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All Journal Agroprimatech Journal of Agrotechnology and Sustainability
Benauli, Arkhiadi
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Agriculture, Biological Sciences & Forestry Environmental Science

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PENGARUH EKSTRAK KULIT BAWANG MERAH DALAM MENGENDALIKAN HAMA ULAT GRAYAK (Spodoptera litura F.) SECARA IN VITRO Yunda Gusriani; BENAULI, ARKHIADI; SULASTRI, YUSTINA SRI
Agroprimatech Vol. 7 No. 2 (2023): Agroprimatech
Publisher : Prodi Agroteknologi Fakultas Agro Teknologi Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/agroprimatech.v7i1.4232

Abstract

This research was conducted to determine the dose of shallot skin extract that is effective for controlling Spodoptera litura F. This research was carried out for 2 months at the Biology Laboratory, Faculty of Agriculture, Santo Thomas Catholic University, Medan. The research design used was a Non-Factoral Completely Randomized Design (CRD) consisting of five treatments and each treatment was repeated four times to form 20 experimental units of Red Onion Skin Soaking (K), namely: K0 = 0% (Control), K1 = 20 gr/liter of water, K2 = 40 gr/liter of water, K3 = 60 gr/liter of water, and K4 = 80 gr/liter of water. The parameters observed were pest mortality, 50% death time and larval behavior after application. From the research results, it can be seen that administering shallot skin extract at the highest dose, namely 80 g/L, can be quadratically used as a botanical insecticide to control S. litura pests with a death time of 27 hours
EKSTRAK DAUN PANDAN WANGI (PANDANUS AMARYLLIFOLIUS ROXB.) DALAM MENGENDALIKAN ULAT GRAYAK (SPODOPTERA LITURA F.) DI LABORATORIUM Benauli, Arkhiadi; Sitohang, Nurdin; Gusriani, Yunda; Harefa, Syukur Berkat
AGROSUSTAIN Volume 1 Nomor 1 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v1i1.2480

Abstract

This research was conducted at the Biology Laboratory, Faculty of Agriculture, Universitas Katolik Santo Thomas, Medan. This study aims to determine the potential of fragrant pandan leaf extract as a vegetable pesticide in controlling armyworm pests. This study used a non-factorial completely randomized design (CRD). The treatment factor was fragrant pandan leaf extract (Pw) which consisted of 5 treatments and 4 replications, namely: Pw0 = (control/without giving fragrant pandan leaf extract), Pw1 = 20 ml of fragrant pandan leaf extract, Pw2 = 40 ml of pandan leaf extract fragrant, Pw3 = 60 ml of fragrant pandan leaf extract and Pw4 = 80 ml of fragrant pandan leaf extract, each treatment added with 100 ml of distilled water. The results showed that the highest percentage of mortality (100%) at 108 hours after application (JSA) was found in the treatment of 80 ml of fragrant pandan leaf extract + 100 ml of aquadest. The fastest death time of 50% of armyworms was found in the treatment of 80 ml of fragrant pandan leaf extract + 100 ml of aquadest, which was 30 JSA.
KARAKTERISTIK BUAH DAN BIJI KAKAO (Theobroma cacao L) PADA BERBAGAI ALTITUDE DI DATARAN TINGGI SAMOSIR Sitohang, Nurdin; Benauli, Arkhiadi; Sitanggang, Peby; Zagoto, Fran A.
AGROSUSTAIN Volume 1 Nomor 2 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v1i2.2889

Abstract

The cocoa beans of small holder were usually still low quality, one of it caused by planting location of various altitude in highland. The focus of this research were characteristic of cocoa pod and beans on several altitudes in Samosir highland. The research method were survey as purposive sampling on five altitudes as 815, 930, 1.073, 1.300, and 1.350 m above sea levels (asl). The observed parameters were pod size, pod diametre, pod volume, dry weight of pods, dry weight of kolven, dry weight of beans, bean count per pod, and dry weight per bean at 5 different altitudes, in Samosir highland (>800 m asl) ie: 815, 930, 1.073, 1.300, and 1.350 m asl, with 10 pods (replications) at each altitudes. The results of research showed that: pod size increased, pod diametre increased, pod dry weight increased, dry weight of beans increased, bean count per pod increased, and dry weight each bean increased with the increasing of altitude. The best pods and beans were at altitude of 1.350 m asl, namely fruit length 19.20 cm, fruit dry weight 92.65 g, beans dry weight 47.73 g, number of beans per fruit 40.5 and average weight per bean 1.20 g. The physical characteristics of cocoa pods and beans are still in the normal category.
Co-Authors Gusriani, Yunda Harefa, Syukur Berkat Nurdin Sitohang Sitanggang, Peby Yunda Gusriani Yustina Sri Sulastri Zagoto, Fran A.