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Journal of Agro Complex

joac
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Published by Universitas Diponegoro

ISSN : - EISSN : 25974386 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Journal of Agro Complex (JOAC) is an open access, peer-reviewed journal that considers articles on all areas of agricultural sciences (Agro complex). Research areas include : plant growth and development, plant production, plant improvement, plant protection, plant ecology, plant physiology, seed production and certification, integrated farming, sustainable agriculture, agribusiness and agro industry.

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Articles 12 Documents

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Search results for , issue "Vol 2, No 2 (2018)" : 12 Documents clear

Pertumbuhan dan produksi bayam merah (Amaranthus tricolor L.) dengan pemberian pupuk kandang dan giberelin Dedytha Nur Annisa; Adriani Darmawati; Sumarsono Sumarsono
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The research aimed to study the growth and yield of red spinach as affected by manures and giberelin. This research used monofactor experiment with Completely Randomized Design consist of 7 treatments and 3 replications. The treatments were T0 (control), T1 (GA3 100 ppm and cow manure 6,250 kg / ha), T2 (GA3 200 ppm and cow manure 12,500 kg / ha), T3 (GA3 300 ppm and cow manure 18,750 kg / ha), T4 (GA3 100 ppm and goat manure 3,750 kg / ha), T5 (GA3 200 ppm and goat manure 7,500 kg / ha), T6 (GA3 300 ppm and goat manure 11.250 kg / ha). Observed parameters were plant height, leaf number, leaf area, wet weight and dry weight. The data were processed by analysis of variance and further test with Duncan Multiple Range Test and Contrast Test. The best plant height growth was in the treatment of 18,750 kg / ha of cow manure and 300 ppm gibberellin resulted plant height of 21.11 cm. The highest number of leaves in the treatment of 11,250 kg / ha of goat manure and 300 ppm gibberellin resulted 21.44 leaves. Leaf area (528.79 cm2), fresh weight (68,50 g), and best dry weight (26.97 g) were achieved at 7,500 kg / ha goat manure treatment and 200 ppm giberelin. It was concluded that the application of manure and gibberellin increased plant growth (plant height, leaf number, leaf area), and crop production (fresh weight and dry weight) of red spinach. The combination of goat manure and giberelin was better than cow manure on all parameters. Goat manure of 7,500 kg / ha and 200 ppm gibberellin increased growth and production of red spinach on leaf area parameters, fresh weight, and dry weight. Keywords : red spinach, manure, gibberellin

Perkecambahan benih dan pertumbuhan bibit jarak pagar (Jatropha curcas Linn.) dengan invigorasi menggunakan zat pengatur tumbuh pada periode simpan yang berbeda Indah Puspitaningtyas; Syaiful Anwar; Karno Karno
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Jatropha curcas is a plant that is used as an alternative energy for fossil fuel replacement because of it’s high oil content. Jatropha curcas seeds have 30-40% oil content. The purpose of the study was to improve the seed quality and to enhance seedling growth of Jatropha curcas after storage using plant growth regulator. This study used factorial design based on Completely Randomized Design with two factors and 3 replications. The first factor was seed storage which consist of 2 levels : A1 = seed storage in 2015, A2 = seed storage in 2016. The second factor was plant growth regulator level which consists of 6 levels : B1=GA+NAA 0 ppm, B2= GA+NAA 20 ppm, B3= GA+ NAA 40 ppm, B4= GA+NAA 60 ppm, B5 = GA+NAA 80 PPM, B6 = GA+NAA 100 ppm. Parameters measured were seed germination, vigor index, growth rate, plant height and the number of leaves. The data were analyzed statistically by analysis of variance and followed by Tukey test and Polynomial Orthogonal. The result showed that seed germination, vigor index and growth rate were significantly affected by storage treatment and invigoration using plant growth regulator treatment. Invigoration using auxin and gibberellic acid 40 ppm has the highest result of seed germination, vigor index and growth rate. There was no influence of seed storage and invigoration with plant growth regulator treatment on plant height and number of leaves. Keywords : Jatropha curcas, invigoration, plant growth regulator.

Uji efektivitas kombinasi pupuk bio-slurry dengan pupuk npk terhadap pertumbuhan dan produksi dua varietas padi sawah (oryza sativa L.) Ahmad Khanafi; Yafizham Yafizham; Didik Wisnu Widjajanto
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The objective of this research was to investigate the effectiveness of combination of bio-slurry fertilizer and NPK fertilizer on the growth and production of two varieties of rice. The experiment was assigned in a completely randomized design of factorial pattern. The first factor was the combination of bio-slurry and NPK fertilizer that consisted of P0 = no added fertilizer (control) 0 ton/ha, P1 = NPK fertilizer 550 kg/ha (165 kg N, 33 kg P, 45 kg K); P2 = bio-slurryfertilizer 2.3 tons/ha (45 kg N, 14 kg P, 23 kg K) and NPK fertilizer 400 kg/ha (120 kg N, 24 kg P, 32 kg K); P3 = bio-slurryfertilizer 4.6 tons/ha (90 kg N, 28 kg P, 46 kg K) and NPK fertilizer 250 kg/ha (75 kg N, 15 kg P, 20 kg K); P4 = bio-slurry fertilizer 5.9 tons/ha (115 kg N, 36 kg P, 59 kg K) and NPK fertilizer 100 kg/ha (30 kg N, 6 kg P, 8 kg K); and P5 = bio-slurryfertilizer 8.5 tons/ha (165 kg N, 52 kg P, 85 kg K). The second factor was varieties of rice that consisted of V1 : IR-64 and V2 : Ciherang. Each treatment was repeated three times. Parameters observed were plant height, number of tillers, weight of 1.000 grains, and rice production. Data were analyzed using ANOVA and continued with Duncan’s Multiple Range Test (DMRT). The results showed that the combination of bio-slurry fertilizer and NPK fertilizer were significantlyaffect (p <0.05)all observation parameters, while varieties of wetland rice did not show significant effect on all observation parameters (p<0.05). The application of bio-slurry fertilizer in single treatment or in either combination with NPK fertilizer had the same result with the treatment of NPK fertilizer on the growth and yield of rice. Keywords: rice, fertilizer combination, bio-slurry fertilizer, NPK fertilizer

Peran kelompok tani terhadap usahatani padi di Kecamatan Sale Kabupaten Rembang Fitra Margi Nugroho; Sriroso Satmoko; Karno Karno
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Farming development through farmer groups is an effort to accelerate the improvement of farmers' welfare. The purpose of this research was to analyze the role of farmer groups as learning class, cooperation vehicle, and production unit in influencing farmer behavior, access of production facilities, application of Integrated Crop Management (ICM) and farming profit. The research population was members of farmer groups in Kecamatan Sale Kabupaten Rembang who have irrigated land with an area of 0.2-0.5 Ha. Determination of sampling was done by using purposive random sampling method with total sample of 276 farmers. Interviews with questionnaires were used as data collection methods. Data were analyzed using path analysis to know the relationships between variables. Results of research indicated that role of farmer group as study class, cooperation vehicle, and production unit had an effect to farmer behavior. The role of farmer groups as a vehicle for cooperation, production unit and farmer behavior had an effect on access production facilities. Behavior of farmers and access to production facilities affected the application of ICM. The application of ICM had an effect on the profit of farming. R/C Ratio of paddy farming in Sale District, Rembang Regency was equal to 1,23. Keywords : farmer group; farmer behavior; application of ICM

Penambahan lama penyinaran dengan perbedaan jam dan jumlah hari pada tanaman krisan (Chrysanthemum sp.) terhadap pertumbuhan dan bobot tanaman Hanafi Girindra Pratama; Sutarno Sutarno; Adriani Darmawati
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The aims of the research were to analyze light addition at the night to chrysanthemum plant with a difference irradiation length of hours and total of days on growth and weight of plant. This irradiation factor in chrysanthemum plants can affect vegetative growth. The light came from TL lamps with 23 watt of power. The experimental design used was the split block design with the main plot was long irradiation in hours: 1 hour (P1); 2 hours (P2); 3 hours (P3) and 4 hours (P4). While the sub plot was an extension of light in the case of 21 days (H1); 28 days (H2); 35 days (H3) and 42 days (H4). Replication was done 3 times. The results showed the use of irradiation applications above 3 hours and 42 days increased plant height, leaf number, fresh and dry weight of plant. Keywords : Chrysanthemum, irradiation, light.

Pengaruh keragaman jamur Metarhizium anisopliae terhadap mortalitas larva hama Oryctes rhinoceros dan Lepidiota stigma Syafira Athifa; Syaiful Anwar; Budi Adi Kristanto
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The research was conducted to evaluate the effect of variant of M. anisopliae on mortality of Oryctes rhinoceros and Lepidiota stigma. Variants ofM. anisopliae to be used were Karimun Jawa, Semarang and Magelang (host O. rhinoceros), and UGM (host L. stigma). The research was arranged in factorial experiment withcompletely randomized design, two factors and three replications.The first factor was type variant of M. anisopliae (V0= control, V1= variant UGM, V2= variant Karimun Jawa , V3= variant Semarang , V4 = variant Magelang), the second factor was type of pest (H1 = larva O. rhinoceros, H2 = larva L. stigma). The results showed that each variant of M. anisopliae had the same ability to control O. rhinoceros and L. stigma in both mortality, spore density, and LT50. O. rhinoceros has higher mortality and spore density than L. stigma, but LT50 both pests were the same. The interaction between O. rhinoceros and M. anisopliae gave the highest mortality, spore density, but the same LT50. Keywords : M. anisopliae, L. stigma, O. rhinoceros, mortality, spore density, LT50.

Pengaruh lama pemeraman dan dosis pupuk organik cair berbasis mol sayur dan buah terhadap pertumbuhan dan produksi tomat ceri (Solanum lycopersicum var. cerasiforme) Farah Athaya Widha; Susilo Budiyanto; Endang Dwi Purbajanti
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

This research aimed to observe the response of different incubation period and dosage of liquid organic fertilizer (LOF) based on vegetable and fruit local microorganism on cherry tomato growth and production. This research was conducted at Operational Greenhouse, Balai Benih Pertanian Kota Semarang Gunung Pati, Semarang. The research was conducted by 3x3 factorial experiments with 3 replications. The first factor was 6, 12, 18 days of incubation period and the second factor was 120, 240, 360 ml/plant dosage of LOF. The observed parameters were fruit N uptake, plant height, fruit diameter and fruit fresh weight. Results of study showed that both treatments had no significant effect on fruit diameter and fruit fresh weight caused by lack of P in LOF so that the overall fruit production was not optimum. Interaction between both treatments showed significant effect on fruit N uptake when on short incubation period, the dosage used was higher and vice versa. Six days of incubation with 240 ml/plant dosage gave the highest efficiency on improving fruit N uptake. Incubation period has no significant effect but the dosage of 360 ml/plant significantly gave optimum effect on plant height in comparison with dosage of 120 and 240 ml/plant. This research can be concluded that LOF with 6 days of incubation with dosage used between 240-360 ml/plant was efficient to improve growth of cherry tomato plant and addition of fertilizer was needed to improve production of cherry tomato. Keywords : Cherry tomato, LOF incubation period, LOF dosage

Efek xenia dan metaxenia pada persilangan tomat ranti dan tomat cherry Natalia Indah Widyasmara; Florentina Kusmiyati; Karno Karno
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Cherry tomato have various colour, shape and nutritious fruit. The aim of this research was to make population for genetic selection and to know about xenia and metaxenia effect on tomato crossing. The crossing was assigned in dialel crossing combination with Ranti tomato, Cherry tomato var. Grape, Red Pear and Indigo Rose as a crossing parents. The crossing combination was Ranti x Grape, Ranti x Red Pear, Ranti x Indigo Rose, Grape x Ranti, Grape x Red Pear, Grape x Indigo Rose, Indigo Rose x Grape, Indigo Rose x Ranti, Indigo Rose x Red Pear. Parameter measured were crossing ability, fruit set ability, fruit ripening age, seed number and fruit shape. The result showed that Grape x Red Pear crossing combination had the highest crossing ability and Indigo Rose x Red Pear had the highest fruit set ability. Xenia and metaxenia effects were showed in fruit ripening age, seed number and fruit shape. Genotype of Red Pear x Indigo Rose was found as superior genotype candidate for ripening age, seed number and had highest percentage of fruit shape alteration. Keywords : Hybridization, xenia, metaxenia, tomato, cherry tomato.

Respon pertumbuhan dan produksi padi beras merah (Oryza nivara) terhadap cekaman kekeringan pada fase pertumbuhan berbeda dan pemupukan nanosilika Rita Sugiarto; Budi Adi Kristanto; Dwi Retno Lukiwati
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The purpose of this research was to analyze the response of growth and production of red rice (Oryza nivara) under drought and nanosilica fertilization condition. This research was conducted in Greenhouse and Laboratory of and Plant Physiology and Breeding of at Faculty of Animal and Agricultural Sciences, Diponegoro University, Semarang from April to July 2017. The research was arranged using completely randomized factorial design. The first factor was drought stress (control, drought 20-35 DAP (Days After Planting), 40-55 DAP and 55-70 DAP). The second factor was the use of nanosilika fertilizers (without nanosilika, with nanosilica). The data were analyzed by anova and followed by Duncan’s Multiple Range Test (DMRT). The results showed that the drought stress during tiller production stage decreased the total number of tillers, productive tillers and grain weight per clump, but not in weight of one thousand seeds. Drought stress during flowering stage and seed filling only decreases the weight of one thousand seeds. Application of nanosilica increases the number of productive tillers and the weight of grain per hill. There was no interaction between drought stress treatment and nanosilika fertilization. Keywords: red rice, production, drought, nanosilica.

Persilangan 4 varietas kedelai (Glycine max L.) dalam rangka perakitan kedelai tahan kering Frendi Heri Utomo; Budi Adi Kristanto; Florentina Kusmiyati
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The purpose of this research was to study dialel crossing of 4 soybean varieties in order to get drought resistant varieties. The research used Completely Randomized Design with six crossing combination : Dering x Grobogan, Grobogan x Dering, Dering x Detam, Detam x Dering, Dering x Devon, and Devon x Dering. Each combination was repeated five times. Parameters observed were percentage of fertilization, number of seeds in pods, long of pods, weight of 10 seeds. Parameters were analyzed descriptively and heterosis was calculated. The research results showed that crossing between dering and devon had the highest percentage of fertilization. Crossing between dering and grobogan improved number of seed in pod, long of pods and weight of 10 seeds. The highest heterosis of seed number in pod, long of pods and weight of 10 seeds were resulted from crossing dering x devon, Dering x Grobogan, Grobogan x Dering, respectively. Keywords : Crossing, genotype soybean, fist population

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