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Journal : Jurnal Silvikultur Tropika (JST)

The Effect of Two Types of Coffee-Based Agroforestry on The Population of Black Ants (Dolichoderus sp.) on The West Slope of Raung Mount Dewi, Nilasari; Aini, Falzah Riski Khoirotul; Haryadi, Nanang Tri; Kurnianto, Agung Sih
Journal of Tropical Silviculture Vol. 15 No. 03 (2024): Jurnal Silvikutur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.15.03.201-209

Abstract

Gunung Raung merupakan gunung yang terletak di tiga kabupaten di Jawa Timur, yakni Kabupaten Jember, Bondowoso, serta Banyuwangi. Salah satu pemanfaatan lahan di lereng barat Gunung Raung digunakan sebagai lahan agroforestri berbasis kopi. Penggerek buah kopi merupakan hama yang sering ditemui oleh petani kopi di Desa Rowosari dan masih sulit dikendalikan. Salah satu pengendalian yang dapat dilakukan adalah dengan menciptakan vegetasi yang mendukung keberadaan musuh alami khususnya Dolichoderus sp. Penelitian ini bertujuan untuk mengetahui pengaruh berbagai jenis agroforestri terhadap populasi semut hitam (Dolichoderus sp.). Penelitian ini dilakukan dengan metode analisis vegetasi untuk mengetahui karakter vegetasi dan menggunakan alat vakum untuk mengumpulkan semut. Jumlah populasi semut Dolichoderus sp. pada lahan wanatani sederhana berbasis kopi terdapat 6.520 individu, sedangkan pada lahan wanatani kompleks berjumlah 1.330 individu. Data yang diperoleh kemudian dianalisis menggunakan analisis regresi dan korelasi. Hasil penelitian menunjukkan bahwa keanekaragaman dan kekayaan tumbuhan bawah mempunyai hubungan yang negatif, sedangkan hubungan antara keanekaragaman dan kekayaan tumbuhan bawah menunjukkan hubungan yang positif. Kata kunci: agroforestri, tanaman kopi, Dolichoderus sp.
GROWTH RESPONSE OF SOYBEAN (Glycine max (L.) MERRILL) TO ADDITION SENTANG LEAVES (Azadirachta excelsa (JACK.) JACOBS) AND MINDI LEAVES (Melia azedarach Linn.) Wijayanto, Nurheni; Dewi, Nilasari; Wardani, Aditya
Journal of Tropical Silviculture Vol. 7 No. 3 (2016): Jurnal Silvikultur Tropika (Suplemen Desember)
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.7.3.S39-S41

Abstract

Soybeans is one of important food sources in Indonesia mainly as protein resources. The needs of soybeans which increasing and lower number of cultivation land causes soybeans import. Soybeans productivity improvement could be done by agroforestry system. Mindi and sentang are a fast growing species which famously cultivated at this time. One of benefit gained from agroforestry system is providing sources of organic material. Planting combination between mindi and sentang with soybeans could give organic material such as from mindi leaves and sentang leaves. This research aimed to examine the response of soybeans growth to the additional of leaves. The experimental design used was Complete Random Design (CRD) with single factor and seven treatments (control, dry whole, dry chopped, dry powder, wet whole, wet chopped, and wet powder. This research shows that the addition of sentang leaves does not impact to the diameter and height growth. The additional of mindi leaves give not significantly different to the growth of soybeans diameter, total dry mass, and total wet mass. The additional of sentang leaves give effect to the growth of number of leave, total wet mass, total dry mass and total pud mass. The additional of mindi leaves give significant impact to the height, number of leaves, and pot mass. The treatment give best impact to total pud mas was sentang dry leave chopped and mindi dry leave whole.Key words: Agroforestry, Azadirachta excelsa, Glycine max, Melia azedarach