Jurnal Agroekoteknologi
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RESPONS TANAMAN KACANG HIJAU (Vigna radiata (L.) Wilczek) YANG DIBERI ANTIOKSIDAN DARI EKSTRAK KUNYIT TERHADAP CEKAMAN KEKERINGAN
Full text linkMungbean is one of important sources of vegetable protein in Indonesia. Extensification through the utilization of drylands is very potential to increase mungbean production. The study aimed to find out the response of mungbean given antioxidants of turmeric extract to drought stress. The study was conducted in Kuningan West Java in 2019. The study was designed using a randomized block design with factorial patterns and three replications. The first factor was the concentration of antioxidant of turmeric extract, namely: 0%, 1%, and 1.5%, and the second factor was soil water content namely: field capacity, 75% field capacity, and 50% field capacity. The results showed that the yield of seeds remained high even though mungbean experienced mild stress (75% field capacity) by administering antioxidant of turmeric extract as much as 1% or 1.5%. Likewise, the number of seeds and relative water content of leaves remained high with the same treatment. Meanwhile, plant height, leaf area, and number of pods were increasingly reduced by decreasing the level of soil water content, on the other hand, antioxidants increased the number of filled pods
UJI BEBERAPA KONSENTRASI EKSTRAK TEPUNG AKAR TUBA (Derris elliptica Benth.) TERHADAP MORTALITAS LARVA Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) HAMA PADA JAGUNG MANIS
Full text linkCorn is one of the important food crops besides rice. The variety of corn that is in great demand by the public is sweet corn (Zea mays saccharata Sturt). The main pest that often attacks sweet corn plants is Helicoverpa armigera Hubner. Pest control can be carried out using botanical insecticides of tuba roots (Derris elliptica benth.). This research aims to obtain a concentration of tuba root flour extract which was effective against Helicoverpa armigera Hubner. The research was conducted at the Plant Pest Laboratory and Organic Chemistry and Natural Material Laboratory, Faculty of Engineering, Riau University. It was started from January to March 2020. This research used a completely randomized design (CRD) with five treatments and four replications so that 20 experimental units were obtained. The treatments given were various concentrations of tuba root flour extract, namely: 0%, 0.25%, 0.50%, 0.75% and 1%. The results showed that the difference in the concentration of tuba root flour extract had a significant effect on killing Helicoverpa armigera larvae. The concentration of 0.75% is effective in controlling Helicoverpa armigera larvae because it has been able to kill Helicoverpa armigera by 85% with the fastest initial death time at 3.75 hours, lethal time 50 at 17.00 hours after application.
PENENTUAN WAKTU TANAM PADI GOGO BERDASARKAN NERACA AIR LAHAN DI KABUPATEN ROKAN HULU
Full text linkEspecially in Rokan Hulu Regency, the low productivity of upland rice is caused by the improper planting time. Land dryness often occurs as a result of incorrectly predicting climate which in turn hurts crop yields. This research was conducted to determine the level of groundwater availability based on the analysis of the land water balance and to determine the planting time of upland rice in the Rokan Hulu Regency. The method used in this research is a survey method. The primary data consisted of the water content of field capacity, permanent wilting point, and bulk density. Location of the soil sampling consisted of seven Homogeneous Land Units (SLH) resulted from overlay of soil type map, administrative map, dryland agricultural map using the Geographic Information System technique. Secondary data (climate period 1990-2019) were obtained from Balai Wilayah Sungai Sumatera III. Land water balance analysis was performed using the Thornthwaite-Matter methods. The data obtained were analyzed using descriptive statistics to explain the period of surplus and deficit in groundwater, as well as for determining the planting time for upland rice based on soil water content and plant water needs per growing period at each SLH. The results of the research showed that the Rokan Hulu regency was classified as a wet area with an annual rainfall of 2,751.1 mm (Oldemann C1). Soil water content is classified as very sufficient criteria every month, both topsoil and bottom layer in the range of January-May and September-December. However, in the range of June-August, the soil water content varied at each SLH. Upland rice planting (Inpago Varieties) can be done in January, May, and September in SLH 1, SLH 2, SLH 3, SLH 4, SLH 5, and SLH 6, while in SLH 7 upland rice planting is carried out in January and September. Planting using local varieties can be done in February and September in SLH 1, SLH 2, SLH 3, SLH 4, SLH 5, and SLH 6, while in SLH 7 planting can be done in March and September. Alternating planting can also be done by planting inpago varieties in February and local varieties in September
RETARDED GROWTH OF LOWLAND RICE IN SALINE SOIL INOCULATED WITH NITROGEN-FIXER AZOTOBACTER
Full text linkLow-land rice (Oryza sativa L.) cultivation in saline soils face some constraints include nitrogen availability. Saline-resistant nitrogen fixing bacteria Azotobacter are expected to increase supply nitrogen in saline soils. The objectives of the study were to determine the effect of liquid inoculant concentration of two Azotobacter isolates on early vegetative growth of lowland rice grown in potted saline soil. The greenhouse trial design was a randomized block design with seven treatments and four replications. The treatments were combination of isolates and Azotobacter liquid inoculant concentrations in single and mixed inoculation. The results showed that all plants experienced chlorosis and stunt due to high Electrical Conductivity. Inoculation of different isolates and concentrations did not influence the growth of lowland rice in soil with high EC at the end of experiment. Therefore, neither isolates nor concentration of Azotobacter could improve retarded-growth of lowland rice in saline soil
PENGARUH PEMBERIAN TINGKAT KONSENTRASI PUPUK URINE KELINCI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG (Zea mays L.) PADA VARIETAS YANG BERBEDA
Full text linkThis research aimed to know the effect of giving urine concentrations of rabbits and different varieties on the growth and yield of maize. The research was conducted on land owned by CV Hardian Cipocok Jaya District Serang City Banten Province from November 2019 until February 2020. The research used a Randomized Completely Block Design with two factors. The first factor was the concentration of rabbit urine fertilizer which consisted of three levels, namely: 20 ppm, 30 ppm, and 40 ppm. The second factor was the variety which consisted of 3 levels, namely indurata, pulut and black aztec. The result showed that rabbit urine fertilizer with a concentration of 30 ppm showed better results on plant height parameters aged 14 days after planting (28.11 cm), 21 days after planting (46.33 cm), 28 days after planting (71.22 cm), 35 days after planting ( 103.24 cm), 42 days after planting (131.87 cm), 49 days after planting (154.37 cm), the number of leaves 14 days after planting (2.89 pieces) and the number of leaves at 21 days after planting (4.22 strands). Indurata variety showed better results on the parameter of the number of leaves aged 14 days after planting (2.67 pieces). There was no interaction between treatment rabbit urine fertilizer at various levels of concentration with various varieties of maize except for plant height parameters aged 14 days after planting and 21 days after planting and the number of leaves aged 14 days after planting and 21 days after planting
UJI EFEKTIVITAS EKSTRAK DAUN TALAS BENENG (Xanthosoma Undipes K.Koch) SEBAGAI PENGENDALI JAMUR Fusarium oxysporum PADA TANAMAN PISANG SECARA IN VITRO
Full text linkFusarium is a phatogenic fungy that causes wilting in banana plants. One of alternative in controlling Fusarium oxysporum fungy is by using Botanical Pestiside on of them is talas beneng. This plants is local plants that grows wild around Karang Mountain, Pandeglang, Banten. A research to determine the effectiviness extract of talas beneng leaf (Xanthosoma undipes K.Koch) as fungy control Fusarium oxysporum in banana plants in vitro. The research used randomized completely design with five treatments and five replication. The treatments is consisting of talas beneng leaf extract 0%, 5%, 5,5%, 6%, dan 6,5%. Observation was conducted after incubation for nine days at room temperature. The parameters observed was inhibition Fusarium oxysporum growth with indicated size of the diameter mycelium colony, inhibition percentage of mycelium and inhibits and thickness mycelium . The result of the talas beneng leaf extract showed that there was no difference in the concentration of the talas beneng leaf extract on the diameter of mycelium Fusarium oxysporum, but the extract of talas beneng leaf effective for inhibits and thickness myscelium density in mycelium fungi in vitro with concentration is 6%
PENGARUH PEMBERIAN BIOCHAR TANDAN KOSONG KELAPA SAWIT DAN MIKORIZA TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG MANIS (Zea mays sacharrata L.) DI TANAH ULTISOL
Full text linkThe main problems of sweet corn cultivation in Ultisol medium are sour reactions, Al saturation and height P fixation, as well as low availability macro, micro nutrients especially Mo and Si. The provision of empty oil palm biochar is able to increase the growth and yield of sweet corn crops because the Biochar TKKS contains macro and micro nutrients such as N, P, K, Ca and Mg and also as a useful soil material to improve physical, chemical and biological properties of soil to increase pH, C-Organic, Ca, K, Mn, P, and mycorrhiza application be able to increase the availability of P so the fixation of P can be suppressed. The purpose of this research to learn the main influences of the Biochar TKKS, the main influence of mycorrhiza and the interaction of the growth and yield of sweet corn in the Ultisol medium. The experiment was conducted in the Experimental farm of the Agriculture Faculty, the University of Riau from May to August 2019.Research of experiments in the form of 4×3 factorial using Complete RandomDesign. The Biochar TKKS consists of four levels (0, 25, 3.75, 50 g polibag-1) asthe first factor, mycorrhiza consists of three levels (0, 10, 15 g plant-1) as thesecond, each repeated three times. The results of the study show that giving of the biochar TKKS dose 3.75 g polibag-1 and mycorrhiza dose 15 g plant-1 in theUltisol medium increased on plant height, straw weight, cob length and number of rows of each cob compared to no treatment
EKSPLORASI DAN KARAKTERISASI BAKTERI RHIZOBIUM ASAL TANAMAN Mucuna bracteata DI TANAH GAMBUT
Full text linkThe efficiency of fertilizing N on oil palm plants on peatlands in several companies isdone by planting legume cover crop, one of which is Mucuna bracteata. This plantcan form root nodules because it can symbiosis with rhizobium bacteria which willmake fixation of N2 in the air so that the bound N elements can be utilized by plants. This bacterium grows naturally on legume cover crop. This study aims to explore and characterize adaptive rhizobium bacteria in peatlands. The location of sampling is done at PT. Jatimjaya Perkasa, Kubu District, Rokan Hilir Regency. Sampling of root nodules by stratified random sampling. The results obtained by eight bacterial isolates that have relatively similar macroscopic and microscopic characteristics and belong to rhizobium based on the YEMA + CR and YEMA + BTB tests.Keywords: Peat soil, Oil palm, Legume cover crop, Rhizobiu
UJI BEBERAPA KONSENTRASI EKSTRAK TEPUNG DAUN SIRIH HUTAN (Piper aduncum L.) TERHADAP HAMA TANAMAN JAGUNG (Spodoptera frugiperda J. E. Smith) DI LABORATORIUM
Full text linkCorn (Zea mays L.) is the second staple food after rice in Indonesia. The main problem in corn cultivation is the attack of Spodoptera frugiperda J.E. Smith. The S. frugiperda pest can cause a loss of 73% yield, if the affected plant population reaches 100%. The control using botanical pesticides extracts of forest betel leaf (Piper aduncum L.) is an alternative for controlling S. frugiperda. This study aimed to obtain an effective concentration of forest betel leaf powder extract to control S. frugiperda. The research was carried out at the Plant Pest Laboratory and Experimental Garden, Faculty of Agriculture, Riau University. This study was conducted from February 2020 to April 2020. This study used a completely randomized design (CRD) with five treatments and four replications in order to obtain 20 experimental units. The treatments given were the concentration of forest betel leaf powder extract 0 g.l-1 water, 25 g.l-1 water, 50 g.l-1 water, 75 g.l-1 water and 100 g.l-1 water. The results showed that the concentration of 75 gl-1 water was an effective concentration to control S. frugiperda with an initial time of death of 11.75 hours, lethal time of 50 at 43.25 hours after application, the highest daily mortality on the second day at 52.5% and total mortality is80% in the 5 days after application
PERTUMBUHAN HANJELI (Coix lacrima-jobi L.) PADA KEPADATAN POPULASI BERBEDA DI LAHAN SUB OPTIMAL
Full text linkResearch was conducted in Limau Manis, Padang City of West Sumatra. Theexperimental design used was a non-factorial randomized block design. Job’s tears used in this study is a cultivar of beras. The research objective was to determine the effect of various levels of population density on job’s tears growth in sub-optimal area. The density of the population used in this study is that A1 = 62,500 plants / ha (spacing of 40 x 40 cm), A2 = population of 50,000 plants / ha (spacing of 50 x 40 cm), A3 = 40,000 plants / ha (spacing 50 x 50 cm), A4 = 33,333 plants / ha (spacing 50 x 60 cm), A5 = 28,571 plants / ha (spacing 50 x 70 cm), A6 = 25,000 plants / ha (spacing 50 x 80 cm), A7 = 22,222 plants / ha (spacing 50 x 90 cm), and A8 = 20,000 plants / ha (spacing 50 x 100 cm). The results showed that the density of the plant population that was too dense had an effect on the decline in several growth components but showed the highest average ILD value. Whereas treatment with population density that was not too high or by using spacing that was tenuous gave the best effect on the variables of plant height, number of tillers and number of leaves. Further observations are needed to determine the effect of the treatment given on the yield components