ABSTRACT Lettuce (Lactuca sativa L.) is a vegetable that has a high selling value but is indicated to be polluted by pesticides so it needs to be mitigated by cultivating organic. This study aims to determine the response of growth and yield of several varieties of lettuce to various compositions of soil minerals and organic matter in two planting periods. The experimental method was arranged …
ABSTRACT The shallot plant has many benefits, namely as a seasoning for cooking and medicine. The production of shallot plants in Riau Province is still relatively low. The factor causing the low production of shallot plants is soil fertility. Efforts that can be made to improve soil fertility are by adding organic matter and liquid organic fertilizer (LOF). The study aims to determine the effe…
ABSTRACT White frangipani plant is an ornamental plant that is currently being much developed. The main problem in the development of white frangipani is sexual reproduction has a weakness, some of them take a long time, and genetic differences with the parent. So, the vegetative propagation as the alternative. One way of vegetative propagation by cuttings can be done, and the length of the cu…
ABSTRACT This study aims to determine the effect of applying N fertilizer and biofertilizers, their interaction on growth and yield of lowland rice, healing doses of N fertilizer and biofertilizers and the best interaction on growth and yield of lowland rice. This research was conducted for four months, starting from April and completed in July 2022. This study used a Complete Randomized Desig…
ABSTRACT Sweet corn (Zea mays saccharata Sturt.) Sweet corn production from year to year decreased. One solution that can be done is to take advantage of the residual effect of fertilization on the first planting for the second crop. This condition occurs because of the high cost of producing sweet corn, which causes farmers to be reluctant to cultivate sweet corn. This study aims to determine …
ABSTRACT Corn (Zea mays L.) is the second important food crop after rice and some areas still use corn as a staple food in Indonesia.One of the problems faced in corn cultivation is the attack of the corn armyworm (Spodoptera frugiperda J. E. Smith). The corn armyworm S. frugiperda is an important pest in corn cultivation, because it can cause a decrease in production of 5-20% when the larvae …
ABSTRACT Podsolic has low fertility with has low pH, availability of P, Ca, Mg, and other macro nutrients impact to decrease productivity of sweet corn. The provision of AMF in order to support increasing nutrients, and dolomite as a source of Ca and Mg nutrients and increase soil pH has an impact on increasing other nutrients so as to increase the growth and yield of sweet corn plants needs t…
ABSTRACT Okra plants are difficult to branch so that the production is not much, it is necessary to do better cultivation techniques, namely apical shoot pruning techniques and NPK fertilizer which has macro and micro nutrients. This study aimed to see the effect of the interaction of apical shoot pruning time and NPK fertilizer on growth and production and to obtain the best apical shoot prun…
ABSTRACT The research aimed to increase the production of maize on marginal soil which have low soil fertility. The addition of NPK fertilizer and palm oil mill sludge compost with EM4 activator is an alternative way to improve the fecundity of marginal soil. The research was carried out in the experimental garden of the Faculty of Agriculture, Riau University from March to June 2021. The fiel…
ABSTRACT This study was to determine phenotypic and genetic relationship of corn seed development and yield components of several corn genotypes grown with various rates of potassium fertilizer so that it can be determined which characters can be used for indirect and direct selection for improving various yield components in the corn population. This study was conducted using a split-plot des…
ABSTRACT This research aims to determine the effect of the interaction of manure and NPK Grower fertilizer as well as each factor and to obtain the best combination of treatments. This research was carried out in the Experimental Garden of the Agriculture Faculty, Riau University, from August 2021 until October 2021. This research was conducted experimentally using a factorial Completely Rando…
ABSTRACT This research aims to screen and observe the antagonicity of endophytic fungi isolates from siamese citrus and to obtain the highest antagonicity of endophytic fungi isolate which are potential as biological agents against Phytophthora sp., the cause of stem rot disease on citrus plants. The research was conducted at the Laboratory of Plant Protection, Faculty of Agriculture, Riau Uni…
ABSTRACT Efforts to increase the production of shallots can be done by increasing the area of harvested land. The availability of relatively fertile land in Riau is increasingly limited so that alternative land expansion is by utilizing marginal land. One of the marginal lands in Riau is the Dystrudepts. Dystrudepts which are used has problems with soil chemical properties, those problems of D…
ABSTRACT This study aims to determine the interaction between vermicompost and defoliation and the main effect of each on the growth and yield of Okra (Abelmoschus esculentus L.). This research carried out at the Experimental Farm of the Faculty of Agriculture, Riau University, using a Completely Randomized Design consisting of 2 factors, namely: Factor I was the dose of vermicompost. Con…
ABSTRACT The cultivation of Siamese orange (Citrus nobilis L.) in Kampar Regency has the main obstacle, namely the attack of diplodia disease caused by Botryodiplodia theobromae causing the plants to die so that citrus production decreases. Conventional plant propagation generally takes a long time and often experiences technical problems in the field. In vitro culture techniques on aseptic me…
ABSTRACT Okra is africa origin tropical plant and widely cultivated in various tropic and subtropic countries. Purpose of this study to determine effect of potassium on okra growth and productivity at several shading levels, and obtain the best level of pottasium in okra culvatio on Riau Province. The study was conducted in the Horticulture UPT Agriculture Faculty, Univesity of Riau, on March-…
ABSTRACT Shallots caterpillar (Spodoptera exigua Hubner) is the main pest that attacks shallot plants. Spodoptera exigua can be controlled using insecticides from tobacco leaves (Nicotiana tabacum L). This research was carried out experimentally using a completely randomized design (RBD) method consisting of 6 treatments and 4 replications, so that 24 experimental units were obtained. Each exp…
ABSTRACT The low productivity of shallots in Pekanbaru City is due to fungal infections. The purpose of this study was to determine the types of fungi that cause disease and the intensity of their attacks on shallot plants in Pekanbaru City. This study consisted of 4 stages including sampling, collection and storage of sample plant leaves with disease symptoms, isolation and purification o…
ABSTRACT The purpose of this research was to obtain endophytic fungal isolates from upland rice plants with the best antagonistic ability in inhibiting the growth of Pyricularia oryzae. This research consisted of 7 stages including sampling, isolation and purification of endophytic fungi and P. oryzae, hypovirulence test of endophytic fungi; antagonistic test of endophytic fungi against P. ory…
ABSTRACT This study aims to determine the single factor of petroganic organic fertiliser, the single factor of NPK phonska fertiliser and the interaction of petroganic organic fertiliser with NPK phonska and get the best dose. The research was conducted at the Faculty of Agriculture, Riau University for three months starting from January to March 2022. The first factor was the dose of petrogan…