Maize is an important commodity in Indonesia and is vulnerable to maize weevil (Sitophilus zeamais) during storage which can cause a 100% yield loss. Chasew Nut Shell Liquid (CNSL) is a botanical pesticide able to control S. zeamais. Increasing CNSL efficiency and effectiveness requires additional adjuvants, such as solvents and dyes. Natural dyes addition is intended to provide seed markers. This study aimed to determine the best CNSL and natural dye formulation to control maize weevil and maintain maize seeds quality during storage. The research was conducted from August to October 2018 at the Agronomy Laboratory, Faculty of Agroindustry, Yogyakarta Mercu Buana University. The research was a single factor consisted of seven treatments with four replications arranged in a completely randomized design (CRD). Treatments were combinations of CNSL concentrations with the addition of natural dyes from suji leaf and teak leaves with one untreated control. The results of the research showed that CNSL as a seed treatment botanical pesticide could cause mortality and suppress S. zeamais populations and maintain the quality of maize seeds during storage for 12 weeks. Treatments with 20% CNSL formulation concentration and the addition of natural dyes both leaf pleomele or teak leaves could cause higher mortality and push down more populations and also could better maintain seed quality than 10 and 0% CNSL formulation concentrations.

The demand for soybean has been steadily increasing year after year. Pests are one of the most significant barriers to increasing soybean production. The goal of this study was to determine what concentration of soapberry fruit extract to use as an adjunctive ingredient in cashew nut shell liquid (CNSL) formulations to obtain the best pest control effect and soybean growth and yield. This study used a randomized complete block design with a single factor: soapberry extract concentration. The research included four treatments: application of CNSL formulations containing 4%, 3%, 2%, and 0% soapberry extract, application of CNSL formulations containing 1 g/liter detergent, synthetic pesticides (Fastac 1-2 liters/ha), and no pesticides as a control. Insecticide applications were effective against grasshopper and pod-sucking bugs in soybean cultivation; the CNSL with 3%, 4% soapberry and the CNSL with detergent had effectiveness comparable to the synthetic insecticides. Soybean growth was unaffected by any of the CNSL formulations or synthetic insecticide applications. However, using a CNSL formulation with 4% soapberry increased soybean yield as much as using a synthetic insecticide; it did not differ significantly from using a CNSL formulation with detergent. The soybean yield was highest in the CNSL formulation with detergent. Keywords: Keywords: soybean, soapberry, CNSL, pest

PT Humolco LNG Indonesia merupakan salah satu perusahaan pelayaran armada transportasi yang bergerak di bidang pengelolaan kapal (ship management), yang mengatur keperluan suku cadang kapal beserta pelaporannya. Sistem pelaporan suku cadang masih dilakukan secara manual sehingga perusahaan kesulitan dalam mengontrol persediaan suku cadang. Penelitian ini dilakukan dengan tujuan untuk menentukan model inventarisasi dan pengadaan suku cadang yang tepat untyk diterapkan di PT Humolco LNG Indonesia. Penelitian dilakukan menggunakan metode deskriptif kuantitatif dengan melakukan perhitungan analisis koefisien korelasi. Data didapatkan dari inventory list spare part kapal di PT Humolco LNG Indonesia. Penggunaan sistem inventory control berbasis website lebih efektif dalam mengatasi kesulitan yang sedang dihadapi perusahaan. Sistem ini dapat diakses dimana saja dan kapan saja oleh karyawan kantor dan awak kapal sehingga memudahkan untuk mengontrol keadaan suku cadang kapal.