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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.
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Articles 19 Documents
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Search results for , issue "Vol 41, No 3 (2019)" : 19 Documents clear
Application of Coastal Sediments and Foliar Seaweed Extract and Its Influence to Soil Properties, Growth and Yield of Shallot in Peatland Sulakhudin, Sulakhudin; Hatta, Muhammad; Suryadi, Urai Edi
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.939

Abstract

The high soil acidity and low nutrient content in the peatland may inhibit the growth and yield of shallot and result low productivity. As consequence, the use of peat as a growing medium needs soil fertility improvement. One alternative to improve soil fertility, growth and yield of shallot is by applying coastal sediment and foliar seaweed extract which are easy to obtain and relatively inexpensive in West Kalimantan. This study aimed to investigate soil chemical properties, growth and yield of some shallot variety after the application of coastal sediment and foliar seaweed extract (Eucheuma cottonii). A field trial was carried out through the wet period of 2014 in West Kalimantan, Indonesia. The foliar seaweed extract was applied as the foliar fertilizer (0 and 3%), meanwhile the addition of coastal sediment was done at doses of 0 and 40 t/ha. The application of coastal sediment of 40 t/ha improved some chemical properties i.e. pH and the availability of K, Ca, Mg and Na of peat soil. The combination of foliar seaweed extract with 3% and 40 t/ha of coastal sediment increased growth and yield of all shallot variety in peatland compared to using foliar seaweed extract or coastal sediment only.
Improvement Chemical Properties of Oxisols and Rice Production with Humic Substances from Sub-bituminous Coal Indonesia Herviyanti Herviyanti; Gusnidar Gusnidar; M. Harianti; A. Maulana
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.1106

Abstract

Humic Substances (HS) sources of  Sub-bituminous can be used as soil amandement. The purpose of this research was to examine the residual effects of HS combined with P-fertilizers and the method of  incubation to improve Oxisols fertility and rice production. The experiment consisted of 2 factors, including: 1) incubation methods (i.e. I1 = HS incubated 1 week, then incubation of P fertilizers 1 week; I2 = HS and P- fertilizers directly incubated into the soil  2 weeks; and I3 = HS and P-fertilizers mixed 1 week, then incubated to soil 1 week), and 2) residual effect of HS with P-fertilizers combinations (i.e. H1 = 800 ppm + 100%; H2 = 800 ppm + 75% R; H3 = 400 ppm + 100% R; and H4 = 400 ppm + 75% R). All treatment was compared to the tradition of fertilization by the local farmers and control. The results showed that the combination of residual effects (HS and P-fertilizers) with the incubation method decreased exchangeable Al, as consequently increased the available P in Oxisols. The HS addition increased the efficiency of P fertilizers up to 25%, as well as increased rice production in averaged 3.9 t/ha (i.e. treatment H4).
Feeding Preference and Development of Sitophilus oryzae L. on Organic and Inorganic Rice Cultivation Ludji Pantja Astuti
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.2362

Abstract

This study examined the preferences and development of Sitophilus oryzae on different organic and inorganic rice varieties by free-choice and no-choice tests. Feeding preference was assessed by the male and female adult present and the percentage of weight loss. The development was assessed by the numbers of eggs, larvae, pupae, and adults, the period of eggs, larvae, and pupae, the total development time, larval growth index, growth index, and biotic potential. The free-choice test showed that the number of male and female present and the percentage of weight loss were higher on inorganic rice than on organic rice of either the Shinta Nur or IR-64 variety. The no-choice test showed that the numbers of eggs, larvae, pupae, and adults were higher on inorganic rice than on both varieties of organic rice. The period of eggs, larvae, and pupae and the total development time were shorter on inorganic rice than on organic rice. The larval growth index, growth index, and biotic potential were higher on inorganic rice than on organic varieties. Organic rice had high levels of phenolic, amylose, and carbohydrates, but smaller seed size and lower protein levels and ash was preferred less compared with inorganic rice of both varieties.
Size Classification of Tomato Fruit Using Thresholding, Machine Learning, and Deep Learning Techniques Robert G. de Luna; Elmer P. Dadios; Argel A. Bandala; Ryan Rhay P. Vicerra
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.2435

Abstract

The size of tomato fruits is closely related to the market segment and price. Manual sorting in tomato is very dependent on human interpretation and thus, very prone to error.  The study presents thresholding, machine learning, and deep learning techniques in classifying the tomato as small, medium, and large based from a single tomato fruit image implemented using Open CV libraries and Python programming. Tomato images with different sizes are gathered where features like area, perimeter, and enclosed circle radius are extracted. The experiment shows that using thresholding, a classification accuracy of 85.83%, 65.83%, and 80% was achieved for area, perimeter, and enclosed circle radius, respectively. For machine learning, the training accuracy rates were recorded as 94.00%-95.00% for SVM, 97.50-92.50% for KNN and 90.33-92.50% for ANN. Comparison of models revealed that SVM is the most model without over fitting. The deep learning approach, regardless of the algorithm, produced low performances with 82.31%-78.21%-55.97% training-validation-testing accuracy for VGG16, 48.17%-41.44%-37.64% for InceptionV3, and 56.05%-44.96%-22.78% for ResNet50 models. Comparative analysis showed that machine learning technique bested the performance of the thresholding and deep learning techniques in classifying the tomato fruit size in terms of accuracy performance.
Evaluation of Cladosporium sp. Mycoparacites as Biocontrol Agents of White Rust Disease on Chrysanthemum Evi Silvia Yusuf; Kurniawan Budiarto; Indijarto Budi Rahardjo
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.1864

Abstract

Cladosporium is a promising mycoparasite to control white rust disease in chrysanthemum. The research was conducted to evaluate several collected Cladosporium isolates against P. horiana, their parasitism mechanism and population dynamic in a production cycle. The experiment was carried out at the Indonesian Ornamental Crops Research Institute (IOCRI) from January to December 2015. Ten Cladosporium isolates with two synthetic fungicides and one negative control were designedly sprayed on chrysanthemum cv White Fiji. The results showed that Cladosporium isolates gave varied suppression to white rust intensity. Isolates HNC, DC, SGC and UC had higher parasitism and suppression intensities than other isolates and their effectiveness was the same as synthetic fungicides. Longer flower vase life was produced from Cladosporium and synthetic fungicide treated plants, while flower stalk and diameter were less affected by the Cladosporium applications. The population dynamic of Cladosporium was accordingly responded with the rust intensity in Cladosporium-treated plants. The parasitizing mechanism of Cladosporium to P. horiana was through teliospores envelopment resulted in the changes of teliospores morphology.
Growth and Betacyanin Content of Beetroots (Beta vulgaris L.) Under Water Deficit in A Tropical Condition S.M. Sitompul; Mochammad Roviq; Ervina Riedo
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.2264

Abstract

The present study, a part of a series of studies carried out to explore the possibility of beetroot cultivation in the tropics on highlands, was designed to investigate the growth and betacyanin content of beetroot plants in response to water deficit in a tropical condition. The water deficit was executed through varied watering intervals consisting of once three (as control), four, five, six and seven days. A randomized block design with five replicates was used to impose the treatments. The effect of water deficit was found to reduce the leaf water content, the biomass production (total dry weight) and the root yields of beetroot plants. Root dry weight decreased by more than 20% and 50% with the watering interval once four and seven days respectively compared with that once three days. The betacyanin content of roots was not influenced by the water deficit when expressed per unit volume of fresh root extracts (340.5 ± 60.1 mg/l), and increased when expressed per unit root dry weight. It is suggested that an optimal supply of water, for instance watering once three days, is necessary to obtain beetroot plants growing optimally and producing a high root yield and betacyanin content of roots.
Genetic Analysis of Morpho-Physiological Characteristics of Sunflower Under Stress and Non-Stress Drought Conditions Mehdi Zohdi Aghdam; Farrokh Darvish Kojouri; Mehdi Ghaffari; Asa Ebrahimi
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.2159

Abstract

Five Cytoplasmic Male Sterility (CMS) lines and four restorer lines (tester) were crossed in a line x tester scheme in order to analyze general and specific combining abilities and gene effects on sunflower for some agronomic and physiologic traits. Hybrids were evaluated in a randomized complete block design, with three replications under optimum and limited water conditions. The results of combined analysis of variance for different traits in optimal conditions showed that the mean square, except for the % RWC traits in the limited conditions for plant height, head diameter, number of seeds per head, 1000-seeds weight, proline, catalase enzyme, superoxide dismutase enzyme, chlorophyll a, chlorophyll b, grain yield, and oil yield were significant. Results of data variance analysis indicated that the general combining ability for lines and tester was significant, as well as the specific combining ability (line x tester) for most traits. Based on the AGHK30 and AGHK44 combining ability, the RGHK25, RGHK50 and RGHK50 x AGHK56 and the RGHK56 x AGHK44 tester were identified as the most suitable line for the hybrid test in both conditions. 
Effect of Castanopsis megacarpa Extract on Mortality, Longevity Development and Feeding of Crocidolomia pavonana Larvae Edy Syahputra; Kukuh Hernowo; Riko Riko
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.2331

Abstract

As several reports of impacts arise due to the use of synthetic insecticides, the investigation for safer alternative insecticides should be continued. Using plant material that has several bioactivities is a promising way out to control insect pest. The objective of this study was to evaluate the effect of leaf and seed extract of Castanopsis megacarpa on mortality, longevity development and feeding preference of Crocidolomia pavonana larvae. Extraction conducted by infusion method. The bioassay assesment was carried out using the residual method. The concentration-mortality relationship was analyzed by probit. The antifeedant test was tested using choice and no-choice methods. Both extracts showed the same strong insecticidal activity, LC50 of 0.18% (leaf) and 0.12% (seed). Leaf and seed extracts at concentrations equivalent to LC50 and LC75 in both methods used showed consistent antifeedant properties. The antifeedant activity of extracts in the no-choice method at both concentrations showed a range of activities of 40.1%-53.7% (leaf) and 74.4%-82.7% (seed) extracts. The leaf and seed extracts of C. megacarpa did not significantly extend the larval development period. Plant material that has more than one bioactivity will be better for suppress the insect pest populations in the field.
Antibacterial Effects of Green Betel (Piper betle Linn.) Leaf Against Streptococcus agalactiae and Escherichia coli Puguh Surjowardojo; Endang Setyowati; Ike Ambarwati
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.2437

Abstract

This study investigated the effect of betel (Piper betle L.) leaf at two physiological ages (young, 3rd leaf, and old, 8th leaf) at three concentrations of crude boiled-water extracts (10%, 20%, and 30%) against Streptococcus agalactiae and Escherichia coli. A completely randomized design with nesting was adopted for the six treatments and six replicates. The inhibition zone on nutrient agar media was measured. Overall there were no significantly differences. However, the inhibition zone diameters with 10%, 20%, and 30% crude water extracts of young leaves with S. agalactiae were 5.18 ± 0.99, 5.96 ± 0.34, and 6.38 ± 1.52 mm, respectively, and for old leaves, they were 5.76 ± 0.62, 5.67 ± 0.43, and 4.68 ± 0.33 mm, respectively. For E. coli, the corresponding values for young leaves were 3.96 ± 1.45, 4.54 ± 0.72, and 3.51 ± 0.48 mm, respectively, and for old leaves, the values were 3.85 ± 1.20, 4.14 ±0.68, and 2.35 ± 0.83 mm, respectively. The strongest inhibition was shown by the 30% crude water extract of young leaves against S. agalactiae.

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