ABSTRACT The conversion of peat swamp forests into various land uses followed by the construction of canals causes the peat to mature more quickly. This study aims to determine the characteristics of peat maturity in various land uses in the Kampar Peninsula. The research was conducted on six land uses, namely mixed garden, oil palm, acacia plantations, open land, peat swamp scrub and primary …
ABSTRACT This study aims to determine the interaction, combination and effect of rice husk biochar and a source of phosphate fertilizer on the chemical properties of Ultisol soil and the growth and yield of shallot plants. The research was carried out at the Experimental Garden and Laboratory of Soil Science, Faculty of Agriculture, University of Riau from May to August 2022. The research was …
ABSTRACT The aims to identified the number of types of macrofauna and mesofauna as well as the growth and productivity of oil palm plants on Dystrudepts soil applied with compound fertilizer (KCaMgS) and oil palm empty fruit bunch (OPEFB) mulch. Research using randomized block design (RBD) consisted of six treatments with three replications to obtain 18 experimental units. Parameters observed …
ABSTRACT Shallot (Allium ascalonicum L.) is a root vegetable and is one of the leading horticultural commodities used as a mixture of seasonings and processed form. The need for shallots continues to increase as the population increases. Data from the Central Statistics Agency and the Director General of Horticulture (2020) show that shallot production in Riau is relatively low. This low produ…
ABSTRACT Rose ornamental plants have economic value benefits, such as raw materials for perfumes, medicines and cosmetics. In general, the propagation of rose plants is by cuttings, but the success rate is relatively low due to the delay in the root development of the cuttings. The addition of exogenous hormones in the form of natural growth regulators (ZPT) is needed to overcome obstacles to …
ABSTRACT This research aims to determine the interaction of bulbil weight and auxin, the best effect of auxin concentration and bulbil weight, and the best combination of auxin and bulbil weight on increasing the growth of porang seedlings. The research was carried out from June to August 2022. The research was carried out experimentally in the form of a 3 x 4 factorial, arranged using a compl…
ABSTRACT Corn (Zea mays L.) is an important food crops in Indonesia. Spodoptera frugiperda J.E. Smith is a pest that attak on young leaves Zea mays L.. Pepper elder (Peperomia pellucida L.) is one of the plants that has the potential as a botanical insecticide to control pests. This research was aimed to obtain an effective concentration of stems and leaves pepper elder (P. pellucida L.) to co…
ABSTRACT Shallot is a superior horticultural commodity which is widely used, but shallot production in Riau Province is still relatively low, this is caused by fusarium wilt disease caused by the pathogen Fusarium oxysporum. This study aims to obtain the level of attack of fusarium wilt in shallot planting areas in Kandis District and Bunga Raya District, Siak Regency. Survey and observation m…
ABSTRACT This study aims to look at the variability of seed development variables and yield components of several green bean varieties planted at several planting meetings. The study was carried out experimentally using a randomized block design consisting of two treatment factors resulting in 12 combinations and three replications, resulting in 36 experimental units. The observed characters i…
ABSTRACT This study aims to determine the effect of induction of salicylic acid and obtain the best concentration in controlling basal stem rot disease caused by Ganoderma sp. isolate LPTUNRI-Gan003 in the main nursery. This was an experimental study conducted in April 2022 to July 2022 at the Laboratory of Plant Pathology and Greenhouse Plant Production Agricultural Laboratory, Faculty of Agr…
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…