Electronic Theses and Dissertation

Tanaman selada merupakan tanaman yang terpengaruh akibat adanya perubahan iklim. Dampak buruk pada tanaman tersebut dapat diminimalisir menggunakan biochar sebagai mitigasi iklim mikro sekitar tanaman. Penelitian ini bertujuan untuk mengetahui pengaruh biochar dan pupuk terhadap iklim mikro pada tanaman selada merah. Penelitian ini dilaksanakan di Biochar Research Station Pusat Riset Biochar dan Hutan Tropis Lestari Universitas Syiah Kuala dengan ketinggian 3,82 mdpl 5° 34' 5,02" LU, 95° 22' 36,19" BT dan di Gampong Pineung Kota Banda Aceh dari bulan Mei - Agustus 2024. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) non Faktorial 9 perlakuan dan 3 ulangan, terdapat 27 satuan percobaan yang terdiri dari 4 tanaman sehingga terdapat 108 tanaman. Parameter pengamatan penelitian ini yaitu suhu tanah 0 cm, suhu tanah 10 cm dan kelembaban tanah 10 cm, dilengkapi data pendukung yaitu suhu udara, kelembaban udara, intensitas cahaya matahari, curah hujan, pH tanah. Hasil penelitian ini menunjukkan perlakuan biochar berpengaruh nyata terhadap suhu tanah 0 cm pada 3 MST, berpengaruh sangat nyata terhadap suhu tanah 10 cm pada 2 MST dan 5 MST, berpengaruh nyata terhadap kelembaban tanah 4 MST dan 5 MST, berpengaruh sangat nyata terhadap pH tanah 10 cm pada 5 MST. Jenis biochar limbah kayu embedded 10 ton ha-1 rata-rata menunjukkan pengaruh yang lebih baik untuk iklim mikro tanah. Biochar limbah kayu embedded 10 ton ha-1 mampu memperbaiki pH tanah setiap minggunya meskipun belum mencapai pH optimal dari tanaman selada merah. Penambahan biochar ke dalam tanah mampu memperbaiki iklim mikro tanah meskipun kondisi udara yang didapatkan tidak sesuai dengan kebutuhan selada merah.

Lettuce plants are plants that are affected by climate change. The adverse effects on these plants can be minimized by using biochar as a microclimate mitigation measure around the plants. This study aims to determine the effect of biochar and fertilizer on the microclimate of red lettuce plants. This study was conducted at the Biochar Research Station, Center for Biochar and Tropical Forest Research Lestari, Syiah Kuala University, at an elevation of 3,82 m above sea level (5° 34' 5.02“ N, 95° 22' 36.19” E) and in Gampong Pineung, Banda Aceh City, from May to August 2024. This study used a non-factorial Randomized Block Design (RBD) with 9 treatments and 3 replications, resulting in 27 experimental units comprising 4 plants each, totaling 108 plants. The observation parameters of this study were soil temperature at 0 cm, soil temperature at 10 cm, and soil moisture at 10 cm, supplemented by supporting data including air temperature, air humidity, sunlight intensity, rainfall, and soil pH. The results of this study indicate that the biochar treatment has a significant effect on soil temperature at 0 cm at 3 MST, had a very significant effect on soil temperature at 10 cm at 2 MST and 5 MST, had a significant effect on soil moisture at 4 MST and 5 MST, and had a very significant effect on soil pH at 10 cm at 5 MST. The type of wood waste biochar embedded at 10 tons ha-1 showed an average better effect on soil microclimate. Wood waste biochar embedded at 10 tons ha-1 can improve soil pH weekly, although it has not yet reached the optimal pH for red lettuce. Adding biochar to the soil can improve soil microclimate even when air conditions do not meet the needs of red lettuce.