The interrelationship of Bacillus thuringiensis Berliner var. kurstaki to the diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), and its primary parasitoid, Diadegma insulare Cress. (Hymenoptera: Ichneumonidae), was investigated using laboratory colonies of the insects. The differential response of third-instar diamondback moth, parasitized and unparasitized, to B. thuringiensis (Bt), and the ability of D. insulare to oviposit in Bt-stressed hosts were determined. No significant difference (P > 0.05) was found between the mean mortality of parasitized and unparasitized larvae at each of three concentrations (154, 334, and 2,237 IU/ml) of Bt endotoxin. The three concentrations were equivalent to the LC30, LC50, and LC90 of Bt potency based on preliminary tests. Parallel line assay analysis, however, revealed that the linear dose-response regressions of parasitized and unparasitized larvae were highly significant (P = 0.0001). The LC50s of parasitized versus unparasitized larvae were 373 and 175 IU/ml Bt endotoxin, respectively, indicating that parasitized larvae were less susceptible to Bt. Female D. insulare oviposited in Bt-stressed hosts. The percentage of D. insulare females emerging from Bt-treated larvae (41.4%) was not significantly different from that of untreated larvae (32.0%).
Kegiatan pengembangan ternak lebah madu khususnya madu hutan skala rakyat sudah dilakukan di Desa Sungai Pagar Kecamatan Kampar Kiri Hilir Kabupaten Kampar Provinsi Riau. Daerah ini sangat baik bagi pengembangan lebah madu hutan yang ditandai dengan 85 % dari luas lahan merupakan perkebunan yang menghasilkan tanaman bunga sebagai sumber pakan lebah madu, adanya sumber air yang dibutuhkan lebah madu dan adanya bahan pembuatan sarang yang mudah untuk didapatkan. Peternak madu hutan telah mengenal madu kelulut karena harga jual relative lebih mahal, namun masih minim pengetahuan tentang madu kelulut ini, baik dalam aspek budidaya maupun dalam aspek ekonominya. Oleh sebab itu, perlu dilakukan kegiatan pengabdian masyarakat berupa penyuluhan kepada peternak madu terhadap peran budidaya madu kelulut dalam meningkatkan pendapatan keluarga. Berdasarkan pada analisis situasi yang dikemukakan diatas, maka dapat diidentifikasi bahwa peternak madu hutan di Desa Sungai Pagar masih perlu pengerahuan dan keterampilan dalam teknik budidaya madu kelulut, karena kegiatannya baru dimulai serta pengetahuan bahwa madu kelulut lebih menjanjikan kedepannya. Kegiatan pengabdian masyarakat dilakukan oleh tim dosen Fakultas Pertanian Universitas Islam Riau pada Tanggal 22 Juli 2019. Tema kegiatan adalah sosialiasi mengenai peran madu kelulut dalam meningkatkan pendapatan keluarga di Desa Sungai Pagar Kecamatan Kampar Kiri Hilir Kabupaten Kampar Propinsi Riau. Manfaat pengabdian ini: (1) Dapat membekali peternak madu untuk lebih memiliki pengetahuan tentang madu kelulut sehingga dapat meningkatkan pengetahuan dan meningkatkan pendapatannya sebagai peternak madu.; (2) Sumbangan pemikiran untuk lebih mengembangkan budidaya madu kelulut sesuai dengan standar umum budidaya madu, sehingga produksi dapat lebih ditingkatkan.
Riau is a province in Sumatra Island with the widest peatland covering up to ± 4,04 million Ha or about 56,1% of the area, with various type of peat, including the potentially submerged peat area. With the peat charasteristics drawbacks such as low nutrient content and relatively high acidity, cause this type of land barely cultivated for horticulture crop such as shallot. Whilst, in Indonesia, shallot is part of daily society culinary component. Therefore, efforts are needed to make use of peat land for this type of commodity by overcoming the shortages, for example by applying Trichocompost combined with Grand-K fertilizer. This research thus aimed at evaluating the growth and yield of shallot in potentially submerged peat soil, treated with Trichocompost and Grand-K Fertilizer. Experiment was conducted on peat soil in Labersa Street Kelurahan Simpang tiga Kecamatan Bukit Raya Kota Pekanbaru for three months, from October to December 2019. The experiment was arranged in completely factorial design with two factors; each at four levels. The factors were Trichocompost (at 0, 2, 4, 6 ton ha-1) and Grand K fertilizer (at 0, 50, 100, 150 kg ha-1). The parameters observed were the percentage of seed viability, plant height, number of leaf, number of tuber, and the yield per plan. Results of the experiment showed that the best combination of treatment was Trichokompos at 4 – 6 ton ha-1 dan Grand K at 150 kg ha-1.
Ulat tritip, Plutella xylostella, merupakan hama cosmopolitan yang memiliki kecendrungan tinggi untuk resisten terhadap insektisida konvensional. Oleh karenanya perlu terus dikaji bahan alternative yang berpotensi insektisidal untuk hama ini. Kirinyuh, Chromolaena odorata, merupakan gulma invasive yang memiliki kandungan senyawa dengan potensi insektisidal. Penelitian ini telah dilaksanakan di Laboratorium Hama dan Penyakit Fakultas Pertanian Universitas Islam Riau, Jalan Kaharudin Nasution, Kelurahan Simpang Tiga, Kecamatan Bukit Raya, Pekanbaru KM 11; dengan tujuan untuk mengetahui pengaruh interaksi konsentrasi filtrate daun kirinyuh dengan dua cara aplikasi (metoda tetes/topical dan metoda celup daun/pakan). Rancangan yang digunakan adalah rancangan acak lengkap ( RAL ) faktorial, dimana faktor pertama adalah berbagai tingkat konsentrasi larutan daun kirinyuh ( D ) terdiri dari 5 taraf perlakuan yaitu : kontrol, 150 gr/liter air, 300 gr/liter air, 450 gr/liter air dan 600 gr/liter air dan faktor kedua adalah cara aplikasi ( A ) yang terdiri dari 2 taraf perlakuan dimana cara pertama yaitu larutan yang ditetesi secara topikal ketubuh larva dan bahan makan larva yang dicelupkan kedalam larutan. Parameter yang diamati dalam penelitian ini adalah : persentase mortalitas larva Plutella xylostella, persentase larva menjadi pupa, persentase pupa menjadi imago dan dampak perlakuan terhadap progeni. Dari hasil pengamatan menunjukkan bahwa pemberian berbagai tingkat konsentrasi filtrat kirinyuh dan cara aplikasi larutan daun kirinyuh secara interaksi berpengaruh secara nyata terhadap parameter pengamatan persentase mortalitas larva, persentase larva menjadi pupa, dan persentase pupa menjadi imago. Kombinasi perlakuan terbaik yaitu pada konsentrasi tertinggi yang di uji 600 g bahan per liter air dan metode celup daun. Sedangkan perlakuan utama tingkat konsentrasi larutan kirinyuh berpengaruh nyata terhadap seluruh parameter pengamatan. Pengaruh konsentrasi semakin besar dengan semakin tinggi konsentrasi. Sedangkan untuk perlakuan utama cara aplikasi larutan kirinyuh berpengaruh nyata terhadap parameter pengamatan persentase mortalitas larva, persentase larva menjadi pupa, dan persentase pupa menjadi imago, dengan perlakuan terbaik dengan cara metoda celup daun/pakan. Kata Kunci: Plutella xylostella, Chromolaena odorate, Brassica olerasia var capitata, cara aplikasi
The identification of the key components in the response to drought stress is fundamental to upgrading drought tolerance of plants. In this study, biochemical responses and leaf gas exchange characteristics of fig (Ficus carica L.) to water stress, short-term elevated CO2 levels and brassinolide application were evaluated. The ‘Improved Brown Turkey’ cultivar of fig was propagated from mature two- to three-year-old plants using cuttings, and transferred into a substrate containing 3:2:1 mixed soil (top soil: organic matters: sand). The experiment was arranged as a nested design with eight replications. To assess changes in leaf gas exchange and biochemical responses, these plants were subjected to two levels of water stress (well-watered and drought-stressed) and grown under ambient CO2 and 800 ppm CO2. Water deficits led to effects on photosynthetic rate, stomatal conductance, transpiration rate, vapour pressure deficit, water use efficiency (WUE), intercellular CO2, and intrinsic WUE, though often with effects only at ambient or elevated CO2. Some changes in content of chlorophyll, proline, starch, protein, malondialdehyde, soluble sugars, and activities of peroxidase and catalase were also noted but were dependent on CO2 level. Overall, fewer differences between well-watered and drought-stressed plants were evident at elevated CO2 than at ambient CO2. Under drought stress, elevated CO2 may have boosted physiological and metabolic activities through improved protein synthesis enabling maintenance of tissue water potential and activities of antioxidant enzymes, which reduced lipid peroxidation.
Shallot and cayenne pepper are two national superior commodities that must continue to be cultivated in order to meet the daily needs of the community. The purpose of the study was to determine the land productivity of the shallot and cayenne pepper intercropping system with POC Biological and Solid treatment. This research was carried out at the Experimental Farm of the Faculty of Agriculture, Islamic University of Riau for 6 months, starting from October 2020 to March 2021. The study used a completely randomized design with 2 factorials, the first was the dose of Solid fertilizer with 4 treatment levels, namely 0 tons/ha, 5 tons /ha, 10 tons/ha, 15 tons/ha and the second is the concentration of Biological POC with 5 treatment levels, namely 0 ml/l water, 2 ml/l water, 4 ml/l water, 6 ml/l water, 8 ml/ l water. Parameters observed in shallot plants were plant height, number of tubers per clump, wet bulb weight per plant, dry bulb weight per plant, and in cayenne pepper plants were plant height, number of fruits per plant and fruit weight per plant. Observational data were analyzed statistically and continued with the further BNJ test at the 5% level. The results showed that the Solid and POC hayati treatment in shallots had a significant effect, with the best treatment being 4 ml/l water and 10 tons/ha. Meanwhile, the cayenne pepper plant has no effect except for plant height.
ABSTRACT The purpose of this study was to determine the effect of applying vermicompost fertilizer and POC Nasa on the growth and production of shallots (Allium ascalonicum L.). This research has been carried out in the Experimental Garden of the Faculty of Agriculture, Riau Islamic University for 4 months, starting from July to October 2018. The design used in this study was a factorial Completely Randomized Design consisting of 2 factors. The first factor is vermicompost fertilizer (K) which consists of 4 levels namely 0, 200, 400, 600 g / plot and the second factor is POC Nasa (P) consisting of 4 levels namely 0, 2, 4, 6 cc / l water. The parameters observed in this study were plant height, harvest age, number of tubers per clump, wet tuber weight per sample, dry tuber weight per sample, tuber weight loss. The last observation data were statistically analyzed and continued with a BNJ follow-up test at the 5% level. The results showed that the application of vermicompost fertilizer and poc nasa interaction significantly affected the parameters of plant height, age of harvest, the number of tubers per clump, dry tuber weight per sample, shrinkage of tuber weight, and the application of vermicompost fertilizer and poc nasa interactively had no significant effect on wet tuber weight parameters per sample with the best treatment is a concentration of 600 g / plot (K3) and 6 cc / water (P3) is a dose of 44.80 grams/plot. Keywords: POC, Kascing, Shallot
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.