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Harahap, Parmanoan
Universitas Graha Nusantara
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Journal : Journal Agro-Livestock

 1 
Dinamika Serangan Hama Utama pada Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) di Periode Pra-Produksi Muharram; Parmanoan Harahap; Siti Hardianti Wahyuni
Journal Agro-Livestock Vol. 2 No. 02 (2024): JAL - Oktober
Publisher : Yayasan Perguruan Kampus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65474/qe53vh35

Abstract

This main pest can damage oil palm crops at the unproductive harvest stage (TBM). The purpose of this study is to determine the prevalence of severe pest attacks on non-producing oil palm (TBM) plants. Unproductive crops (TBM) were selected for data collection on the main pest infestation areas. Data from the available regional pest attack observations were obtained by selecting local pest attack data. The observed parameter is the severity of pest attacks in 2022. Observation results show that the rate of rat attacks increases in the dry season, while other pests decrease in the rainy season. From the observation results, it can be concluded that the proportion of damage caused by rats increases in the dry season, while other pests decrease in the rainy season. From June to July, rats (0.35%), horned beetles (0.35%), and yellow beetles (0.15%) were exposed to pests, and from July to August, rats (0.5%) were exposed to horn beetles (0.1%) and beetles. and brown beetles (0.15%). The pest infestation category (rats, horn beetles, and brown beetles) is classified as a light attack.
Penggunaan Ekstrak Daun Pepaya (Carica papaya) sebagai Insektisida Nabati terhadap Hama Ulat Daun (Spodoptera litura) pada Sawi Doharni; Parmanoan Harahap; siti Hardianti Wahyuni
Journal Agro-Livestock Vol. 3 No. 01 (2025): JAL - Januari
Publisher : Yayasan Perguruan Kampus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65474/hgdg7e24

Abstract

This study aimed to examine the effect of papaya leaf extract (Carica papaya) in controlling leaf-eating caterpillar pests (Spodoptera litura) on mustard greens (Brassica juncea). The research was conducted in Muara Pertemuan Village, Mandailing Natal Regency, from November 2023 to February 2024. The method used was a Randomized Block Design (RBD) with five treatments and six replications, resulting in a total of 30 experimental units. The treatments consisted of A0 (control), A1 (papaya leaf extract 50 g/L water), A2 (100 g/L water), A3 (150 g/L water), and A4 (200 g/L water). The observed parameters included the number of plants infested by Spodoptera litura, the number of damaged leaves, and plant yield. The results showed that increasing the concentration of papaya leaf extract effectively reduced the number of plants and leaves infested by Spodoptera litura. The highest yield was obtained from the treatment with 200 g/L papaya leaf extract, with an average production of 5700 grams.
Pengaruh Aplikasi Pupuk Organik Cair terhadap Hasil Panen Padi (Oryza sativa L.) Heru Pranoto Simangunsong; Parmanoan Harahap; Meilinan Friska
Journal Agro-Livestock Vol. 3 No. 01 (2025): JAL - Januari
Publisher : Yayasan Perguruan Kampus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65474/nfzg3009

Abstract

Rice plants (Oryza sativa L.) are one of the staple foods for the Indonesian population. The increasing population demands an increase in the availability of rice. The development of the food crop sector, especially rice, is one of the key strategies in driving economic growth. Liquid organic fertilizers have several benefits, including encouraging and increasing the formation of leaf chlorophyll, thereby increasing the photosynthetic ability of plants and the absorption of nitrogen from the air, increasing plant vigor so that plants become sturdy and strong, increasing plant resistance to drought, stimulating the growth of production branches, increasing the formation of flowers and fruit buds, reducing the fall of flowers and fruit buds. The purpose of this study was to determine the effect of providing liquid organic fertilizer on rice plant production. This research was conducted from January 2023 to April 2023 in South Tapanuli Regency. The method in this study was a Non-Factorial Randomized Block Design (RAK) with 4 types of liquid organic fertilizer treatments. The results showed that liquid organic fertilizers did not affect all observation parameters, namely the number of panicles per clump, the number of grains per panicle, the wet weight of the grain and the dry weight of the grain. The best treatment was at U3.
Co-Authors Abdul, Rauf Benny, Hidayat DE, Harahap Doharni Doharni Pane Erin Alawiyah Siregar, Erin Alawiyah Erwin Masrul Harahap Erwin Masrul Harahap Fitra Syawal Harahap Fitra Syawal Harahap Fitra Syawal Harahap Fitra Syawal Harahap Fitra Syawal, Harahap FS, Harahap Handayani, Surya Harahap, Basitu Rahmat Harahap, Darmadi Erwin Hardianti Wahyuni, Siti Heru Pranoto Simangunsong Hilwa, Walida Laia, Nursanti Mahyuni Khairiyah Harahap Mahyuni Khairiyah, Harahap Meiliana Friska Meilinan Friska Muharram Nasution, Andri Pratama Nasution, Jumaria Nasution, Zakiyah Nikmatia, Ulfa Pane, Doharni Rahmawaty, Rahmawaty Rikardo Silaban Rizky Amnah Rosmayati Rosmayati Rosmayati Rosmidah , Hasibuan Siregar, Dewi Dia Siti Hardianti Wahyuni siti hardianti wahyuni, siti hardianti Sutan , Pulungan T., Sabrina Yanty, Dini Puspita Yusriani Nasution Zakiyah Nasution