan+tepi+undulate+dan+lobate.+Kelima+isolat+memiliki+bentuk+sel+basil%2C%0D%0Asifat+Gram+negatif+pada+TMR+1%2C+TMR+2%2C+dan+sifat+Gram+positif+pada+TMR+3%2C%0D%0ATMR4+dan+TMR5%3B+Isolat+TMR3+dan+TMR5+memiliki+spora%3B+mampu%0D%0Amemfermentasi+glukosa+kecuali+TMR5%2C+mampu+memfermentasi+sukrosa+kecuali%0D%0ATMR1%2C+TMR2%2C+dan+TMR5%2C+mampu+memfermentasikan+laktosa+kecuali+TMR1%2C%0D%0ATMR3%2C+dan+TMR4%3B+menghasilkan+enzim+katalase%2C+tidak+motil%2C+bersifat+aerob%0D%0Afakultatif+pada+isolat+TMR1%2C+TMR3+dan+TMR4%2C+dan+bersifat+aerob+pada+TMR+2%0D%0Adan+TMR5.%0D%0AKata+kunci%3A+Nanas%2C+Bakteri+Pelarut+Fosfat%2C+Isolasi%2C+Karakterisasi%2C+Pelarutan+fosfat.%0D%0A%0D%0APineapple+(Ananas+comosus+(L.)+Merr.)+is+a+potential+horticultural+crop+in+the%0D%0Atropical+fruit+trade+with+a+shallow+root+system+so+it+requires+a+good+drainage+and%0D%0Aaerase+system.+The+best+land+for+pineapple+cultivation+tends+to+be+loose%2C+sandy%0D%0Aloam%2C+and+contains+lots+of+nutrients.+Most+forms+of+phosphate+are+bound+by+soil%0D%0Acolloids%2C+making+them+unavailable+to+plants.+It+is+necessary+to+add+fertilizer+that%0D%0Acontains+high+P+elements+even+though+P+elements+are+already+available+in+the+soil.%0D%0AThis+research+aims+to+calculate+the+density+and+obtain+bacterial+isolates+that+have%0D%0Athe+characteristics+of+phosphate+solubilizing+bacteria+from+the+rhizosphere+of%0D%0Apineapple+plants+in+Central+Lampung+Regency+which+was+carried+out+in+December%0D%0A2023-March+2024+at+the+Microbiology+Laboratory%2C+Faculty+of+Mathematics+and%0D%0ANatural+Sciences%2C+University+of+Lampung.+The+research+used+an+exploratory%0D%0Adescriptive+method+which+included+soil+sampling%2C+bacterial+isolation%2C%0D%0Aconcentration+of+bacterial+colony+density%2C+calculation+of+phosphate+solubility%0D%0Aindex+values%2C+purification+of+isolates%2C+as+well+as+morphological%2C+microscopic+and%0D%0Aphysiological+characterization.+The+research+results+showed+that+the+densest%0D%0Acolony+population+was+4.86+x+106+Cfu%2Fgr.+The+inoculation+results+from+19%0D%0Acolonies+had+the+best+ability+to+dissolve+phosphate%2C+shown+by+the+largest+IKF%0D%0Avalues%2C+namely+isolates+TMR1+and+TMR2+with+values+of+2.56+and+2.53.+The+five%0D%0Aisolates+are+irregularly+shaped+with+elevated+elevations.+Colony+colors+are+white%2C%0D%0Ayellow%2C+and+cream+with+wavy+and+lobate+edges.+The+fifth+isolate+had+a+bacillary%0D%0Acell+shape%2C+Gram+negative+characteristics+in+TMR+1%2C+TMR+2%2C+and+Gram+positive%0D%0Acharacteristics+in+TMR+3%2C+TMR4+and+TMR5%3B+Isolates+TMR3+and+TMR5+had%0D%0Aspores%3B+capable+of+fermenting+glucose+except+TMR5%2C+capable+of+fermenting%0D%0Asucrose+except+TMR1%2C+TMR2%2C+and+TMR5%2C+capable+of+fermenting+lactose+except%0D%0ATMR1%2C+TMR3%2C+and+TMR4%3B+produces+the+enzyme+catalase%2C+is+not+motile%2C+is%0D%0Afacultative+aerobic+in+isolates+TMR1%2C+TMR3+and+TMR4%2C+and+is+aerobic+in+TMR+2%0D%0Aand+TMR5.%0D%0AKey+words%3A+Pineapple%2C+Phosphate+Solubilizing+Bacteria%2C+Isolation%2C%0D%0A%0D%0ACharacterization%2C+Phosphate+Dissolution.&rft.publisher=FAKULTAS+MATEMATIK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