ABSTRAKKemiri Sunan merupakan tanaman alternatif penyediaan bahan bakar nabati dan bahan baku berbagai produk industri. Kulit benih kemiri yang keras menjadi penghalang dalam perkecambahan. Kondisi ini dapat diperbaiki dengan pemberian zat pengatur tumbuh (ZPT) eksogen alami seperti umbi bawang merah sumber auksin, rebung bambu sumber giberelin, bonggol pisang dan air kelapa sebagai sumber sitokinin. Tujuan penelitian adalah mengetahui kemampuan berbagai bahan ZPT alami atau kombinasinya untuk menstimulasi perkecambahan dan pertumbuhan bibit kemiri sunan asal biji. Penelitian dilakukan pada bulan Juni sampai Oktober 2016, rancangan percobaan yaitu Rancangan Acak Kelompok yang diulang tiga kali, dengan perlakuan: a0 : kontrol (tanpa ZPT); a1 : ekstrak umbi bawang merah (BM); a2 : ekstrak rebung bambu (RB); a3: ekstrak bonggol pisang (BP); a4 : air kelapa (AK); a5: BM + RB; a6 : BM + BP; a7 : BM + AK; a8 : RB+ BP; a9 : RB+ AK; a10 : BP+ AK; a11 : BM + RB + BP + AK. Hasil penelitian menunjukkan pengaruh yang berbeda terhadap daya kecambah, tinggi bibit umur 30 hari setelah tanam (HST), 37 HST, 44 HST, dan 51 HST, juga jumlah daun pada 51 HST. Aplikasi zpt BP + AK menghasilkan daya kecambah paling baik (97,78 %), namun tidak berbeda dengan aplikasi RB + BP; BM+ RB+ BP+ AK; BM + AK. Aplikasi zpt asal BP + AK menghasilkan tinggi bibit tertinggi (13,57 cm). Jumlah daun terbanyak dihasilkan pada aplikasi BP + AK (1,45 helai). Secara umum zpt bonggol pisang + air kelapa memberikan hasil paling baik, namun umbi bawang merah maupun rebung bambu mempunyai harapan untuk dikembangkan.Kata kunci : air kelapa, bawang merah, bonggol pisang, kemiri sunan, rebung bambu ABSTRACT Candlenut cv. Sunan is alternative biofuels plant also as raw of many industrial products.

Nutmeg (<em>Myristica fragrans Houtt</em>) is an important spices in Indonesia. The advantages of nutmeg is essential oil content, the result of distillation which is for the spices industry, the manufacture of soaps, perfumes, cosmetics, have high economic value and are a source of foreign exchange to non oil &amp; gas, Indonesia is able to supply the needs of the market the world of up to 70% to 75%. Generally, nutmeg in Indonesia use generative propagation which has the strong root system and long life, but the germination takes a long time. Using the natural plant growth regulators for germination can be used to accelerate growth. Natural PGR’s can be extracted from some plants such shallot as a source of auxin, banana hump as a source of cytokinins, and bamboo shoots as a source of giberellin.The purpose of this study was to determine the types of natural PGR’s that have good effect on the growth of nutmeg seedling. The experiment was carried out in Desa, Bugel, Kecamatan Ciawi Tasikmalaya with altitude at 600 meters above sea level, from June 2018 to September 2018. This study used Randomized Completely Block Design (RCBD) Method. The treatments were: a0= control, a1= shallot, a2= bamboo shoot, a3= banana hump, a4= shallot + bamboo shoot, a5= shallot +, banana hump, a6= bamboo shoot + banana hump, a7= shallot + bamboo shoot + banana hump.The result showed that:1) type of natural substances plant growth regulator effected on various growth variable, 2) Combination of shallot bulb + bamboo shoot, or combination of shallot bulb + bamboo shoot and banana hump good effected on plant height, seedling diametre, number of leaf, leaf area, and shoot root ratio.

The carbonization of lignocelullosic waste to obtain wood vinegar (WV) was investigated in this work. WV was used as a botanical insecticide against armyworm (Spodoptera litura), which is known as a major pest of soybean crops in Indonesia. This study includes the following: (i) the assessment of potential use of lignocellulosic waste from mahogany wooden-sandal home industry; (ii) the determination of the yield of various components of carbonization process, from each unit of the waste; and (iii) the application of the produced WV as larvicide on S. litura larvae in the laboratory. The experiments were arranged in a completely randomized design, and the observed variables included mortality and anti-feedant activity of S. litura larvae. The data were analyzed using analysis of variance with Duncan's multiple differences test. The results showed that the amount of wood waste generated at wooden-sandal craftsman level was 16.12%. Carbonization of 1,000 g of the wood waste yielded WV, tar, bio-oil, and char in quantities of 442.68 g, 36.5 g, 4.04 g, and 251 g, respectively. The treatment using WV concentration of 1.5% to 3.0% showed low larvacidal action, which gave LC50 value of 12.82%, but it had adequate anti-feedant activity.

Pada umumnya petani membuat media jamur tiram putih (Pleurotus ostreatus (Jacq) P. Kumm) berbahan dasar serbuk kayu, diantaranya sengon. Namun ketersediaanya semakin hari semakin berkurang, sehingga diperlukan alternatif bahan lain sebagai substitusi, misalnya sekam padi yang mengandung serat tinggi dengan komposisi utama selulosa 33% sampai 44%, lignin 19% sampai 47%, hemniselulosa 17% sampai 26%, pentose 16,95% sampai 21,95% dan silica 13%. Tujuan penelitian adalah mengetahui pertumbuhan dan hasil jamur tiram putih pada berbagai komposisi media tanam. Penelitian dilakukan pada bulan Maret sampai dengan Juni 2019 di Kecamatan Bungbulang Kabupaten Garut. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) sederhana, diulang sebanyak 5 kali. Perlakuan terdiri dari p0 (100% serbuk kayu), p1 (15% sekam padi + 85 % serbuk kayu), p2 (30 % sekam padi + 70 % serbuk kayu), p3 (45 % sekam padi + 55 % serbuk kayu) dan p4 (60 % sekam padi +40% serbuk kayu). Analisis data menggunakan uji Fisher pada taraf kesalahan 5% dan dilanjutkan dengan Uji Jarak berganda Duncan untuk mengetahui pertumbuhan dan hasil paling baik pada perlakuan tersebut. Hasil penelitian menunjukkan bahwa jumlah tubuh buah dan bobot basah jamur tiram putih yang lebih baik terdapat pada komposisi 15 % media sekam + 85% serbuk kayu, yaitu 38,70 tubuh buah dan bobot basah 493,98 g.

<p>The purpose of the research was to studied the response of honey pumpkin (Cucurbita moschata Durch) to the kind of natural PGRs substances in various dosages.The research was conducted at the Greenhouse of griculture Faculty Siliwangi University since April 2017 until September 2017, by ecperiment method using Randomized Block Design, 9 treatments, i.e., b0: control, b1: onion bulb 200 ml, b2: onion bulb 300 ml, b3: bamboo shoots 200 ml, b4: bamboo shoots 300 ml, b5: banana 200 ml, banana b6: banana 300 ml, b7: mix (onion bulb + bamboo shoots + banana) 200 ml, b8: mix (onion bulb + bamboo shoots + banana) 300 ml. Each of treatmnent replicated three times. The parameters analyzed were plant height, number of leaves, leaf area, plant dry weight, fruit weight per plant, fruits weight per pieces, fruit length, and fruit diameter. The results showed that honey pumpkin gave the same response to the natural PGRs with various dosages on plant height, number of leaves, plant dry weight, fruit weight, fruit length, and fruit diameter. But, honey pumpkin gave the different response on the leaves area and fruit weight per plant. The largest leaves was found by giving extract of banana bulb of 300 ml (7119.8 cm2) and the mixture extract (onion bulb + bamboo shoots + banana bulb) of 300 ml (6978.5 cm2). The highest of fruit weight per plant is in extract of bamboo shoots 300 ml (388.6 g), and extract of banana bulb 300 ml (347.6 g).</p>