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All Journal Agrin : Jurnal Penelitian Pertanian Tropical Plantation Journal Jurnal Wana Tropika
Wijayani, Suprih
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Agriculture, Biological Sciences & Forestry

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Indeks Nilai Penting dan Keanekaragaman Komunitas Vegetasi Penyusun Hutan di Alas Burno SUBKPH Lumajang Rawana; Wijayani, Suprih; Masrur, Muhammad Aqib
Jurnal Wana Tropika Vol 12 No 2 (2022): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v12i02.215

Abstract

The importance value index and diversity are important indicators to determine the dynamics and stability of the vegetation community. The objectives of the study were (1) to determine the importance value index of seedlings, saplings, poles and trees composing the Bruno Forest community in SUBKPH Lumajang (2) to know the diversity of seedlings, saplings, poles and trees composing the Bruno Forest community in SUBKPH Lumajang. The research was conducted in the Bruno Forest Area, SUBKPH Lumajang, East Java. The plot method was used in this study with nested plots measuring 2x2m2 for seedlings, 5x5m2 for saplings, 10x10m2 for poles, and 20x20m2 for trees. The number of samples was 30 plots placed systematically, with a distance between plots of 20m. The conclusions of this study are (1) the forest vegetation community of Bruno Forest area is composed of 9 species belonging to 6 families, at tree level dominated by Pinus merkusii, at pole level by Swietenia macrophylla species, saplings and seedling level dominated by Calliandra surinamensis (2) Diversity at tree and pole level was categorized as high while at sapling and seedling level was categorized as moderate. The species evenness index at the tree, pole and saplling level was categorized as high, while at the seedling level it was categorized as medium.
The Utilization Of Co-Product as Organic Mulch to Improve Nutrient Use Efficiency and Growth of Palm Oil Seedlings in The Main Nursery Wijayani, Suprih; Kritalisasi, Elizabeth Nanik
Tropical Plantation Journal Vol 4, No 2 (2025): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v4i2.58

Abstract

Replanting is a strategic effort to increase the productivity of oil palm plantations. This effort requires the procurement of quality seedlings, so that maintenance absolutely gets the main attention. This study aims to determine the benefits of co-products to increase nutrient use efficiency (NUE) and the growth of oil palm seedlings in the main nursery. This study used a completely randomized block design with treatments of oil palm co-products (empty bunches, mesocarp fiber, suspended solids applied as mulch on the surface of polybag media, and without co-products) and NPKMg (15:15:6:4) at the rate of 8, 10 and 12 grams/two weekly/seedlings. The treatment  applied at transplanting seedlings from PN to MN until the age of 8 months. The results showed that the growth of oil palm seedlings and NUEwere influenced by the types of co-products and NPKMg rates. Application of oil palm co-products (empty bunches, mesocarp fibers and suspended solids) as surface mulch and NPKMg fertilizer (15:15:6:4)  of 12, 10, and 8 grams/two weekly/seedling can increase the growth of 8-month-old MN oil palm seedlings. The better seedling growth was produced by the application of 8 grams of fertilizer/two weekly/seedling and empty bunches. Application of all co-products can improved NUE in MN nurseries. Improvement of  NUE along with the decrease in the dose of NPKMg application (8 ?10?12 grams/two weekly/seedling).
Keanekaragaman Fungi Mikoriza Arbuskula pada Perkebunan Kelapa Sawit Rakyat Wijayani, Suprih; Wirianata, Herry
Agrin Vol 25, No 2 (2021): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2021.25.2.646

Abstract

Cendawan mikoriza arbuskula (CMA) mempunyai beragam peran dalam banyak agroekosistem, termasuk perkebunan kelapa sawit. CMA menjadi bagian strategis dalam budidaya kelapa sawit secara berkelanjutan, termasuk perkebunan rakyat. Penelitian ini bertujuan untuk mengungkap diversitas dan populasi CMA dalam hubungan dengan sifat tanah perkebunan rakyat. Sampel tanah komposit diambil dari zona perakaran kelapa sawit sedalam 5-20 cm pada 6 lokasi perkebunan rakyat yang berbeda. Isolasi dan kerapatan spora CMA ditentukan dengan metode tuang saring dilanjutkan dengan identifikasi genus dan observasi kolonisasi kelapa sawit. Sifat tanah diamati untuk menentukan status hara, kandungan bahan organik, pH dan KPK. Hasil penelitian menunjukkan diversitas CMA di perkebunan rakyat rendah, hanya ditemukan 3 genus dengan kerapatan yang berbeda. Acaulospora sp. ditemukan pada semua kebun dengan kerapatan tertinggi dan Glomus sp. dengan kerapatan rendah, sedangkan Gigaspora sp. jarang ditemukan. Spora Acaulospora sp. dan Glomus sp. melimpah pada tanah masam dengan kandungan bahan organik rendah. Spora CMA tidak ditemukan pada tanah yang mempunyai pH netral dan kandungan bahan organik, P total dan tersedia, Fe dan Zn yang tinggi dan sering kalitergenang (kebun Sungai Kupang). Acaulospora sp. dan Glomus sp. berpotensi besar menjadi pupuk hayati untuk perkebunan kelapa sawit rakyat, terutama pada tanah yang kurang subur.Kata kunci : sifat tanah, perkebunan sawit rakyat, diversitas, FMA
Co-Authors Kritalisasi, Elizabeth Nanik Masrur, Muhammad Aqib Rawana Wirianata, Herry