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.

ABSTRAKTumbuhan yang berpotensi sebagai pestisida nabati, diantaranya sirsak (Annona muricata), kirinyuh (Choromoleana odorata) dan lengkuas (Alpinia galanga). Tujuan penelitian ini adalah menguji efektivitas ekstrak daun sirsak, kirinyuh dan rimpang lengkuas terhadap pertumbuhan koloni Colletotrichum acutatum, penyebab penyakit antraknosa pada tanaman cabai, secara in vitro. Penelitian dilaksanakan di laboratorium Fakultas Pertanian Universitas Siliwangi mulai bulan Juli sampai Agustus 2016. Rancangan Percobaan menggunakan Rancangan Acak Lengkap yang terdiri dari 9 perlakuan dengan 3 ulangan. Perlakuan terdiri dari : A = kontrol; B = ekstrak daun sirsak 0,5%; C = ekstrak daun sirsak 1%; D = ekstrak daun kirinyuh 0,5%; E = ekstrak daun kirinyuh 1%; F = ekstrak rimpang lengkuas 0,5%; G = ekstrak rimpang lengkuas 1%; H = campuran ekstrak daun sirsak, kirinyuh dan rimpang lengkuas 0,5%; dan I = campuran ekstrak daun sirsak, kirinyuh dan rimpang lengkuas 1%. Hasil penelitian menunjukkan bahwa campuran ekstrak daun sirsak, kirinyuh dan rimpang lengkuas 1% efektif dalam menghambat pertumbuhan koloni C.acutatum, pada masa inkubasi 7 hari sebesar 66,19% dan pada masa inkubasi 14 hari sebesar 69,94%. Ketiga ekstrak pestisida nabati tersebut memiliki potensi sebagai anti jamur C. acutatum.Kata Kunci : Antraknosa, Cabai, Pestisida nabati ABSTRACT Several plants that are potentially used as bio-pesticides are soursop, siam weed, and galangal. The research objective was to find out the effectiveness of leaf extract of soursop and C. odorata, and extract of galangal rhizome in inhibiting the growth of Colletotrichum acutatum colonies, causing antracnose on chilli, in in vitro. The experiment was conducted in the laboratory of Agriculture Faculty, Universitas Siliwangi Tasikmalaya from July until August 2016. The research design used was a completely randomized design consisted of nine treatments and three replications. The treatments were A ( control); B (soursop leaf extract, 0,5%); C (soursop leaf extract, 1%); D (C. odorata leaf extract, 0,5 %); E (C. odorata leaf extract 1%); F (galangal rhizome extract 0,5%); G (galangal rhizome extract 1%); H (mixture of soursop leaf extract, C. odorata leaf extract, and galangal rhizome extract each 0,5%; and I (mixture of soursop leaf extract, C. odorata leaf extract, and galangal rhizome extract each 1%). The results

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The Red pepper is the one of horticulture commodity that has fluctuative high economic value. Myzus persica, Bactrocera spp. and Colletotrichum spp. are the major pests in red pepper, causing decreased quality and quantity of products. The aims of this experiments were to the develop integrated pest management of these pests, by utilization of botanical pesticides to control the pests. This experiment was arranged in randomized complete block design with five replicates. The treatments consisted of five levels, i.e: extraction of Jatropha curcas,Tinospora rumphii, Annona muricata and Toona sureni. The results showed that the botanical pesticides effective for controlling Aphids and Bactrocera spp. in seven weeks after plant. The botanical pesticide give the significant effect compare with control treatment. Extraction of Tinospora rumphii is the best efectivity for controlling Aphids (Myzus persicae). The botanical pesticide effective for controlling Aphids and Bactrocera spp. in seven weeks after plant. The extraction of Jatropha curcas and Toona sureni resulted the best efficacy to control the fruit flies (Bactrocera sp.).