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All Journal Bioplante Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian Jurnal Entomologi Indonesia
Dwi Ristyadi
Agroekoteknologi, Fakultas Pertanian, Universitas Jambi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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EKSPLORASI CENDAWAN ENDOFIT DARI TANAMAN PADI SEBAGAI AGENS PEMACU PERTUMBUHAN TANAMAN (The Exploration of Endophytic Fungi from Oryza sativa as Plant Growth Promoting Agents) Weni Wilia; Islah Hayati; Dwi Ristyadi
Bioplantae Vol. 1 No. 4 (2012): Bioplantae
Publisher : Bioplantae

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Abstract

Endophityc fungi have been successfully isolated from Oryza sativa atLaboratory of Plant Disease, Agriculture Faculty University of Jambi. Theaim of this research was to get endophityc fungi from Oryza sativa. Therewere three (3) candidates of endophityc fungi that have been successfullyisolated. Pathogenosity test which was done showed that all of fungi wereendophityc fungi. Those fungi were identified as endophityc fungi due to theseed of paddy could growth normally in pure culture of endophityc fungi. Thethree of isolated endophityc fungi were identified as Hifa steril 1, Hifa steril 2,and Fusarium sp.Keyword: endophityc fungi, Oryza sativa
Effect of pesticide types on community structure of arthropod in soy crops Dwi Ristyadi; Nigel Andrew; Rachel Waugh
Jurnal Entomologi Indonesia Vol 10 No 2 (2013): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.946 KB) | DOI: 10.5994/jei.10.2.85

Abstract

This study was carried out on three soybean farms located in the Liverpool Plains Shire in New South Wales, Australia. The soybean farms were different in terms of pesticide type used. One of the soy crops was sprayed with broad spectrum synthetic pesticides (synthetic pyrethroids), one site of soy crop was sprayed with natural pyrethrum - an organically certified pesticide, and one of the soy crops was not treated with any pesticides. Arthropod samples were collected on three occasions at every site except in the third site of soy crops which was not treated with any pesticides. Samplings were done using sweep nets and beat sheets. There were no significant differences of community structure change between farms treated with different pesticide regimes (F2,5= 4.2599, P(perm)= 0.188), and no significant differences in arthropod species richness. The abundance of arthropods was significantly different for site treated with biopesticide and site treated with synthetic pyrethroids (G6 = 284.36, P <0.0001), non-sprayed site and site treated with synthetic pyrethroids (G6 = 2110, P < 0.0001), and non-sprayed site to site treated with biopesticide (G6 = 2027, P < 0.0001). The use of synthetic pesticides in agriculture has been found to suppress pests and beneficial arthropods, while the use of biopesticides or without pesticide, to some extent, may let beneficials thrive in the system and also may suppress pest arthropods.
Intensitas Budidaya Tanaman Terhadap Komunitas dan Fungsi Ekologi Arthropoda Fransiska Lilis Maita; Fuad Nurdianysah; Dwi Ristyadi
Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian Vol. 3 No. 1 (2020): Jurnal Agroecotania: Publikasi Nasional Ilmu Budidaya Pertanian
Publisher : Jambi University, Fakultas Pertanian, Program Studi Agroekoteknologi

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Abstract

Salah satu kendala utama yang dihadapi petani dalam budidaya tanaman hortikultura adalah serangga herbivora. Tingginya ketergantungan petani terhadap penggunaan pestisida sintetik dalam mengendalikan serangga herbivora dan gulma menyebabkan terganggunya keseimbangan ekosistem. Penelitian ini bertujuan mengkaji dan menganalisa pengaruh intensitas penggunaan pestisida sintetik dan keragaman vegetasi di lahan pertanian terhadap struktur komunitas dan fungsi ekologi Arthropoda. Metode yang digunakan dalam penelitian ini yaitu melakukan survei lapangan di lokasi lahan pertanian (konvensional dan pertanian ramah lingkungan) dan habitat alami (semak belukar dan hutan sekunder). Penelitian ini menggunakan beberapa jenis perangkap Arthropoda yaitu perangkap yellow pan dan pitfall serta tanaman sampel (sawi) untuk melihat intensitas kerusakan daun pada setiap habitat dan dilanjutkan dengan identifikasi Arthropoda beserta fungsi ekologinya. Hasil penelitian menunjukkan bahwa tingginya intensitas budidaya tanaman lahan konvensional, maka terdapat kecendrungan kerusakan hama semakin tinggi, tidak stabil antara populasi hama dan musuh alami, sebaliknya semakin rendah intensitas budidaya seperti pada habitat ramah lingkungan dan habitat alami dan jenis dan jumlah arthropoda melimpah sedangkan kerusakan hama rendah.
Insect pollinators on Ananas comosus Linn. in pineapple cultivation hub at Tangkit Baru Village, Jambi Province: A preliminary study Ratna, Yuni; Ristyadi, Dwi; Arifah, Windyna
Jurnal Biolokus : Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 8, No 1 (2025): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v8i1.3732

Abstract

The flowers of Ananas comosus, pineapple, are generally self-sterile which means seeds will only develop if cross-pollination occurs. Therefore, insect pollinators play a crucial role in fostering and preserving genetic diversity in pineapple plants. Our research aimed as a preliminary study to gain insight into the key pollinators that play a significant role in the pollination of A. comosus in Tangkit Baru village, a prominent pineapple cultivation hub in Jambi Province. Sampling was done in 20 sampling points, five times at five-day intervals. Sampling was carried out using yellow sticky traps, sweep net, and direct observation. All the collected insects were identified to species level, then species diversity and evenness were assessed using Shannon’s diversity index (H’) and Pielou’s evenness index (J’). A total of 1167 individuals, representing 31 distinct species of insect pollinators belonging to 14 families were found in our sampling sites. We found four dominant species that could potentially serve as the key pollinators of A. comosus in our sampling site, i.e. Dolichoderus thoracicus, Pygophora enigma, Pygophora respondens, and Anoplolepis gracilipes. The diversity and evenness of insect pollinators in the sampling site were at a moderate level, with Shannon’s diversity index (H’) value of 2.0785 and pielou’s evenness index (J’) value of 0.6053. Habitat enhancement measures are needed to preserve and improve the existing pollinator diversity and evenness in the agroecosystem.
Co-Authors Arifah, Windyna Fransiska Lilis Maita Fuad Nurdianysah Islah Hayati Nigel Andrew Rachel Waugh Ratna, Yuni Weni Wilia