ABSTRACT Soybean (Glycine max (L.) Merril) is plays an important role in Indonesia economy because the commodity is used as one of main staple food for the community. The gap between national demand and production is getting wider lately due to limited best cultivars and poor cultivation techniques. So that, this study was intended to determine genetic parameters and relationships among severa…
ABSTRACT The aim of the research was to determine the effect of the interaction between damping the canopy and applying potassium fertilizer on the production of oil palm (Elaeis guineensis Jacq.) plants at close spacing. This research was conducted in Petapahan Village, Tapung District, Kampar Regency from December 2021 to June 2022 in the form of a randomized block design trial with two trea…
ABSTRACT This study aims to look at the variability of seed development variables and yield components of several soybean varieties planted at several planting densities. This research was carried out experimentally using a randomized block design consisting of two factors and three replications, so that 15 combinations and 45 experimental units were obtained. The observed characters included …
ABSTRACT Aquilaria malaccensis is one of the timber forest products containing mastic which has high economic value. The decline in the Aquilaria malaccensis population has triggered an increase in the cultivation of gaharu by the community. Aquilaria malaccensis cultivation in Riau Province with peat soil types often experiences problems, where peat is marginal land for agriculture because of…
ABSTRACT Aquilaria malaccensis is one of the timber forest products containing mastic which has high economic value. The decline in the Aquilaria malaccensis population has triggered an increase in the cultivation of gaharu by the community. Aquilaria malaccensis cultivation in Riau Province with peat soil types often experiences problems, where peat is marginal land for agriculture because of…
ABSTRACT The aim of the study was to obtain the best combined dose of inorganic fertilizers N,P,K and organic fertilizers for the growth and production of paddy rice (Oryza sativa L.) so as to reduce the use of inorganic fertilizers. The study used a non-factorial Completely Randomized Design (CRD). The treatments used were: 100% inorganic fertilizer; 100% inorganic fertilizer + petroganic; 10…
ABSTRACT Cultivation of soybean plants on Ultisol has low available-P constraints. One of the efforts to increase available-P is by fertilizing. This study aims to obtain the best combination of doses of N, P, K fertilizers with the best number of applications of phosphate solubilizing bacterial biofertilizers for growth and results in reducing inorganic use in soybean plants in Ultisol soil. …
ABSTRACT This study aims to obtain the best combined dose of NPK fertilizer and organic fertilizer on the growth and production of red chili (Capsicum annuum L.) in reducing the use of NPK fertilizer. The research was conducted in Langsat Permai Village, Bunga Raya District, Siak Regency for six months from March to August 2022. This research was conducted experimentally using a non-factorial …
The objective of this study is determine response of four varieties on various rates of phosphorous fertilizer. The field experiment was arranged in a with randomized complete block design three replications. Seed of each cultivar was planted in a plot of 3 m by 2 m with planting space of 40 cm between rows and 20 cm within a row. Parameters observed were plant height, time to flowering, time t…
ABSTRACT This study was to determine the genetic relationship and phenotype of mung bean seed development and yield components of several varieties of mung bean planted at various planting densities so that good characters can be found for determining direct and indirect selection criteria. The study used a randomized block design (RBD) with two factors and three replications, so that 12 combi…
ABSTRACT Pennywort (Centella asiatica L. Urban) is a plant that contains medicinal secondary metabolites. Tissue culture is one solution in producing secondary metabolites in large quantities. The objectives of this research were to determine the effect and the best combination of 2,4-D and BAP in inducing callus on pennywort leaves. The research was used a randomized block design with two fac…
ABSTRACT Using tolerant varieties is the most effective way to utilize the potential of saline soils, however, the number of varieties and germplasm as gene donors for saline tolerance is very limited. This research aims to determine the tolerance of several local rice genotypes from Siak Regency to salinity stress in the nursery phase. This research used a split plot design. The main plot is …
ABSTRACT Indonesia’s cacao productivity is low, need effort by utilized cultivation technology. Cacao can grow in many different types of soils, including Dystrudepts. Dystrudepts require tillage to increase land productivity. Application of organic matter can increase land productivity. Chicken manure is an organic matter that includes enough nutrients. Support with rice husk biochar can in…
ABSTRACT Due to their high nutritional value, shallots are versatile and offer many health benefits. Riau Shallot Productivity Relatively Low. Soil fertility is the reason for low shallot productivity. To increase soil fertility can using liquid organic fertilizers, such as goat urine fermentation, which can promote plant growth. The purpose of this study was to determine the efficacy of g…
ABSTRACT Rice development on saline soils is still constrained due to limited varieties suitable for development in saline areas in an effort to improve salinity tolerant varieties. This research aims to determine the effect of NaCl and several genotypes on salinity stress of rice plants in the seedling phase and to obtain local rice genotypes from Siak Regency that are tolerant to salinity st…
ABSTRACT This study aims to determine the interaction of EFBO compost with P fertilizer, and to obtain the best combination of EFBO compost and P fertilizer among the treatments to support the growth and production of green beans (Vigna radiata L.). This study used a completely randomized design. The first factor is the dose of EFBO compost consisting of 3 levels (0, 10 and 20 t.ha-1). The sec…
ABSTRACT The extensification of oil palm that occurs every year causes the suitable land area for oil palm growth to dwindle, thus encouraging farmers to extend land on sub-optimal land, one of which is Dystrudepts land. Dystrudepts has many problems, especially on the physical properties. This study aims to evaluate the effect of applying oil palm empty fruit bunch (OPEFB) compost and its com…
ABSTRACT The purpose of this study was to determine the effect of goat dung compost fertilizer on Lokananta shallot varieties and Bima Brebes shallot varieties and to obtain the best dose of goat dung compost fertilizer for the growth and production of both varieties. This research was carried out at UPT Experimental Gardens, Faculty of Agriculture, University of Riau, from February 2021 to Apr…
ABSTRACT This study aims to determine the influence and interaction of regulating the number of fronds and applying potassium fertilizers to the components of oil palm crop production. This study was carried out experimentally using a randomized design of factorial groups. The first factor is the number of fronds with 3 levels (56, 50, and 44 fronds per plant). The second factor is potash …
ABSTRACT Phytophthora palmivora is one of the important diseases that cause cacao pod rot disease. This disease can cause production loss up to 90%. P. palmivora control is often carried out using chemical fungicides which often results in the emergence of new problems and environmental pollution, so an environmentally friendly control is needed. This study reported the inhibitory ability of B…