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Rochman, Fajar
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Journal : AGRICOLA

 1 
Efektivitas Ekstrak Daun Sirsak (Annona muricata L.) Sebagai Insektisida Organik Dalam Mengendalikan Hama Walang Sangit (Leptocorisa acuta) Pada Padi Sawah Rahmadi, Rizky; Priyadi, Priyadi; Rochman, Fajar
AGRICOLA Vol 12 No 2 (2022): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/ag.v12i2.4558

Abstract

Keberadaan walang sangit pada budidaya padi sawah dapat menyebabkan penurunan hasil produksi sampai 50%. Diperlukan metode pengendalian hama untuk mempertahankan hasil produksi yang bersifat ramah lingkungan salah satunya menggunakan insektisida organik. Tujuan penelitian mengetahui efektivitas insektisida organik daun sirsak terhadap tingkat kematian hama walang sangit. Penelitian dilaksanakan di Teaching Farm Padi Sawah Politeknik Negeri Lampung pada bulan Februari sampai April 2022. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan 8 perlakuan dan 3 ulangan. Setiap plot ulangan diberikan 10 hama walang sangit dewasa untuk pengamatan di tanaman padi. Perlakuan yang diujikan antara lain: k0=Kontrol; Ekstrak daun sirsak dengan konsentrasi : k1=5%, k2=10%, k3=15%, k4=20%, k5=25%, k6=30%, k7=35%, dan k8=40%. Insektisida organik daun sirsak dengan konsentrasi 10 – 40% efektif dalam mengendalikan hama walang sangit pada padi sawah yang ditunjukkan dengan perbedaan yang nyata pada persentase efikasi, LT50, jumlah gabah total, gabah hampa, dan gabah isi permalai.
Respons Pertumbuhan dan Produksi Tanaman Jagung (Zea Mays ssp. mays) akibat Aplikasi Dosis Pupuk Kalium dan Nitrogen pada Tanah Kering Masam dengan Pemberian Amelioran Rochman, Fajar; Priyadi, Priyadi; Rahmadi, Rizky
AGRICOLA Vol 13 No 1 (2023): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/ag.v13i1.5054

Abstract

The prospect of increasing productivity of drylands as a food provider is very promising, especially for maize production, which plays an equally important role as a food crop compared to rice. However, in general, the quality of drylands in Indonesia is relatively low. This study aims to further investigate the application of dolomite combined with inorganic fertilizers such as rock phosphate, K and N fertilizers to improve the quality of dry soil, which has the potential to increase maize productivity. The research was conducted at the Seasonal Crop Field of Lampung State Polytechnic from October to December 2022. The study used an experimental method with a Completely Randomized Block Design (CRBD) with 6 treatments and 6 replications. The treatments tested included: k0: without fertilizer; k1: KCl fertilizer dose of 50 kg/ha; k2: KCl fertilizer dose of 100 kg/ha; k3: KCl fertilizer dose of 150 kg/ha; n1: Urea fertilizer dose of 200 kg/ha; n2: Urea fertilizer dose of 250 kg/ha. The results of the study showed that the treatment of KCl fertilizer dose of 100 kg/ha significantly showed the best response on the average parameter of Wet Grain Weight per Cob, Dry Grain Weight per Cob, and Weight per Cob Without Corn Husk of Corn Plants
Dominansi dan Keragaman Gulma Pada Tanaman Jagung (Zea mays L.) dengan Sistem Tanam Konvensional dan Jajar Legowo Rahmadi, Rizky; Rochman, Fajar; Dulbari, Dulbari; Priyadi, Priyadi; Sari, Resti Puspa Kartika; Widyani, Dimas Prakoso; Ashadi, Ibnu
AGRICOLA Vol 14 No 2 (2024): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/ag.v14i2.6015

Abstract

The presence of weeds is a significant factor that contributes to the decline in maize yield. To reduce yield loss, appropriate weed control methods must be applied. The first step in determining these methods is to identify weed dominance and diversity. This study aims to identify the dominance and diversity of weeds in three corn planting systems: conventional, jajar legowo 1:2, and 1:3 spacing. The research was conducted at the Teaching Farm Polinela Organic Farm in Lampung Province from November to December 2023. Vegetation analysis was performed using a 0.5 m2 quadrant randomly placed on 10 plots of land. The dominance value of weeds was determined using the Summed Dominance Ratio (SDR) value, while the diversity of weeds was measured using the Shanon-Wiener index value (H'). The study found that the conventional field had 9 weed species, the 1:2 legowo field had 8 weed species, and the 1:3 legowo field had 5 weed species. Ageratum conyzoides was the dominant broadleaf weed species in both the conventional corn field and jajar legowo 1:2, while Asystasia gangetica dominated the jajar legowo 1:3 corn field. The weed diversity index analysis results for the three corn planting systems fall into the medium category. Specifically, the results are 2.12 for conventional corn fields, 1.94 for 1:2 jajar legowo corn fields, and 1.3 for 1:3 jajar legowo corn fields.
Co-Authors Ahyuni, Destieka Andri Setiawan Ashadi, Ibnu Buana, Arum Sekar Cahya, Sevagus Waskita Denny Sudrajat Dulbari Dulbari, Dulbari Effendy, Arga Satria Evi Yunita Sari, Evi Yunita Hidayat Saputra, Hidayat Holil, Maskur Khairunnisa, Fahira Dewi Lestari, Citra Ayu Lina Budiarti, Lina Maharani, Juwita Suri Mahendra, I Gede Rio Muqoddam Mutaqin, Zainal Ningrum, Ayu Pratama, Miandri Sabli Priyadi Priyadi Priyadi Priyadi Priyadi Priyadi Putri, Ade Maulydiah Rahmadi, Rizky Sari, Resti Puspa Kartika Subarjo subarjo, Subarjo Surahman, Suryansyah Taisa, Rianida Tamaulina Br Sembiring Widyani, Dimas Prakoso Yuriansyah Yuriansyah Yuriansyah, Yuriansyah