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      Aplikasi Limbah Ekstraksi Bromelin dan Bambu Cacah untuk Perbaikan Sifat Kimia Tanah dan Pertumbuhan VegetatifNanas pada Ultisol Lampung Tengah

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      Date
      2023-06-21
      Author
      Jauhari, Listyanada Shafiyah Amirah
      Sudadi, Untung
      Indriyati, Lilik Tri
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      Abstract
      Pengelolaan secara intensif, terus-menerus, dan dalam jangka waktu lama pada lahan perkebunan nanas (Ananas comosus L. Merr) PT. Great Giant Pineapple, Lampung Tengah telah menyebabkan degradasi kesuburan tanah. Ameliorasi menggunakan berbagai jenis limbah organik telah dilakukan, namun kadar bahan organik tanah belum meningkat secara signifikan karena waktu dekomposisi atau residence time bahan amelioran yang diberikan lebih cepat daripada umur pertanaman nanas. Penelitian ini bertujuan mengevaluasi pengaruh dan menentukan dosis rekomendasi aplikasi limbah ekstraksi bromelin atau bambu cacah terhadap perbaikan sifat kimia tanah dan pertumbuhan vegetatif nanas pada umur tanaman 13 bulan setelah tanam (BST). Penelitian ini merupakan lanjutan dari penelitian sebelumnya dengan peubah pengamatan yang sama tetapi dilakukan pada umur tanaman 6 BST (Azhar 2023). Percobaan dilakukan dengan Rancangan Acak Kelompok (RAK) satu faktor 10 perlakuan, yaitu aplikasi limbah ekstraksi bromelin (LEB) atau bambu cacah masing-masing dengan dosis 0, 20, 40, 60, dan 80 ton ha-1 dengan 4 ulangan. Hasil penelitian menunjukkan aplikasi 20 ton ha-1 LEB efektif menurunkan kejenuhan Al, Al-dd dan H-dd, 40 ton ha-1 secara nyata menghasilkan pertumbuhan vegetatif tanaman tertinggi, dan 80 ton ha-1 efektif meningkatkan pH, Ca-dd dan Mg-dd, sedangkan peningkatan tertinggi kadar C-organik dan N-total tanah diperoleh dari aplikasi 80 ton ha-1 bambu cacah.
       
      Intensive land management practiced continuously for a long-term in the pineapple (Ananas comosus L. Merr.) plantation of PT. Great Giant Pineapple, Central Lampung has caused soil fertility degradation. Amelioration using diverse organic wastes has been done, but soil organic matter content has not been improved significantly because residence time of the ameliorant was faster than the pineapple growing age. This study aimed to evaluate the effects of and determine the recommended dose of bromelain extraction waste or chopped bamboo application on soil chemical properties and pineapple vegetative growth at 13 Month After Plant (MAP). This research was a continuation of the previous one with the same observational variables but conducted at 6 MAP (Azhar 2023). The experiment applied an RBD 1 factor with 10 treatments, namely bromelain extraction waste (BEW) or chopped bamboo application of respectively 0, 20, 40, 60, and 80 ton ha-1 with 4 replications. Application of BEW at 20 ton ha-1 significantly decreased soil Al-saturation, exch.Al, and exch.H; 40 ton ha-1 resulted in the highest crop vegetative growth; and 80 ton ha-1 increased soil pH, exch.Ca, and exch.Mg. The highest increase in soil organic-C and total N were obtained at 80 ton ha-1 chopped bamboo application.
       
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      http://repository.ipb.ac.id/handle/123456789/119776
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      • UT - Soil Science and Land Resources [2825]

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