?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ISOLASI+DAN+KARAKTERISASI+BAKTERI+PELARUT+FOSFAT%0D%0ADARI+RHIZOSFER+PISANG+CAVENDISH+(Musa+acuminata+L.)%0D%0ADI+TERBANGGI+BESAR%2C+KABUPATEN+LAMPUNG+TENGAH&rft.creator=JEAN+DELLIANA%2C+PUTRI&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=510+Matematika&rft.description=Pisang+Cavendish+(Musa+acuminata+L.)+merupakan+komoditas+hortikultura+unggul%0D%0Adi+Indonesia+dengan+luas+tanam+yang+terus+meningkat+dari+tahun+2013-2019%2C+tetapi%0D%0Aproduktivitasnya+mengalami+penurunan+karena+menurunnya+kualitas+kesuburan%0D%0Atanah.+Salah+satu+unsur+hara+penting+bagi+tanaman+termasuk+pisang+yaitu+fosfor.%0D%0ASebagian+besar+fosfor+tanah+terdapat+dalam+bentuk+fosfat+yang+terikat+koloid+tanah%0D%0Adan+tidak+larut%2C+sehingga+diperlukan+peran+bakteri+pelarut+fosfat+untuk+melepaskan%0D%0Afosfat+yang+terikat+agar+dapat+diserap+oleh+tanaman.+Penelitian+ini+bertujuan+untuk%0D%0Amengisolasi+dan+mengkarakterisasi+bakteri+pelarut+fosfat+dari+rhizosfer+pisang%0D%0ACavendish+di+Terbanggi+Besar%2C+Kabupaten+Lampung+Tengah+yang+dilakukan+dari%0D%0Abulan+Desember+2023+sampai+Maret+2024+di+Laboratorium+Mikrobiologi%2C+Fakultas%0D%0AMatematika+dan+Ilmu+Pengetahuan+Alam%2C+Universitas+Lampung.+Penelitian%0D%0Adilakukan+menggunakan+metode+eksploratif+dengan+tahapan+pelaksanaan%0D%0Apenelitian+meliputi+pengambilan+sampel+tanah%2C+isolasi+bakteri%2C+perhitungan+jumlah%0D%0Akepadatan+koloni+bakteri%2C+pemurnian+isolat%2C+perhitungan+nilai+indeks+kelarutan%0D%0Afosfat+dan+seleksi+bakteri+potensial%2C+karakterisasi+morfologi+dan+fisiologi%2C+serta+uji%0D%0Apatogenitas.+Hasil+penelitian+menunjukkan+kepadatan+koloni+bakteri+dari+rhizosfer%0D%0Apisang+Cavendish+yaitu+3%2C2+x+103+CFU%2Fg.+Dari+ke-15+koloni+bakteri+yang%0D%0Adiperoleh+menunjukkan+nilai+indeks+kelarutan+fosfat+beragam%2C+yang+berkisar+dari%0D%0A1%2C38-3%2C65.+Seleksi+dari+15+koloni+bakteri+menghasilkan+5+koloni+bakteri+dengan%0D%0Anilai+indeks+kelarutan+fosfat+tertinggi+yaitu+JE1+dengan+nilai+3%2C65%3B+JE2+dengan%0D%0Anilai+3%2C63%3B+JE3+dengan+nilai+3%2C13%3B+JE4+dengan+nilai+3%2C08%3B+dan+JE5+dengan+nilai%0D%0A2%2C94.+Kelima+koloni+memiliki+bentuk+irregular+dengan+tepi+undulate%2C+warna%0D%0Akoloni+didominasi+putih+dengan+elevasi+umbonate%2C+raised%2C+dan+flat.+Kelima+isolat%0D%0Amemiliki+bentuk+sel+short+bacil+dan+sifat+Gram+negatif%2C+kecuali+pada+isolat+JE5%0D%0Adengan+sifat+Gram+positif%3B+tidak+membentuk+spora%3B+mampu+memfermentasi%0D%0Aglukosa%2C+namun+tidak+mampu+memfermentasi+sukrosa+dan+laktosa%3B+menghasilkan%0D%0Aenzim+katalase%3B+dan+tidak+motil.+Hasil+uji+patogenitas+menunjukkan+hanya+isolat%0D%0AJE1+yang+bersifat+non+patogen+terhadap+daun+tembakau.%0D%0AKata+kunci%3A+karakterisasi%2C+bakteri+pelarut+fosfat%2C+rhizosfer%0D%0A%0D%0ACavendish+banana+(Musa+acuminata+L.)+is+a+superior+horticultural+commodity+in%0D%0AIndonesia+with+planting+area+continuing+to+increase+from+2013-2019%2C+but+its%0D%0Aproductivity+has+decreased+due+to+decreasing+quality+of+soil+fertility.+One+of+the%0D%0Aimportant+nutrients+for+plants%2C+including+bananas%2C+is+phosphorus.+Most+of+the+soil%0D%0Aphosphorus+occurs+in+the+form+of+phosphate+which+is+bound+by+soil+colloids+and+is%0D%0Ainsoluble%2C+so+the+role+of+phosphate+solubilizing+bacteria+is+needed+to+release+the%0D%0Abound+phosphate+so+that+the+phosphate+element+can+be+absorbed+by+plants.+This%0D%0Aresearch+aims+to+isolate+and+characterize+phosphate+solubilizing+bacteria+from+the%0D%0Arhizosphere+of+Cavendish+bananas+in+Terbanggi+Besar%2C+Central+Lampung+Regency%0D%0Afrom+December+2023+to+March+2024+at+the+Microbiology+Laboratory%2C+Faculty+of%0D%0AMathematics+and+Natural+Sciences%2C+University+of+Lampung.+The+research+was%0D%0Acarried+out+using+an+exploratory+method+with+research+implementation+stages%0D%0Aincluding+taking+soil+samples%2C+isolating+bacteria%2C+calculating+the+density+of%0D%0Abacterial+colonies%2C+purifying+isolates%2C+calculating+the+phosphate+solubility+index%0D%0Avalue+and+selecting+potential+bacteria%2C+morphological+and+physiological%0D%0Acharacterization%2C+and+pathogenicity+test.+The+results+showed+that+the+density+of%0D%0Abacterial+colonies+from+the+Cavendish+banana+rhizosphere+was+3%2C2+x+103+CFU%2Fg.%0D%0AFrom+15+bacterial+colonies+showed+various+phosphate+solubility+index+values%2C%0D%0Aranging+from+1%2C38-3%2C65.+Selection+of+15+bacterial+colonies+showed+that+5+bacterial%0D%0Acolonies+with+the+highest+phosphate+solubility+index+values%2C+including+JE1+with+a%0D%0Avalue+of+3%2C65%3B+JE2+with+a+value+of+3%2C63%3B+JE3+with+a+value+of+3%2C13%3B+JE4+with+a+value%0D%0Aof+3%2C08%3B+and+JE5+with+a+value+of+2%2C94.+The+five+colonies+have+an+irregular+shape%0D%0Awith+undulate+edges%2C+the+color+of+the+colonies+is+predominantly+white+with%0D%0Aumbonate%2C+raised%2C+and+flat+elevations.+The+five+isolates+had+short+bacillus+cells%0D%0Aand+were+Gram+negative%2C+except+isolate+JE5+which+was+Gram+positive%3B+does+not%0D%0Aform+spores%3B+able+to+ferment+glucose%2C+but+not+able+to+ferment+sucrose+and+lactose%3B%0D%0Aproduces+the+enzyme+catalase%3B+and+not+motile.+The+result+of+the+pathogenicity+test%0D%0Ashowed+that+only+JE1+isolate+was+non-pathogenic+to+tobacco+leaves.%0D%0AKey+words%3A+characterization%2C+phosphate+solubilizing+bacteria%2C+rhizosphere&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2024-07-09&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F83554%2F1%2FABSTRAK_JEAN%2520DELLIANA%2520PUTRI%2520-%2520Jeann%2520Delliana.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F83554%2F2%2FSKRIPSI%2520FULL_JEAN%2520DELLIANA%2520PUTRI%2520-%2520Jeann%2520Delliana.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F83554%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN_JEAN%2520DELLIANA%2520PUTRI%2520-%2520Jeann%2520Delliana.pdf&rft.identifier=++JEAN+DELLIANA%2C+PUTRI++(2024)+ISOLASI+DAN+KARAKTERISASI+BAKTERI+PELARUT+FOSFAT+DARI+RHIZOSFER+PISANG+CAVENDISH+(Musa+acuminata+L.)+DI+TERBANGGI+BESAR%2C+KABUPATEN+LAMPUNG+TENGAH.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F83554%2F