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All Journal JURNAL AGRILAND Jurnal Agrotek Tropika
Edy Sumantri
Universitas Islam Sumatera Utara
Agriculture, Biological Sciences & Forestry

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Pengujian Efikasi Alelopati Cyperus rotundus L. Terhadap Gulma Asystasia gangetica (L.) T. Anderson di Perkebunan Aldywaridha Aldywaridha; Usman Nasution; Asmanizar Asmanizar; Edy Sumantri; Arif Anwar; Teuku Alfajri Dwi Irfa
AGRILAND Jurnal Ilmu Pertanian Vol 9, No 2 (2021): Agriland: Jurnal Ilmu Pertanian
Publisher : Universitas Islam sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/agr.v9i2.4257

Abstract

Teki (Cyperus rotundus L.) merupakan gulma penting di dunia yang tersebar luas di daerah tropis dan sub tropis yang dapat menimbulkan kerugian besar karena kemampuannya menekan pertumbuhan tanaman secara signifikan dan sulit dikendalikan. Namun, C. rotundus mengandung senyawa alelopati yang dapat menghambat pertumbuhan dari tanaman padi ataupun gulma Asystasia gangetica dan gulma lainnya. Penelitian ini bertujuan untuk melihat efek alelopati C. rotundus terhadap perkecambahan biji A. gangetica di perkebunan. Penelitian menggunakan Rancangan Acak Lengkap Non-Faktorial tiga ulangan dengan bentuk alelopati C. rotundus sebagai perlakuan. Hasil penelitian menunjukkan bahwa C. rotundus menimbulkan efek alelopati terhadap perkecambahan dan pertumbuhan gulma A. gangetica, sehingga mengakibatkan penurunan daya kecambah gulma A. gangetica, menyebabkan abnormalitas kecambah, serta menekan pertumbuhan gulma A. gangetica. C. rotundus juga berpotensi untuk dikembangkan dan dimanfaatkan sebagai pestisida nabati dalam pengendalian gulma A. gangetica di perkebunan.
EFEKTIVITAS MINYAK BIJI Jatropha curcas MENGENDALIKAN KEPIK PENGHISAP POLONG KEDELAI Nezara viridula (HEMIPTERA: PENTATOMIDAE) DI RUMAH KASA Asmanizar Asmanizar; Aldywaridha Aldywaridha; Edy Sumantri; Ardiansyah Putra Damanik
Jurnal Agrotek Tropika Vol 8, No 2 (2020): JURNAL AGROTEK TROPIKA VOL 8, MEI 2020
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.318 KB) | DOI: 10.23960/jat.v8i2.3579

Abstract

Green Stink Bug Nezara viridula (Hemiptera: Pentatomidae) is an important pest on soybean. The yield losses could be qualitatively and quantitatively. Controlling by using synthetic insecticide caused negative impact. Hence, controlling by using botanical insecticide was as an alternative. The study was conducted at wire house, to know the effect of J. curcas seed oil concentration on N. viridula mortality, pod damaged, empty pod, seed damaged and dry seed weight. The J. curcas seed oil was obtained by Soxhlet Extractor. The concentration of J. curcas seed oil as the treatment, viz. 0% (control); 0.125; 0.25 dan 0.5% (volume oil/volume solution,v/v), and the water as solution applied on soybean plant which was infested of ten N. viridula adult. The result showed all variable observed affected by J. curcas seed oil concentration. The 0.25 and 0.5% concentration showed the mortality reached 95.0 and 100% at 6 days after treatment, while,  pod damaged was 7.34 and 1.84%; empty pod was 25.32%, seed damaged was 3.72 and 0.78% and weight of dry seed was 9.94 and 10.44 g.  The weight of dry seed at control treatment was 5.52 g. The J. curcas seed oil at 0.5% of concentration has a potency to control N. viridula on soybean plant. There is a need further study to know the effectivity on soybean in the field.
Co-Authors Aldywaridha Aldywaridha Ardiansyah Putra Damanik Arif Anwar Asmanizar Asmanizar Teuku Alfajri Dwi Irfa Usman Nasution