dc.contributor.advisor | Muliasari, Ade Astri | |
dc.contributor.author | Ningsih, Wahyu | |
dc.date.accessioned | 2024-08-16T04:02:04Z | |
dc.date.available | 2024-08-16T04:02:04Z | |
dc.date.issued | 2024 | |
dc.identifier.uri | http://repository.ipb.ac.id/handle/123456789/157606 | |
dc.description.abstract | Penyakit bercak daun banyak ditemukan pada fase pembibitan kelapa sawit.
Bercak daun dapat menyebabkan bibit menjadi berawana kuning tembus cahaya
yang dapat dilihat di kedua permukaan daun. B?r??k berkembang m?mb???r dan
menjadi ?g?k lonjong d?ng?n panjang 7-8 mm berwarna c?kl?t dan m?njad? jel??.
P?d? gejala tingkat lanjut b?r??k m?n??b?bk?n nekrosis, beberapa b?r??k
m?n??b?bk?n bentuk b?r??k yang tidak beraturan dan b?b?r??? k??u? b?g??n
tengah b?r??k kering, rapuh, b?rw?rn? k?l?bu atau c?kl?t muda sehingga bibit
menjadi abnormal dan tidak memenuhi persiapan bibit siap salur. Oleh karena itu
diperlukan penanganan untuk mengendalikan penyakit bercak daun yang
disebabkan oleh cendawan Curvularia sp. percobaan dilakukan dengan
menggunakan bahan aktif mancozeb dan klorotalonil pada bibit 8 bulan setelah
transplanting. Perlakuan ini di rancang menggunakan metode perlakuan terdiri dari
bahan aktif mancozeb,klorotalonil dan kombinasi dengan dosis perlakuan tediri dari
25%,50% dan 100%. Berdasarkan hasil pengamatan perlakuan menggunakan
bahan aktif tunggal mancozeb (P1) menunjukkan persentase daya hambat tertinggi
yaitu 57,71%, sedangkan pada perlakuan kombinasi (R1) menunjukkan hasil
persentase terendah terhadap daya hambata pertumbuhan cendawan Curvularia sp.
yaitu 53,29%. Sedangkan hasil interaksi antara pengaruh bahan aktif tunggal dan
kombinasi menunjukkan pada perlakuan P1L3 (mancozeb 100%) memiliki daya
hambat tertinggi yaitu 64,96 %. | |
dc.description.abstract | Leaf spot disease is a common occurrence during the nursery phase of oil
palm cultivation. Leaf spot can result in seedlings exhibiting a translucent yellow
discoloration on both leaf surfaces. Berk develops members and becomes oval with
a length of 7-8 mm, colored coklat, and becomes clear. Advanced symptoms of
bercak may include necrosis, irregular bercak shape, and berberapa kasu. The center
of the bercak is dry, brittle, and covered with a light coat of coklat, which results in
abnormal seedlings that fail to meet the criteria for ready-to-sell seedlings. Thus, a
treatment is required to control the leaf spot disease caused by the fungus Curvularia
sp. To this end, experiments were conducted using the active ingredients mancozeb
and chlorothalonil on seedlings eight months after transplanting. The treatment was
designed using a method comprising active ingredients mancozeb and
chlorothalonil, with doses of 25%, 50%, and 100% applied. The results of the
observations indicated that the treatment utilising a single active ingredient,
mancozeb (P1), demonstrated the highest percentage of inhibition, with a value of
57.71%. Conversely, the combination treatment (R1) exhibited the lowest
percentage of inhibition, with a value of 53.29%, in the growth of the Curvularia
sp. fungus. The results of the interaction between the effect of a single active
ingredient and the combination demonstrated that the P1L3 treatment (100%
mancozeb) exhibited the highest inhibition, reaching 64.96%. | |
dc.description.sponsorship | | |
dc.language.iso | id | |
dc.publisher | IPB University | id |
dc.title | Pengaruh Fungsida Berbahan Aktif Tunggal Mancozeb, Klorotalonil terhadap pertumbuhan Curvularia sp. Secara In Vitro | id |
dc.title.alternative | The Effect of Single Active Ingredient Fungicides Mancozeb and Chlorothalonil on the Growth of Curvularia sp. in Vitro | |
dc.type | Tugas Akhir | |
dc.subject.keyword | pathogens | id |
dc.subject.keyword | leaf spots | id |
dc.subject.keyword | fungi | id |
dc.subject.keyword | isolates | id |