?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=UJI+EFEKTIVITAS+EKSTRAK+ETANOL+TANAMAN+SEREH+WANGI%0D%0A(Cymbopogon+nardus+L.)+TERHADAP+KUTU+PUTIH+(Planococcus+citri)+PADA%0D%0A%0D%0ATANAMAN+KOPI+ROBUSTA+(Coffea+robusta+L.)&rft.creator=Aliya%2C++Az+Zahra%09&rft.subject=570+Biologi&rft.description=Penurunan+kualitas+kopi+salah+satunya+disebabkan+oleh+serangan+Organisme%0D%0APenggangu+Tanaman+(OPT)%2C+seperti+hama+kutu+putih+(Planococcus+citri).+Salah+satu%0D%0Aalternatif+untuk+mengatasinya+yaitu+dengan+penggunaan+insektisida+nabati+yang%0D%0Aterbuat+dari+tanaman+sereh+wangi+(Cymbopogon+nardus+L.).+Penelitian+ini+bertujuan%0D%0Auntuk+mengetahui+kandungan+fitokimia+ekstrak+sereh+wangi%2C+mengetahui+efektivitas%0D%0Aekstrak+etanol+tanaman+sereh+wangi+terhadap+jumlah+kematian+kutu+putih+dan+melihat%0D%0Aperubahan+morfologi+kutu+putih+yang+mati+akibat+ekstrak+tersebut.+Desain+penelitian%0D%0Aini+adalah+Rancangan+Acak+Kelompok+(RAK)+dua+faktorial+yaitu+konsentrasi+ekstrak%0D%0Aetanol+tanaman+sereh+wangi+(0%25+sebagai+kontrol%2C+5%25%2C+10%25%2C+15%25%2C+20%25%2C+dan+25%25)+dan%0D%0Awaktu+kematian+kutu+putih+(12%2C+24%2C+48%2C+dan+72+jam)+sebanyak+3+kali+pengulangan.%0D%0AData+jumlah+kematian+kutu+putih+dianalisis+menggunakan+analisis+probit+untuk%0D%0Amenentukan+nilai+LC50%2C+data+hasil+kematian+kutu+putih+dianalisis+menggunakan%0D%0AANOVA+apabila+hasil+yang+diperoleh+berbeda+signifikan+maka+dilanjut+dengan+uji%0D%0ATukey+untuk+mengetahui+perbedaan+antar+konsentrasi+dan+waktu+pengamatan.%0D%0AAdapun+pengamatan+perubahan+morfologi+pada+kutu+putih+setelah+perlakuan%0D%0Adianalisis+secara+deskriptif.+Hasil+uji+fitokimia+tanaman+sereh+wangi+mengandung%0D%0Asenyawa+tanin%2C+alkaloid%2C+flavonoid%2C+fenolik%2C+dan+terpenoid.+Hasil+analisis+probit%0D%0Akonsentrasi+yang+paling+efektif+terhadap+jumlah+kematian+kutu+putih+adalah+ekstrak%0D%0Aetanol+tanaman+sereh+wangi+konsentrasi+25%25+pada+waktu+12+jam+pengamatan%2C+dengan%0D%0Anilai+LC50+20%2C2%25.+Berdasarkan+hasil+uji+tukey+konsentrasi+yang+paling+banyak%0D%0Amenyebabkan+kematian+kutu+putih+adalah+konsentrasi+25%25+dengan+jumlah+kematian%0D%0Alebih+dari+50%25+pada+12+jam+pengamatan.+Hasil+pengamatan+terhadap+perubahan%0D%0Amorfologi+kutu+putih+yang+mati+setelah+paparan+ekstrak+etanol+tanaman+sereh+wangi%0D%0Amenunjukkan+tubuh+yang+kaku+dan+mengkerut%2C+perubahan+warna+menjadi+kekuningan%0D%0Aserta+terjadi+kerusakan+pada+antena.%0D%0AKata+kunci%3A+Insektisida+nabati%2C+Kopi%2C+Planococcus+citri%2C+Sereh+wangi.%0D%0AThe+decline+in+coffee+quality+is+partly+due+to+the+attack+of+Plant+Pests+and+Diseases%0D%0A(PPD)%2C+such+as+mealybug+(Planococcus+citri).+One+alternative+to+address+this+issue+is%0D%0Athe+use+of+botanical+insecticides+made+from+citronella+(Cymbopogon+nardus+L.).+This%0D%0Astudy+aims+to+determine+the+phytochemical+content+of+citronella+extract%2C+evaluate+the%0D%0Aeffectiveness+of+ethanol+extract+from+citronella+on+the+mortality+rate+of+mealybug%2C+and%0D%0Aobserve+the+morphological+changes+in+mealybug+killed+by+the+extract.+The+research%0D%0Adesign+used+was+a+two-factorial+Randomized+Block+Design+(RBD)%2C+with+factors+being%0D%0Athe+concentration+of+ethanol+extract+from+citronella+(0%25+as+control%2C+5%25%2C+10%25%2C+15%25%2C%0D%0A20%25%2C+and+25%25)+and+the+duration+of+mealybug+mortality+observation+(12%2C+24%2C+48%2C+and%0D%0A72+hours)+with+three+repetitions.+The+mortality+data+of+mealybug+were+analyzed+using%0D%0Aprobit+analysis+to+determine+the+LC50+value%2C+and+the+data+were+further+analyzed+using%0D%0AANOVA.+If+significant+differences+were+found%2C+Tukey%E2%80%99s+test+was+conducted+to%0D%0Adetermine+differences+among+concentrations+and+observation+times.+Morphological%0D%0Achanges+in+mealybug+after+treatment+were+analyzed+descriptively.+Phytochemical%0D%0Atesting+of+citronella+revealed+the+presence+of+tannins%2C+alkaloids%2C+flavonoids%2C+phenolics%2C%0D%0Aand+terpenoids.+Probit+analysis+showed+that+the+most+effective+concentration+for%0D%0Amealybug+mortality+was+25%25+ethanol+extract+at+12+hours+of+observation%2C+with+an+LC50%0D%0Avalue+of+20.2%25.+Tukey's+test+results+indicated+that+the+25%25+concentration+caused+the%0D%0Ahighest+mortality+rate%2C+with+over+50%25+mortality+observed+at+12+hours.+Observations+of%0D%0Amorphological+changes+in+mealybug+exposed+to+the+ethanol+extract+of+citronella%0D%0Arevealed+stiffened+and+shriveled+bodies%2C+yellowish+discoloration%2C+and+damage+to%0D%0Aantennae.%0D%0A%0D%0AKeywords%3A+Botanical+insecticide%2C+Citronella%2C+Coffee%2C+Planococcus+citri.&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM+&rft.date=2024-08-29&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F81982%2F1%2FAbstrak%2520digilib%2520-%2520Aliya%2520Az-Zahra.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F81982%2F2%2FSkripsi%2520full_%2520Aliya%2520Az%2520Zahra%2520-%2520Aliya%2520Az-Zahra.pdf&rft.format=text&rft.identifier=http%3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