@thesis{thesis,
		author={ },
		title ={EVALUASI INTENSITAS PENYAKIT KUNING TERHADAP HASIL CABAI
KERITING (Capsicum annuum L. var. Acuminatum) PASCA LETUSAN
GUNUNG MERAPI 2010},
		year={2013},
		url={http://new.etd.repository.ugm.ac.id/home/detail_pencarian/58749},
		abstract={(ABSTRAKSI) Penyakit keriting kuning disebabkan oleh Pepper yellow leaf curl virus
(PYLCV) yang merupakan salah satu virus penting di negara-negara tropis dan sub
tropis. Virus ini disebarkan oleh Bemisia tabaci dan menyebabkan kehilangan hasil
yang besar pada beberapa komoditas pertanian, termasuk cabai keriting. Pasca erupsi
Merapi 2010 dilaporkan bahwa intensitas penyakit keriting kuning pada cabai
keriting mengalami penurunan di daerah endemik penyakit kuning sekitar lereng
Merapi.
Penelitian dilakukan Oktober 2011 - Juni 2012 di lereng bagian barat Merapi,
Magelang, Jawa Tengah. Data intensitas penyakit kuning sebelum erupsi Merapi
2010 diperoleh dari hasil penelitian sebelumnya yang dilakukan pada lokasi dengan
ketinggian yang sama dengan penelitian ini. Rancangan percobaan yang digunakan
adalah CRD Bersarang dengan tiga ulangan dan kondisi tanaman (sakit dan sehat)
tersarang pada ketinggian tempat (550 mdpl, 400 mdpl, dan 250 mdpl). Data
dianalisis dengan Analisis varian (ANOVA) pada tingkat signifikansi 95%, apabila
terdapat beda nyata antar perlakuan dilakukan uji lanjutan dengan menggunakan uji
jarak berganda Duncan. Uji t digunakan untuk membandingkan tanaman yang sehat
dengan sakit kuning dan untuk membandingkan daun bagian pucuk dengan bagian
pangkal dari tanaman yang sakit kuning. Hasil wawancara dianalisis dengan uji chi
square untuk melihat ada atau tidaknya perbedaan budidaya dari semua lokasi.
Hasil penelitian ini menunjukkan bahwa populasi Bemisia tabaci terendah ada
pada ketinggian 550 mdpl dan 250 mdpl. Bila dibanding sebelum erupsi Merapi 2010
intensitas penyakit kuning pada ketinggian 550 mdpl menurun 75,36%, ketinggian
400 mdpl menurun 41,52%, dan ketinggian 250 mdpl menurun 47,8%. Penyakit
kuning pada ketinggian 550 mdpl tidak separah pada ketinggian lainnya. Hasil cabai
tertinggi pada ketinggian 550 mdpl (6,26 ton/ha). Kandungan klorofil, kehijauan
daun, jumlah buah per tanaman, panjang buah, diameter buah, berat buah panen
klimaks dan lama simpan buah di semua lokasi sama. Perbedaan tanaman sakit dan
sehat pada semua variabel pengamatan. Pola tanam, frekuensi penyiraman, dan
frekuensi pengendalian gulma berbeda antar lokasi. (ABSTRACT) Yellow disease caused by pepper yellow leaf curl virus (PYLCV) is one of the
most important virus in tropic and sub tropic countries. This virus was transmitted by
Bemisia tabaci and caused yield losses in pepper. West side mountain Merapi is a
center of pepper plantation areas but all areas are infected by pepper yellow leaf curl
virus for long. Therefore, that areas are identified as endemic areas of Pepper yellow
leaf curl virus. After Merapi Eruption 2010 in that endemic area the farmers reported
that yellow disease intensity on pepper was decline. The aim of research was to
obtain data of yellow disease intensity, Bemisia tabaci population, and yield of
pepper around west side mountain Merapi after eruption in 2010.
The research was conducted in west side mountain Merapi, Magelang, Central
Java from October 2011 - June 2012. The intencity yellow disease data before Merapi
eruption obtained from a previous research conducted at the location with the same
hight as this research. The experimental was Nested in three levels of altitude (550
masl, 400 masl, and 250 masl) and using three blocks. In each altitude its blocks there
are two different plant conditions (symptom and no shown symptom) with three
samples. Data was collected for morphological, sitological, and molekular characters
of pepper plant with yellow disease. Moreover, data of pepper plant management
were collected using quetionaire for 10 farmers for each altitude. All data were
statistically analyzed using the analisys of variance (ANOVA), followed by Duncan
Multiple Range Test (DMRT) to determine the significant differences among
treatment means. T test was be used to compare symptom and no shown symptom
and to compare top and buttom of a leaf parameters. Chi Square was used to
determine the significant differences cultivated among farmers in all locations.
The results showed that altitude 550 masl and 250 masl of lower Bemisia
tabaci population compared to that of in altitude on 400 masl. After Merapi mount
eruption 2010, the yellow disease intencity on 550 masl, 400 masl, and 250 masl
were decreased 75,36 %, 41,52 %, and 47,8 % respectively. The yield on 550 masl
was highest than others (6,26 ton/ha). The difference symptom and no shown
symptom plant was detected on all variables. Cropping pattern, watering frequency,
and weed control frequency were different in all locations.}
		}