The research aims to study the effect of the application ultra gen biofertilizer and N, P, K fertilizer on the growth and production of onion (Allium ascalonicum L.). The research was conducted at Agricultural Faculty Experimental Unit, University of Riau, Pekanbaru. The research in form factorial experimentally 5x3 arranged in a completely randomized design. The first factor was ultra gen biofertilizer consists of 5 levels (without, 50, 100, 150 and 200 l.ha-1). The second factor was a N, P, K fertilizer consists of 3 levels (without, 100 kg N + 45 kg P2O5 + 37,5 kg K2O and 200 kg N + 90 kg P2O5 + 75 kg K2O.ha-1), each combination was repeated 3 times. The parameters observed were number of bulb per clump, circumference of bulb, weight of bulb fresh per clump, weight of bulb fresh per plot and weight of bulb consumption per plot. The application of ultra gen biofertilizer doses of 100 l.ha-1and N, P, K fertilizer 100 kg N + 45 kg P2O5 + 37,5 kg K2O.ha-1 increased weight of bulb fresh per clump, weight of bulb fresh per plot and weight of bulb consumption per plot significantly compared to another combination, but not significantly on number of bulb per clump and circumference of bulb.

Tanaman binahong merah (Basella rubra L.) merupakan salah satu tanaman yang mengandung senyawa metabolit sekunder berkhasiat obat. Kultur kalus adalah salah satu solusi dalam menghasilkan senyawa metabolit sekunder dengan jumlah yang besar.  Penelitian ini bertujuan untuk mengetahui pengaruh pemberian 2,4-D dan kinetin dalam menginduksi kalus daun binahong merah. Penelitian dilakukan di Laboratorium Bioteknologi Tanaman Fakultas Pertanian Universitas Riau pada bulan November 2019 sampai Maret 2020. Percobaan menggunakan rancangan acak kelompok yang terdiri dari dua faktor yaitu 2,4-D dengan empat taraf konsentrasi yaitu 0 ppm, 0,5 ppm, 1 ppm dan 2 ppm dan kinetin dengan empat taraf konsentrasi yaitu 0 ppm, 0,5 ppm, 1 ppm dan 2 ppm dengan tiga ulangan. Hasil penelitian menunjukkan bahwa kombinasi perlakuan tanpa 2,4-D dan 0,5 ppm kinetin memberikan respon terbaik pada saat muncul kalus 11,67 HST dan perlakuan 1 ppm 2,4-D dan 2 ppm kinetin memberikan respon terbaik pada persentase keberhasilan induksi kalus 62,50 %.  Red binahong (Basella rubra L.) is a plant that contains medicinal secondary metabolites.  Callus culture is one solution in producing secondary metabolites in large quantities. This research aimed to determine the effect of 2,4-D and kinetin in inducing callus on red binahong leaves. The research was conducted at the Laboratory of Plant Biotechnology, Faculty of Agriculture, the University of Riau from November 2019 to March 2020. The experiment used a randomized block design with two factors, namely four levels of 2,4-D 0, 0.5, 1, and 2 ppm and four levels of kinetin namely 0, 0.5, 1, and 2 ppm with three replications. The results showed that a combination of 0 ppm 2,4-D and 0.5 ppm kinetin and 1 ppm 2,4-D and 2 ppm had the fastest callus formation 11.67 DAP and a combination of 1 ppm 2,4-D and 2 ppm kinetin produced weigher callus 6.4 mg and had a percentage of callus formation 62.50%.

Oil palm plantation has an important role for the development of national plantation in Indonesia, in purpose to create job opportunities that lead to community welfare and also become the source of foreign exchange or tax for the country. Over the last four years, the area of oil palm plantation in Indonesia has increased from 10.4 million hectares since 2013 and continued to 12.30 million hectares in 2017 with total production 34.47 million tons of Crude Palm Oil (CPO). This research was conducted using experimental research by applying the form of the two-stage nested plot with the treatment arrangement of factor 2 into factor 1. The first factor was oil palm variety which includes of 3 levels, namely V1: Tenera DxP Marihat variety, V2: Tenera DxP Topaz 3 variety, and V3: Tenera DxP Socfindo Lame variety. The second factor was the volume of water supply which consists of 4 levels, namely A1 = 1000 ml per day per plant, A2 = 1500 ml per day per plant, A3 = 2000 ml per day per plant, and A4 = 2500 ml per day per plant. The Observation parameters are photosynthetic rate, leaf area, seedling height, and diminutive diameter of trunk, number of leaves, wet weight, plant roots, root crown ratio, and seed quality index. The results showed that the volume of water affected all growth components of several varieties of oil palm seedlings, both on the variables of photosynthesis rate, leaf area, seedling height, and diminutive diameter of trunk, number of leaves, wet weight, plant root volume, root crown ratio, and seed quality index.

The study aimed to determine the effect of various organic fertilizers on growth and yield of several varieties of upland rice, and the response of upland rice varieties to organic fertilizers under the stands of oil palm trees have not produced (TBM). The researches conducted in March until July 2016. This study was a randomized block design factorial trial with two factors and three replications, the first factor was some upland rice variety consist of ; Inpago 8 (V1), Situ Bagendit (V2), and Inpago 9 (V3) and the second factor was the variety of organic fertilizers such as; without organic fertilizer (BO0), compost of oil palm empty fruit bunches (BO1), chicken manure (BO2), Kirinyuh or green manure (BO3). Data were analyzed by ANOVA and a further test of Duncan’s multiple range test (DNMRT) level of 5%. The results showed that the varieties Situ Bagendit gave the best response to organic fertilizer by weight of dry milled grain at 4.6 tonnes/ha in the giving of chicken manure.