Subakti, Harun Dwi and Karuniawan Puji Wicaksono,, SP., MP., Ph.D. (2022) Analisis Pertumbuhan Gulma Invasif Kirinyuh (Chromolaena Odorata L. R. M. King) Pada Intensitas Naungan Berbeda. Sarjana thesis, Universitas Brawijaya.
Abstract
Tumbuhan invasif adalah semua jenis tumbuhan yang telah menyebar ke dalam suatu komunitas dan menyebabkan gangguan terhadap jenis tumbuhan lain. Tumbuhan invasif memiliki adaptasi yang baik di habitat baru, sehingga dapat mempertahankan populasinya dengan baik dan menyebabkan kerusakan lingkungan. Studi mengenai spesies yang diintroduksi atau spesies yang berasal dari luar belum banyak dilakukan di Indonesia. Studi mengenai pengaruh lingkungan terhadap salah satu jenis asing invasif paling berbahaya yaitu Chromolaena odorata pun masih minim sehingga diperlukan adanya penelitian terkait hal tersebut. Penelitian ini dilaksanakan di lahan percobaan Jatimulyo, Lowokwaru, Kota Malang. Mulai dari bulan Februari 2022 hingga Mei 2022. Alat yang digunakan meliputi Leaf Area Meter, Kayu Penyangga, Paranet 50%, 70%, dan 90%, Gembor, Penggaris, Meteran, Lux meter, thermohigrometer, kabel ties dan Label. Sedangkan, bahan yang digunakan meliputi benih kirinyuh dan air. Penelitian Analisis Pertumbuhan Gulma Invasif Kirinyuh (Chromolaena odorata L.R.M. King) pada intensitas naungan berbeda dilakukan dengan menggunakan Rancangan Acak Kelompok 1 faktor, yaitu intensitas naungan. Taraf naungan meliputi tanpa naungan (0% naungan), naungan 50%, naungan 70%, dan naungan 90%. Diulang sebanyak 6 kali, sehingga total unit percobaan sebanyak 24 unit. Setiap unit percobaan terdiri dari 20 populasi kirinyuh sehingga total kirinyuh pada penelitian sebanyak 480 tanaman. Metode pengambilan sampel berupa metode destruktif. Variabel yang diamati meliputi Tinggi tanaman, jumlah daun, luas daun per tanaman, bobot kering daun, bobot kering bagian tajuk dan bobot kering bagian akar, bobot kering tanaman, nisbah berat daun, luas daun spesifik, nisbah luas daun, laju asimilasi bersih, laju pertumbuhan relatif, indeks klorofil, suhu dan kelembaban nisbi. Analisis Ragam menggunakan ANOVA dengan F tabel 5%. Uji lanjut menggunakan Beda Nyata Terkecil (BNT) pada taraf 5%. Uji korelasi dan regresi dilakukan untuk melihat hubungan antar dua variabel dan menilai seberapa besar tingkat pengaruhnya. Naungan menurunkan pertumbuhan kirinyuh (Chromolaena odorata). Hasil penelitian menunjukkan bahwa peningkatan taraf naungan meningkatkan nilai rerata tinggi tanaman, luas daun, luas daun spesifik, dan nisbah luas daun. Disisi lain, menurunkan nilai rerata jumlah daun, bobot kering daun, bobot kering akar, bobot kering tanaman, bobot kering tajuk, laju asimilasi bersih dan laju pertumbuhan relatif. Kemudian, hasil analisis korelasi dan regresi menunjukkan bahwa intensitas cahaya dan suhu berkorelasi kuat dan positif terhadap laju pertumbuhan relatif kirinyuh, sementara itu kelembaban nisbi berkorelasi kuat namun negatif. Berdasarkan hasil penelitian dapat disimpulkan bahwa: • Taraf naungan 90% (S4) menunjukkan nilai terendah dalam beberapa variabel pengamatan pertumbuhan. ii • Peningkatan Intensitas naungan dan kelembaban nisbi menurunkan pertumbuhan kirinyuh, sementara itu peningkatan suhu dan intensitas cahaya meningkatkan pertumbuhan kirinyuh (Chromolaena odorata). • Naungan dapat dijadikan sebagai salah satu pertimbangan dalam perencanaan untuk menekan pertumbuhan gulma invasif kirinyuh (Chromolaena odorata
English Abstract
Invasive plants are all types of plants that have spread into a community and cause disturbance to other plant species. Invasive plants have good adaptations in new habitats, so they can maintain their populations well and cause environmental damage. Studies on introduced species or species originating from outside have not been widely carried out in Indonesia. Studies on the effect of the environment on one of the most dangerous invasive alien species, namely Chromolaena odorata, are still minimum. This research was conducted in the experimental field Jatimulyo, Lowokwaru, Malang City. Starting from December 2021 to March 2022. The tools used include Leaf Area Meter, Support Wood, Paranet 50%, 70%, and 90%, Gembor, Ruler, Meter, Label. Meanwhile, the materials used include kirinyuh seeds and water. The study Growth Analysis of invasive weeds Chromolaena odorata in various shades was carried out using a randomized block design of 1 factor, namely the level of shade. Shade levels include no shade (0% shade), 50% shade, 70% shade, and 90% shade. It was repeated 6 times, so the total experimental units were 24 units. Each experimental unit consisted of 20 kirinyuh populations so that the total kirinyuh in the study were 480 plants. Sampling methods are destructive methods. Variable observed include plant height, number of leaves, leaf area per plant, leaf dry weight, shoot dry weight, root dry weight, plant dry weight, specific leaf area, leaf weight ratio, leaf area ratio, net assimilation rate, relative growth rate, chlorophyll index, temperature and relative humidity. Analysis of Variety using ANOVA with F table 5%. The further test used the Least Significant Difference (BNT) at the 5% level. Regression and correlation analysis used to measure relationship between environmental parameter with relatif growth rate. Shade decreased the growth of kirinyuh (Chromolaena odorata). The results showed that increasing shade level increased the mean value of plant height, leaf area, specific leaf area, and leaf area ratio. On the other hand, it decreased the mean number of leaves, leaf dry weight, root dry weight, plant dry weight, canopy dry weight, net assimilation rate and relative growth rate. Then, the results of correlation and regression analysis showed that light intensity and temperature were strongly and positively correlated with relative growth rate, while relative humidity had a strong but negative correlation. Based on the results of the study it can be concluded that: • Shade level of 90% (S4) shows the lowest value in several growth observation variables. • Increasing shade intensity and relative humidity decreased the growth of kirinyuh, meanwhile increasing temperature and light intensity increased the growth of kirinyuh (Chromolaena odorata). • Shade can be used as one of the considerations in planning to suppress the growth of invasive kirinyuh weed (Chromolaena odorata)
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522040223 |
| Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture > 338.16 Production efficiency |
| Divisions: | Fakultas Pertanian > Agroekoteknologi |
| Depositing User: | Nur Cholis |
| Date Deposited: | 18 Nov 2022 07:44 |
| Last Modified: | 18 Nov 2022 07:44 |
| URI: | http://repository.ub.ac.id/id/eprint/196404 |
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