Electronic Theses and Dissertation

Tomat (Solanum lycopersicum L.) termasuk ke dalam jenis tanaman hortikultura yang memiliki nilai ekonomi dan gizi yang tinggi. Permasalahan yang sering dijumpai pada tanaman tomat adalah serangan penyakit, salah satunya bercak kering yang diakibatkan oleh patogen Alternaria solani. Upaya yang dilakukan untuk mengatasi permasalahan tersebut adalah dengan pemberian campuran bahan aktif fungisida. Tujuan dari penelitian ini untuk mengetahui pengaruh pemberian campuran bahan aktif fungisida terhadap serangan Alternaria solani dan hasil tanaman tomat.
Penelitian ini dilaksanakan di Learning Development & Centers Syngenta, Desa Panyalaian, Kecamatan Sepuluh Koto, Kabupaten Tanah Datar, Sumatera Barat. Penelitian berlangsung pada bulan September 2023 sampai dengan Juni 2024. Bahan yang digunakan dalam penelitian ini adalah tomat Natavi F1, fungisida yang berbahan aktif Oxathiapiprolin 30 g/L dan Famoxadon 300 g/L, Oxathiapiprolin 155 g/L dan Azoxystrobin 15 g/L, serta Oxathiapiprolin 400 g/L dan chlorothalonil 6 g/L. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola non faktorial dengan 4 perlakuan yang diulang sebanyak 4 kali. Jumlah sampel yang diamati adalah 4 tanaman dalam satu ulangan, sehingga total sampel yang diamati 64 tanaman. Data hasil pengamatan dianalisis dengan ANOVA. Apabila hasil analisis berpengaruh nyata, maka dilanjutkan dengan Uji Duncan New Multiple Range Test pada taraf 5%.
Hasil penelitian menunjukkan campuran bahan aktif fungisida berpengaruh sangat nyata terhadap tinggi tanaman umur 49 dan 56 HST, insidensi penyakit, intensitas penyakit, jumlah buah pertanaman, dan bobot buah pertanaman, berpengaruh nyata terhadap tinggi tanaman umur 42 HST serta berpengaruh tidak nyata terhadap tinggi tanaman umur 35 HST dan masa inkubasi. Campuran fungisida terbaik terdapat pada perlakuan 4 ml/L (Oxathiapiprolin+Chlorothalonil) menunjukkan pengaruh lebih baik terhadap tinggi tanaman umur 42, 49, dan 56 HST, insidensi penyakit, intensitas penyakit, nilai efikasi, jumlah buah pertanaman, dan bobot buah pertanaman.

Tomato (Solanum lycopersicum L.) is a horticultural crop that has high economic and nutritional value. Problems that are often encountered in tomato plants are disease attacks, one of which is dry spot caused by the pathogen Alternaria solani. Efforts made to overcome these problems are by applying a mixture of fungicide active ingredients. The purpose of this study was to determine the effect of a mixture of fungicide active ingredients on Alternaria solani attack and tomato plant yield. This research was conducted at Syngenta Learning Development & Centers, Panyalaian Village, Ten Koto District, Tanah Datar Regency, West Sumatra. The research took place from September 2023 to June 2024. The materials used in this study were Natavi F1 tomatoes, fungicides made from Oxathiapiprolin 30 g/L and Famoxadon 300 g/L, Oxathiapiprolin 155 g/L and Azoxystrobin 15 g/L, and Oxathiapiprolin 400 g/L and chlorothalonil 6 g/L. This study used a non-factorial pattern Randomized Group Design (RAK) with 4 treatments repeated 4 times. The number of samples observed was 4 plants in one replication, so the total samples observed were 64 plants. Observation data were analyzed with ANOVA. If the results of the analysis have a significant effect, it is continued with the Duncan New Multiple Range Test at the 5% level. The results showed that the mixture of fungicide active ingredients had a very significant effect on plant height at 49 and 56 DAP, disease incidence, disease intensity, number of fruits per plant, and fruit weight per plant, significantly affected plant height at 42 DAP and had no significant effect on plant height at 35 HST and incubation period. The best fungicide mixture was found in the 4 ml/L treatment (Oxathiapiprolin + Chlorothalonil) which showed a better effect on plant height at 42, 49, and 56 DAP, disease incidence, disease intensity, efficacy value, number of fruits per plant, and fruit weight per plant. Translated with DeepL.com (free version)