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AGRIVITA, Journal of Agricultural Science
Published by Universitas Brawijaya
ISSN : 01260537     EISSN : 24778516     DOI : https://doi.org/10.17503
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
AGRIVITA Journal of Agricultural Science is a peer-reviewed, scientific journal published by Faculty of Agriculture Universitas Brawijaya Indonesia in collaboration with Indonesian Agronomy Association (PERAGI). The aims of the journal are to publish and disseminate high quality, original research papers and article review in plant science i.e. agronomy, horticulture, plant breeding, soil sciences, plant protection and other pertinent field related to plant production. AGRIVITA is published three times per year. The Journal has been indexed in SCOPUS, Scimago Journal Ranks (SJR), Emerging Source Citation Index ( ESCI-Web of Science), EBSCO, ProQuest, Google Scholar and others international indexing. AGRIVITA is accredited first grade (Sinta 1/S1) for five years (2018-2023) based on Decree No: 30/E/KPT/2018 by Ministry of Research, Technology and Higher Education (Ristek Dikti), The Republic of Indonesia. We accept submission from all over the world. All submitted articles shall never been published elsewhere, original and not under consideration for other publication.
Arjuna Subject : -
Articles 916 Documents
 15   16   17   18   19 
THE GROWTH AND YIELD OF PADDY CIHERANG PLANTED IN DRY AND RAINY SEASON AND FERTILLIZED WITH ORGANIC AND INORGANIC FERTILIZERS Santosa, Mudji; Suryanto, Agus
AGRIVITA, Journal of Agricultural Science Vol 37, No 1 (2015)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

The study in order to know the growth and yield  of paddy Ciherang planted in dry and rainy season and applicated with organic and inorganic fertilizers  was conducted in paddy soil at  Ngujung . Batu . East Java, with the height areas  is  900 m above sea level , the average of temperatureis  is  220 C and  a soil type is  Andosol . This study is conducted at June up  to October 2013 ( dry season) and February up to May 2014 ( rainy season) and uses a Randomized CompleteBlock Design for  arranging the treatments of fertilizers i.e. : ( a) 100 kgs  N / ha, 50 kgs P2O5 / ha  and 70 kgs  K2O/ha . ( b ) 50 kgs N /ha ,  25 kgs P2O5 /ha  and 35 kgs K2O/ha  ; ( c ) Cow manure 20 tons /ha ;and (d ) Cow manure 10 tons/ha . The field experiment was repeated 3 ( three ) times . The growth and yield of paddy Ciherang planted in dry season higher than planted in wet. Plant height of paddy Ciherang in dry season (years of 2013) is  86.9 cm tall , Leaf Area Index is  4.18 ,  time of harvesting 125 dap,  grains per panicle is 134.2 , 1000 grains weight is 26.1 g and the grains yield  is  984.2 g/m2 (9,84 tons/ha). The same characterstics  of paddy  Ciherang which measured in rainy season (years of 2014) are 87.7 cm tall , LAI  3.70,  time of harvesting 105 dap,  the number of tillers per hill 14.2,  grains per panicle  90.0 , 1000 grains weight  25.8 g and the grains yield 481,8 g/m2 (4,81 tons/ha). Key words : Fertilizers of organic and inorganic ,  rice Ciherang and   the cow manure
MECHANISM OF INFECTION Spodoptera litura Nucleopolyhedrosis Multiple Virus (SpltMNPV) ON MIDGUT EPITHELIAL CELL ARMY WORM (Spodoptera litura) Observed by TEM Asri, Mahanani Tri; Chaelani, Siti Rasminah; Rahardjo, Bambang Tri; Sumitro, Sutiman Bambang
AGRIVITA, Journal of Agricultural Science Vol 35, No 1 (2013)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Spodoptera litura is one of  agricultural crop pests. They are resistant to chemical insecticides. One of arternate biological control is Spodoptera litura Nucleopolyhedrosis Multiple Virus (SpltMNPV) Penelitian ini dilakukan untuk mengetahui bagaimana mekanisme SpLtMNPV dalam menginfeksi sel epithel midgut larva S. The research was conducted to determine how SpltMNPV infected midgut epithelial cells of S. litura secara in vitro . litura larvae in vitro.  The mechanism of infection was observed by a transmission electron microscopy (TEM).  The result of this observation showed that infecting midgut cell by  SpltMNPV involved 5 phases, they are, 1) the attachment of  SpltMNPV at the membrane of suitable host, 2) the penetration, formation of channels and release of protein envelope, 3) the biosynthesis of virus components in the cell nucleus, 4) the assembling of virus components, and 5) the releasing of MNPV/multiplenucleocapsid through budding. Keywords: mechanisms of infection, Spodoptera litura multiple nucleopolyhedrosis virus, midgut army worm larvae cells.
A Study of Using QUEFTS Model for Establishing Site Specific Fertilizer Recommendation in Maize on The Basis of Farmer Fields Wijayanto, Yagus; Prastyanto, Edy
AGRIVITA, Journal of Agricultural Science Vol 33, No 3 (2011)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Nutrient Use Efficiency (NUE) of Maize is considered low. There are two important factors  responsible for this condition: (a) uniform fertilizer recommendation, (b) lack of consideration on soil variability, Indigenous Nutrient Supply and plant nutrient needs.  A method for studying low NUE and the capability of studying these two factors are urgently required. This study used Quantitative Evaluation of Fertility on Tropical Soils (QUEFTS) model. The main aim of this study was to employ and evaluate QUEFTS model for establishing site specific fertilizer recommendation in maize on the basis of farmer fields. Due to a unique characteristic of farmer field, it may be interesting to observe the pattern of soil fertility in relation to yields.  Six farmers fields and thirty soil samples were taken and analysed in the laboratory. The results showed that QUEFTS model was a valuable tool to make fertilizer recommendation by using yields as an integrated indicator. The results also showed that QUEFTS model was a promising method for establishing fertilizer recommendation for maize. The merits of model for determining Indigenous Nutrient Supply, nutrient yield limiting factors, balanced fertilizer recommendation show that QUEFTS model is a valuable tool for site specific fertilizer recommendation.   Keywords: QUEFTS, recommendation, site specific, yield
THE RELATIONSHIP BETWEEN ALTITUDES AND THE CONTENTS OF PROTEIN, CARBOHYDRATES, LIPIDS OF PUMPKIN (Cucurbita moschata) Tjiptowibisono, Suranto; Tedianto, Tedianto; Purwanto, Edi; Sety, Prabang
AGRIVITA, Journal of Agricultural Science Vol 37, No 1 (2015)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Cucurbita moschata or pumpkin can be used as an alternative food mainly due to its carbohydrate content, and it is very easy to grow in many different habitats. The objective of this research was to evaluate the biochemical contents of C. moschata based on the altitudes and also to examine whether any relationship between the environmental conditions and protein, carbohydrate and lipid contents. Proximate analysis was used for statistical consideration of the results obtained. Chemical analysis was conducted by using mesocarp of pumpkin after cleaning, peeling and removing seeds from the center of fruits. Kjedahl and soxhlet methods were used to look at the content of protein and lipid respectively. Meanwhile, the method of difference was employed to measure the percentage of carbohydrates. Although there was no significant relationship between the biochemical contents and the environmental conditions, it was recorded that plants grown at higher altitudes with high soil pH and air temperature tended to have higher protein, carbohydrate and lipid contents, compared to that of higher soil moisture. This results showed that the highest biochemical contents of protein, carbohydrate and lipid of two varieties C. moschata were evident at the lowest altitude.Keywords: altitudes, carbohydrates, Cucurbita moschata, lipids, protein
ENHANCEMENT IN EFFECTIVENESS OF ANTAGONISTIC MICROBE BY MEANS OF MICROBIAL COMBINATION TO CONTROL Ralstonia solanacearum ON POTATO PLANTED IN MIDDLE LATITUDE Rosyidah, Anis; Wardiyati, Tatik; Abadi, Abdul Latief; Maghfoer, Moh. Dawam
AGRIVITA, Journal of Agricultural Science Vol 35, No 2 (2013)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

One of the common problems hampering the cultivation of potatoes in middle latitude is the presence of bacterium Ralstonia solanacearum commonly known to cause wilt disease, by which crop failure might be caused when serious attack occurs. The objectives of the research were to obtain the application of antagonistic microbes to inhibit the wilt disease caused by R.solanacearum and to increase the growth and yield of potato in middle latitude. The research was conducted from July to October 2012. Antagonistic microbes were used in this research to inhibit the bacterial wilt disease caused by R.solanacearum on potato planted in Bumiaji, Batu. Trichoderma viride, Streptomyces sp. and Pseudomonas fluorescens isolates were selected to be applied as treatments either singly or in combination. Randomised block design was applied on the treatment group with three replications. The results showed that the single application of Pseudomonas fluorescens or combined application of Streptomyces sp. and Trichodermaviride + Streptomycessp. was capable of extending incubation period 4 to 7 days and reducing disease incidence  44.85% - 50.09%, reducing disease intensity up to 61.23 - 72.77%, reducing the population R.solanacearum up to 7.28 - 97.88%, increasing the number of leaves and the marketable yield as much as 67.96 - 81.98%.Keywords: control, Ralstonia solanacearum, antagonistic microbes, middle latitude
Pathogenicity, Development and Reproduction of The Entomopathogenic Nematode Steinernema sp., in Mealworm Tenebrio molitor Baliadi, Yuliantoro; Sastrahidayat, Ika Rochdjatun; Djauhari, Syamsuddin; Rahardjo, Bambang Tri
AGRIVITA, Journal of Agricultural Science Vol 33, No 3 (2011)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

The pathogenicity, development and reproduction of Steinernema sp., isolate Skpr-20/Str, were studied using Tenebrio molitor. Results revealed that pathogenicity, development and reproduction were significantly influenced by nematode doses. Although the number of invading IJs increased with increasing dose, percentage penetration declined. The IJs reached adulthood within 3 days. Females laid eggs from day 4-7. All eggs remaining inside uterus develop inside the maternal body. The first female bearing endotokia matricida was observed on day 5. In a sand-based assay, nematode was more pathogenic at lower dose instead of higher ones, where optimum dose was 80 nematodes per larva and average number of progeny per female was 5438. Under crowded conditions, development proceeds to IJ stage instead of the J3. The average length and width decreased with increasing of nematode doses. The IJ produced in cadavers infested with 640 nematodes per larva was significantly smaller (492 ± 6.4 µm) than offspring from other doses. The number of days which nematodes first emerged from the cadavers decreased with increasing dose. IJ first emerged at the average of 10-13 days at high IJ densities. It is concluded that the wide experimental characteristic of EPNs is also true for Steinernema sp., isolate Skpr-20/Str.Keywords: development, emergence period, endotokia matricida, entomopathogenic nematode, isolation, pathogennicity, Steinernema sp., isolate Skpr- 20/Str
GRANULAR ENRICHED-COMPOST FROM ORGANIC WASTE CAMPUS AS SOIL CONDITIONER IN INTENNSIVE RICE FARMING SYSTEM Azizah, Nur; Prasetya, Budi; Kurniawan, Syahrul
AGRIVITA, Journal of Agricultural Science Vol 35, No 2 (2013)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

 Effort to reduce the high dependence of farmers on inorganic fertilizers is introducing compost as soil conditioner. The objectives of this research are to create enriched granular-compost (EGC) and to test its effect on nutrient availability, plant growth, and grain yield in intensive farming systems. The research was conducted in two consecutive years (2011-2012), consisting of three steps: production of EGC, incubation and field experiment. Incubation experiment was designed by randomized complete design with 5 treatments (control, 4, 6, 8, and 12 Mg ha-1), and the design of field experiment was randomized block design with 7 treatments (control, inorganic fertilizer (IF), 25% EGC + 75% IF, 50% EGC + 50% IF, 75% EGC + 25% IF, 100% EGC + 100% IF and 100% EGC). The results showed that application of EGC increased total-N and P-available 12.5% and 33% respectively on the 10th day after incubation. The highest grain yield (6.13 Mg ha-1) was gained from the application of 100% EGC + 100% IF. The productivity of rice is closely related to the number of productive panicles per plant (r = 0.507*) and percent of filled grain (r = 0.685*).  Keywords: enriched granular-compost, nutrient availability, grain yield
SOIL PHYSICAL PROPERTIES AND PRODUCTION OF UPLAND ULTISOL SOIL soelaeman, yoyo; Haryati, Umi
AGRIVITA, Journal of Agricultural Science Vol 34, No 2 (2012)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Acid upland soil in Indonesia has a great potential for agricultural development but the soil physical properties have been degraded. The use of manure and direct application of Gresik phosphate rock (PR) was an alternative to improve land productivity and crop yields. The objective of the study was to evaluate the effects of manure and P sources on soil physical  properties and yield of foods crop that was arranged on intensive cropping systems of upland rice + maize -/- cassava- mungbean. The experiment was carried out in Tamanbogo Station Farm, East Lampung since 2007 until 2009 using randomized complete block design with 3 replications. The treatments were (1) 10 t ha-1 manures+1 t ha-1 of PR, (2) Without manure+1 t ha-1 of PR, (3) 10 t ha-1 manures+100 kg ha-1 of SP 36, and (4) Without manure+100 kg ha-1 of SP 36. The results showed that the application of manure along with PR improved soil physical characteristics of ultisol soil and gave the highest yield of foods crops with B/C in year 3th was 3.60.   
Applications of Potassium Fertilizer and Bacillus Sp. Biopesticide for Increasing Tomato Resistance to Bacterial Wilt Disease Prihatiningsih, Nur; Djatmiko, Heru Adi; Rochminarsi, Eny
AGRIVITA, Journal of Agricultural Science Vol 33, No 1 (2011)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Bacterial wilt on tomato caused by Ralstonia solanacearum is a crucial disease, because it can reduce yield until 50%. The aims of this research were: 1) to find out biopesticide formula for Bacillus sp.growth, 2) to test Bacillus sp. against R. solanacearum in vitro, 3) to test potassium fertilizer combined with Bacillus sp. for enhancing tomato resistance to the bacterial wilt disease. The research was conducted in 2 steps i.e to test the persistence of Bacillus sp. In biopesticide formula, and to test the best combination of both potassium and the Bacillus sp. biopesticide. The results showed that Bacillus B298 was the best isolate in its persistence on the biopesticide formula of organic growth medium+CaCO3+CMC 1%+mannitol 1%, and in inhibiting R. solanacearum. The best biopesticide formula for the Bacillus sp. persistence was growth organic media+ CaCO3+CMC 1%+mannitol 1%. Bacillus sp. was able to increase tomato resistance to the bacterial wilt disease from the category of susceptible to be tolerant and becoming resistant.   Keywords: tomato, Ralstonia solanacearum, potassium and Bacillus sp.
P USE EFFICIENCY BY CORN (Zea mays L.) IN ULTISOL DUE TO APPLICATION OF COAL FLY ASH-CHICKEN MANURE MIXTURE Hermawan, Agus; Sabaruddin, Sabaruddin; Marsi, Marsi; Hayati, Renih; Warsito, Warsito
AGRIVITA, Journal of Agricultural Science Vol 36, No 2 (2014)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Low P availability is the main constraint for crops on acidic soil such as an Ultisols due to high soil P sorption. The objective of current research was to determine the effect of coal fly ash-chicken manure mixture application on P use efficiency by corn (Zea mays L.) in Ultisols. The research were arranged according to Factorial Completely Randomized Design with three replicates. The treatments tested were the rates of FA-CM mixture (w/w of 1:1) that consisted of 0, 15, 30, 45 and 60 tons ha-1, and P fertilizer rates that consisted of 0, 0.5, 1.0, 1.5 and 2.0 times of P requirement to achieve of 0.2 μg P mL-1 in soil solution (equivalence to 0, 87, 174, 261 and 348 kg P2O5 ha-1). Results of current research showed that P use efficiency by corn on Ultisols had been increased through the addition of FA-CM in combination with P fertilization at the rate of 87 kg P2O5 ha-1. The optimum rate of FA-CM in combination with P fertilizer at the rate of 87 kg P2O5 ha-1 is 28.60 tons ha-1, with P uptake efficiency of 42.41 % and agronomic P efficiency of 82.53 mg shoot dry weight/mg P from fertilizer.

Page 17 of 92 | Total Record : 916

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