ABSTRACT The research aim to study the change of ultisol soil chemical properties after crop upland rice (Oryza sativa L.) that applied biochar from agricultural waste as rice husk and shell of coconut. The research was conducted at Agricultural Faculty Experimental Unit and soil laboratory, university of riau, pekanbaru city. The research was conducted experimentally with a completely ra…
ABSTRACT Soil biodiversity takes an important role part in maintaining the soil quality. However, the diversity of soil mesofauna on peatlands overgrown of Mucuna bracteata under the stand of oil palm plantation are likely rare to review. therefore, this study aims to see the diversity of meso fauna on peatlands that covered by the different age of Mucuna bracteata. This research was condu…
ABSTRACT This research aims to tested several isolates of Trichoderma sp. endophytic and obtained isolates from Trichoderma sp. the best endophyte to control Ceratocystis sp. in vitro. This research was conducted at the Laboratory of Plant Protection Department of PT. Arara Abadi, Pinang Sebatang Village, Tualang District, Siak Regency, Riau. This research was conducted for 4 months from …
ABSTRACT Mungbean (Vigna radiata L.) is a legume crop and in Indonesia ranks third after soybeans and peanuts. Mung bean production in Riau in 2018 decreased by 14 tons compared to 2017 where the 2017 production was 448 tons to 434 tons in 2018 or decreased by 3.13%. Increased production can be done through increasing land area, increasing soil productivity, among others by providing a su…
The role of tidal land use in Riau Province is increasingly important, given the large potential for tidal land. The tidal soil water level greatly determines the response of rice varieties, and in fact each rice variety is different in responding to water availability. The purpose of this study was to determine the response to growth and production of several rice varieties (Oryza sativa L…
ABSTRACT The purpose of this research is to determine some potential lines to be continued with the preliminary yield trial. The Lines used obtained from selected F3 plants resulted from a cross between Grobogan and KM19 having large seed and early maturity. Thirteen genotypes, consisting of the 11 F6 lines and two parents namely Grobogan and KM19 were planted in the Experimental Station o…
Oil palm is a crop of high economic value and is suitable for cultivation in tropical climates such as Indonesia. Oil palm plantation development continues because it is an oil-producing commodity consisting of crude CPO and kernel or kernel. Riau province has a very large area of peat land, which has great potential for agricultural cultivation. availability of macro and micro nutrients in…
This study aims to determine the effect of the administration of gibberellins ZPT and obtain the best ZPT concentration on the growth and production of melon plants. The study was conducted in the Experimental Garden of the Faculty of Agriculture, University of Riau, Tampan District, Pekanbaru. The height of the study site is 10 m above sea level. The study was conducted for three months, …
This study aims to determine the effect of better doses of phosphorus fertilizer at various concentrations of gibberellins, better concentrations of gibberellins at various doses of phosphorus fertilizer, better effect of phosphorus and gibberellins on growth and production of tomato plants (Lycopersicum esculentum Mill.). The study was conducted in the Experimental Garden of the Faculty o…
ABSTRACT The aim of this study was to test several endophytic fungi isolates with high antagonistic power against seed borne fungi in vitro and their effect on the growth of chili (Capsicum annuum L.) seedlings in vivo. This research was conducted at the Plant Disease Laboratory and Greenhouse Faculty of Agriculture, Riau University from October 2018 to February 2019. This research was con…
The aim of this study is to determine the effect of foliar supplemented fertilizer (FSF) applied at different spraying intervals on vegetative growth, yield components and seed yield of soybean plants. The study was conducted in Faculty of Agriculture Experiment station from March to June 2018 using a split plot design with three replications. Three levels of spraying intervals such days W1…
Cocoa (Theobroma cacao L.) is a plantation crop that has an important role in the national economy. Conopomorpha cramerella Snellen is a pest that causes a decrease in cocoa production in the field. The recommended control is using botanical insecticides using soursop leaves (Annona muricata L). This study aims to obtain best concentration of soursop leaf flour extract (A. muricata L) to co…
This study aims to determine the effect of the interaction between the administration of petrhikaphos and phosphorus fertilizer, the single factor of petrhikaphos and phosphorus fertilizer and to get the best dose of petrhikaphos and phosphorus fertilizer on the growth and production of soybean plants (Glycine max (L.) Merril). This research is a factorial experiment arranged according to …
Oil palm (Elaeis guineensis Jacq.) holds a very strategic role in the Indonesia economy. Plants that have reached the economic age of 25 years need to be replanted using qualified oil palm seedlings. The qualified seedling is obtained through proper fertilization. One of the efforts that can be done is to use biofertilizer made from cellulolytic bacteria combined with organic liquid waste. …
Aphis gossypii Glover is the main pest that attacks chili plants. Control efforts that are often carried out are by using synthetic insecticides. Safe pest control is to use vegetable insecticides. Srikaya is a plant that can be used as a botanical insecticide. The purpose of this study was to obtain an effective concentration of srikaya leaf powder extract against A. gossypii pest mortalit…
ABSTRACT This study aims to produce varieties of shallots (Allium ascalonicum L.) from seeds with better growth and production by adjusting the spacing. The research was conducted at the experimental garden of the Faculty of Agriculture, Riau University, Pekanbaru from May to October 2019, in a factorial completely randomized experimental design in three replications. The first factor is t…
ABSTRACT Spodoptera frugiperda J. E. Smith is the main pest attacking maize crops. The usual control is the use of synthetic insecticides, but the continuous or unwise use of synthetic insecticides will have a negative impact on humans and the environment, therefore an alternative insecticide that is safe and environmentally friendly, such as tuba roots (Derris elliptica Benth) is needed. …
ABSTRACT This research aims to increase the production of rose flower (Rosa hybrida L.) in quality standards by takenthe paclobutrazol which is done at different age of rose cuttings. The research was conducted on the Faculty of Agriculture experimental farden, Riau University, from May 2019 to August 2019. The study was conducted in the 4 x 4 factorial completely randomized design (CRD) i…
ABSTRACT This study aims to determine the physical characteristics of skin powder, chitin and chitosan that prepared from skin of sea cucumber (H. scabra). The analysis parameters observed were physical characteristics, moisture content and ash content. The skin of H. scabra has blackish gray color with yellow and black spots originating from the dorsal part and white skin with yellow and …
ABSTRACT The aim of the research was to evaluate effect of soaking baraccuda fish stick into the liquid smoke at varied concentration on the consumer acceptance and to determine the optimum concentration of liquid smoke in the processing of smoked fish sticks. The treatment given was soaking the fish into the liquid smoke solution at varied concentration (0%, 4%, 8%, and 12%). The paramete…