RACHMA, AULIA (2025) Pengaruh Penerapan Tanaman Penolak Serai Wangi (Cymbopogon nardus L.) terhadap Populasi Plutella xylostella (L.) (Lepidoptera : Plutellidae) dan Musuh Alaminya pada Budidaya Brokoli Organik. Sarjana thesis, Universitas Brawijaya.
Abstract
Brokoli (Brassica oleracea var. italica) merupakan salah satu sayuran yang populer dan banyak dikonsumsi karena kandungan nutrisinya yang tinggi. Namun, dalam budidayanya, brokoli sering menghadapi berbagai masalah, seperti serangan hama dan penyakit yang dapat mempengaruhi hasil dan kualitas tanaman. Produksi tanaman sayuran brokoli Provinsi Jawa Tengah dari tahun 2021 hingga 2023 mengalami penurunan dari 39.359 ton menjadi 32.629 ton (Data BPS, 2024). Sehingga rata-rata penurunan hasil panen per tahun adalah 3.365 ton. Salah satu metode yang dapat diterapkan dalam pertanian organik adalah penggunaan tanaman pendamping yang berfungsi sebagai tanaman penolak alami bagi hama penelitian ini bertujuan untuk mengetahui efektivitas serai wangi dalam mengendalikan hama brokoli serta dampaknya terhadap pertumbuhan dan hasil tanaman brokoli dalam sistem pertanian organik.) Penelitian ini dilaksanakan di lahan P4S Citra Muda, Semarang, Jawa Tengah mulai bulan September hingga November 2024. Penelitian dilakukan dengan menggunakan metode rancangan acak kelompok dengan empat perlakuan yaitu monokultur brokoli organik, brokoli dan serai wangi pola tanam mengelilingi petak, brokoli dan serai wangi pola tanam tengah petak, serta brokoli dan pendamping serai wangi pola tanam diagonal petak. Masing-masing perlakuan diulang sebanyak enam kali. Data yang diperoleh dianalisis dengan sidik ragam ANOVA dengan taraf uji 5%. Jika hasil analisis sidik ragam menunjukkan perlakuan berbeda nyata maka dilanjutkan dengan uji Duncan Multiple Range Test (DMRT) taraf uji 5%. Berdasarkan hasil penelitian dapat disimpulkan bahwa perlakuan sistem tanam brokoli dengan berbagai pola tanam serai wangi tidak berpengaruh nyata terhadap populasi dan intensitas kerusakan yang disebabkan oleh P. xylostella. Rata-rata populasi larva P. xylostella pada masing-masing perlakuan tergolong sedang yaitu antara 2,73 – 4,01 individu/tanaman. Rata-rata intensitas kerusakan yang disebabkan P. xylostella pada masing-masing perlakuan juga tergolong sedang yaitu antara 30,54 – 34,5 %. Populasi musuh alami pada tiap perlakuan menunjukkan hasil yang cukup rendah yaitu antara 0,5 – 1,72 ekor/tanaman. Rerata hasil produksi tidak berbeda nyata antar setiap perlakuan dengan rerata 112,48 – 138,1 g/tanaman.
English Abstract
Broccoli (Brassica oleracea var. italica) is one of the most popular and widely consumed vegetables due to its high nutritional content. However, in its cultivation, broccoli often faces various problems, such as pest and disease attacks that can affect crop yield and quality. The production of broccoli vegetable crops in Central Java Province from 2021 to 2023 has decreased from 39,359 tons to 32,629 tons (BPS data, 2024). So that the average decrease in yield per year is 3,365 tons. One method that can be applied in organic farming is the use of companion plants that function as natural repellent plants for pests. This research aims to determine the effectiveness of citronella in controlling broccoli pests and their impact on the growth and yield of broccoli plants in an organic farming system). This research was conducted at P4S Citra Muda, Semarang, Central Java from September to November 2024. The research was conducted using a randomized block design method with four treatments, namely organic broccoli monoculture, broccoli and citronella companion plants in a planting pattern around the plot, broccoli and citronella companion plants in the middle of the plot, and broccoli and citronella companion plants in a diagonal planting pattern. Each treatment was repeated six times. The data obtained were analyzed by ANOVA variance analysis with a 5% test level. If the results of the analysis of variance showed significantly different treatments, it was continued with the Duncan Multiple Range Test (DMRT) test at the 5% test level. Based on the results of the study, it can be concluded that the treatment of broccoli planting system with various planting patterns of citronella companion plants did not significantly affect the population and intensity of damage caused by P. xylostella. The average population of P. xylostella larvae in each treatment was classified as moderate, between 2.73 - 4.01 individuals/plant. The average intensity of damage caused by P. xylostella in each treatment was also classified as medium, between 30.54 - 34.5%. The population of natural enemies in each treatment showed quite low results between 0.5 - 1.72 individuals/plant. The average production yield was not significantly different between each treatment with an average of 112.48 - 138.1 g/plant.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 052504 |
| Divisions: | Fakultas Pertanian > Hama dan Penyakit Tanaman |
| Depositing User: | Annisti Nurul F |
| Date Deposited: | 14 Jan 2025 03:33 |
| Last Modified: | 14 Jan 2025 03:33 |
| URI: | http://repository.ub.ac.id/id/eprint/234778 |
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