bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phytochemical and antioxidant activity of gaharu leaf tea (Aquilaria malaccensis Lamk) as raw material of tea from middle Tapanuli Regency, North Sumatera Province
Authors: Surjanto  , Batubara R , Hanum T I , Pulungan W 
Published: June 2019

Abstract
Gaharu (agarwood) grows naturally in Sumatera, especially in Middle Tapanuli regency. The development of knowledge and research about gaharu leaf has been used as raw material for brewed beverage or tea. The purposes of this research were to observe the leaf used as raw material of gaharu leaf tea that grows naturally in Middle Tapanuli by looking at the chemical compound contained in the leaf which function as antioxidant and to know the antioxidant activity and tannin content of the leaf. Gaharu leaf from 2 growing sites (Sigiringgiring village and S. Kalangan II village) was identified, then processed into leaf simplicia and extracted with 96% ethanol solvent. Phytochemical screening of alkaloid, glycosides, steroids/triterpenoids, flavonoids, tannins and saponins compounds were conducted. The antioxidant activity test was performed by DPPH method to obtain IC50 (Inhibitory Concentration) value. The results showed that the agarwood leaf from Sigiring-giring contained terpenoids and saponins and from S. Kalangan II contained of tannins and saponins. The results of antioxidant activity test showed that agarwood leaf extract has IC50 value in 56,985 dan 44,382 μg/ml which meant strong and very strong antioxidant activity category.
Proximate carcas composition with different CaHPO4 and body conformation of Red Tilapia
Authors: Yusni E 
Published: June 2019

Abstract
Carcass composition of traits such as protein, ash, moisture, amino acids and minerals in red tilapia was investigated. All diets were formulated at 29% of crude protein 0.5% of calcium-phosphate and energy: protein ration 150:5 for diet C1, 30% of crude protein, 1.0% of calcium-phosphate and energy: protein ration 151:7 for diet C2, and 31% of crude protein, 1.5% of calcium-phosphate and energy: protein ration 151:5 for diet C3. The body weight of tilapia species is 169.38g (±4.32). 60 of fish and three replicates were used for this study to the analysis of carcass composition. The other carcass parts of body fish as muscle, bone, scale, and gill was found to be significant (p<0.01). The mean of carcass composition of three levels of calcium-phosphate as muscle, bone, scale, and gill were found to be higher in level diet C2 compared to diet C1 and C3 was found no significant differences.
Assessment of one-year mangrove reforestation using Rhizophora apiculata seedlings in Lubuk Kertang village, North Sumatra
Authors: Basyuni M , Al Habib A , Slamet B , Sulistiyono N , Putri L A P , Bimantara Y , Yusraini E , Lesmana I 
Published: June 2019

Abstract
Mangrove forests in North Sumatera existed in the east coast of Sumatera Island and are rapidly degraded due to anthropogenic activities such as mangrove conversion to other land-uses. The present study describes one-year assessment on mangrove rehabilitation in Lubuk Kertang village, Langkat, North Sumatra, Indonesia. The restoration was carried on May 2016 using indirect planting of 6,000 Rhizophora apiculata seedlings. R. apiculata belongs to Rhizophoraceace family with hardwoods, have good stilt roots that can survive in mud substrate. The assessment was carried out in 4 plots with each plot consist of 100 plants. The evaluation parameters of mangrove reforestation comprise of seedling growth rate, diameter and height, leaf thickness and some leaves. Results show that the growth rate for first-year assessment was 92.3 % considered successful because of the average percent growth of plants ≥ 70 %. By contrast, the height, diameter, and a number of leaves seedlings planting were shown variation performance of among the plots observed. Our present study suggested that success factors in the rehabilitation of mangrove affected by salinity, substrate conditions, pests and diseases and human activities on the rehabilitation site.
Response of tomato (Lycopersiconesculentum Mill) infected by Phytophthora infestans (Mont.) De Bary with the treatment of copper and potassium phosphate on plant development
Authors: Astini  , Lisnawita  , Hanum H 
Published: June 2019

Abstract

Phytophthora infestans is an important disease in the highland of Karo Regency, North Sumatera, Indonesia. The disease caused a failure of tomato production. P. infestans mainly damages the leaves causing disruption to plant growth and development. This study was to evaluate the development of tomato plants infected by P. infestans treated with potassium phosphite and copper. The experimental was set in a completely random design, consisted of two factors. The first factor was copper with 2 doses namely 0 %, 0.07 % and the second was potassium phosphate with 4 level doses each 0%, 0.4%, 0.8% and 1.2%. The result showed that potassium phosphate could significantly reduce disease severity of P. infesting by 31.62 % to 36.40%, 40.26 to 63.65 % at dose of 0.4 % and 0.8 % respectively. Tomato infected by P. infestans showed a positive response to copper and potassium phosphate treatments which characterized by an increase in the plant dry weight, the plant height and the plant stem diameter. The best dry weight of plant was obtained from Cu at dose of 0.07 % and potassium phosphate at dose of 1.2 % while the plant height was obtained from Cu at dose of 0.07 % and potassium phosphate at dose of 0.4 %.
Growth pattern of fifteen upland rice varieties in shading stress
Authors: Khairunnisa  , Rosmayati  , Hanum C 
Published: June 2019

Abstract
Shading stress will affecton varieties growth of upland rice especially in the vegetative phase. The objective of this research to study the growth pattern of fifteen upland rice varieties in shading stress treatment. The research was carried out in Cengkeh turi Binjai started from May to August 2018. The research used a split plot design with two factors. The first factor was the shading stress, consist of; control, 25%, 50% and 75%. The second factor was15 upland rice varieties, consist of: Inpago 5, Lipigo 4, Inpago 8, Inpago 10, Towuti, Kalimutu, Limboto, Black rice, Red rice, IPB 8G, IPB 9G, Lipigo 1, Lipigo 2, Situ patenggang, and Situ bagendit. Decreased of light intensity caused of increase plant length on shading stress treatment 25% were 4.24%. Shading stress treatment in 25%, 50% and 75% will decreasing the number of tillers. Similarly, the parameter of dry weight was decreased in accordance with the increasing in the shading stress treatment that given. Chlorophyll a content was higher than chlorophyll b at all shading stress and varieties. Different from black and red rice which have higher chlorophyll b content at 50% and 75% and Lipigo 1 at 75% shading stress treatment.
Potential uses of Marine Bean (Vigna marina Burm.) as salt tolerant Legume in coastal salty land, Southeast Sulawesi, Indonesia
Authors: Septiana A , Analuddin  
Published: June 2019

Abstract

Vigna marina has potential to use as productive legume in salty areas of southeast Sulawesi. The study aimed to know the adaptation of V. marina grown under higher salinity condition, and elucidate their potential uses as salt tolerant legume in salty land. The germinated seeds were placed in polybags. Five polybags were taken as control, while five polybags watered by NaCl 200mM, and five polybags watered by NaCl 400mM for every day during 2 months. The dry biomass, chlorophyll and antioxidant (Vitamin C, anthocyanin and alkaloid) contents were determined. The results showed that dry biomass of marine bean was not significantly different among treatment indicating similar growth ability of marine bean at different treatment. On the other hand, the contents of chlorophyll a and chlorophyll b, as well as antioxidant were significantly higher at salinity concentration of NaCl 400mM, indicating higher salt concentration induced the marine bean to produce higher chlorophyll and antioxidant contents as mechanisms to grow and withstand in the salty land. Therefore, the results of this study indicated that this legume is salt tolerant and is potential to use as productive legume at coastal salty land.
Growth and production of soybean (Glycine max L. Merril) varieties in response to waterlogging at vegetative (V5) growth phase by application of gibberellic acid and salicylic acid
Authors: Calvin  , Damanik R I , Siregar L A M 
Published: June 2019

Abstract
Waterlogging can cause damage to soybean plants that can decrease the growth and yield. The objective of this research was to measure the growth and production of three soybean varieties such as Burangrang, Anjasmoro and Argomulyo, imposed on waterlogging at vegetative stage (V5) along with the application of GA3 and Salicylic acid. Waterlogging was conducted for 72 h by sinking the planting media inside a pool filled with water. Number of leaves, pod, seed and chlorophyll content were measured. The result showed that foliar application of GA3 (200 ppm) together with Salicylic acid (150ppm) for each enhanced the number of pod and seed for Burangrang soybean variety on waterlogged condition compared with normal condition. Burangrang and Anjasmoro soybean varieties gave the highest chlorophyll content on waterlogged condition after being applied by the same dose of plant growth regulators. In term of yield (number of pod and seed per plant), Burangrang soybean variety is the most promising variety to plant in waterlogged condition.
Changes in some characters of soybean leaves inoculated with mycorrhiza in salinity stress
Authors: Rahmawati N , Rosmayati  , Delvian  , Basyuni M 
Published: June 2019

AbstractIncreasing soybean production can be done by expanding the planting area on suboptimal land such as saline soils. Leaves which are an important part of plants where the photosynthesis takes place also experience disturbances due to salinity stress. Efforts can be made to overcome salinity stress, among others by planting salinity tolerant soybean genotypes and mycorrhiza inoculation. This study aims to analyse changes in leaf morphology characters in two soybean genotypes inoculated with mycorrhiza in salinity stress. The study used split-plot design with the main plot of soybean genotype (Grobogan variety and Grobogan soybeans selected for salinity tolerance) and subplots arbuscular mycorrhizal fungi isolates (control, Glomus sp. 1, Glomus sp. 2, Glomus sp. 3, Glomus sp. 4, Glomus sp. 5, and isolates the mixture of all isolates) in the experimental field of Paluh Merbau Village Deli Serdang with 1.5 m above sea level and salinity level of 5-6 dS/m in February-May 2013. The results showed the number of leaves, leaf area, chlorophyll a, and chlorophyll b were significantly affected by the interaction of soybean genotype and mycorrhizal inoculation. While the treatment of soybean genotypes and mycorrhizal inoculation showed significant differences in the number of stomata and thickness of cuticles.
Effect of benzyl amino purin (BAP) and gibberellin acid (GA3) to chlorophyll and antioxidant enzymes of soybean (Glycine max (L) Merill.) genotypes in response to inundation conditions
Authors: Damanik R I , Lumbangaol L D , Rahmawaty N , Sipayung R 
Published: June 2019

Abstract
Indonesia’s climate change issues cause the significant potential for inundation to occur when rainfall is too high in the area of soybean cultivation, which can give an impact on soybean productivity. The objective of this research was to measure the effect of growth regulators which can respond to soybean plant adaptation to inundation stresses. The influence of Benzyl Amino Purin (BAP) and Gibberellin Acid (GA3), and their mixture on the chlorophyll and antioxidant defense system of three (Grobogan, Willis, and Detam-1) soybean genotypes has been conducted subjected to inundation condition in March 2018. The chlorophyll total by GA3 was significantly increased at Detam-1 soybean genotype, while no change in other two soybean genotypes in GA3, BAP, and the mixture compared to controls. Exogenous GA3 enhanced the activity of superoxide dismutase (SOD) in Grobogan and Detam-1 soybean genotypes in response to inundation (72 h). On the other hand, peroxidase (POD) activity was enhanced on Grobogan with GA3, and Detam-1 soybean genotypes with BAP applications when compared to control. Our result reveals that SOD together with POD activities was participate to protect Detam-1 soybean genotype from inundation condition.
The efficacy indaziflam on weed seedbank vertically on the ultisol soil on palm oil plantations
Authors: Tampubolon P K , Purba E , Mukhlis  
Published: June 2019

Abstract
Seedbank control is important in integrated weed management. This study aims to determine the dose of indaziflam to seedbank at some depth of soil on oil palm plantations. The experiment used factorial randomized block design with four replications. Measured at an indaziflam dose 75, 100, 150 and 200 gram of active ingredients per hectare (g.a.i.ha−1), and soil depth 0-5, 5-10, 10-15 and 15-20 cm. Results showed that indaziflam doses 150-200 g.a.i.ha−1 were able to suppress the presence Eleusine indica at 4.8 and 12 weeks after application (WAA) (71.91-91.13%). Dosage 75-200 g.a.i.ha−1 effective controlling Cynodon dactilon at 8 and 12 WAA (66.07-89.29%). Dosage 150-200 g.a.i.ha−1 effective controlling Kyllinga nemoralis at 4 and 12 WAA (76.57-100%). Dosage 100-200 g.a.i.ha−1 effective controlling Phyllanthus niruri (100%), dosage 150-200 g.a.i.ha−1 effective controlling Cleome rutidospermae (74.49-85.92%), and dosage 75-200 g.a.i.ha−1 effective controlling Ageratum conyzoides (100%) at 12 WAA. Effectiveness indaziflam can suppress the presence Eleusine indica and Kyllinga nemoralis at a soil depth 0-20cm (4.8 and 12 WAA), Cynodon dactilon at a depth 5-20cm (8 and 12 WAA), and Ageratum conyzoides at a depth 0-15cm (12 WAA).
Chlorophyll content and stomatal density of soybean varieties on technological packages application under dry land conditions
Authors: Hasanah Y , Hanum H , Hidayat A S 
Published: June 2019

Abstract
The development of dry land as agricultural land for increasing soybean production is faced with a number of problems. Therefore, a technological package is needed for soybean cultivation under dry land condition and also need the varieties that are tolerant under dry land conditions. The study aimed to identify the chlorophyll content and stomatal density of soybean by applying several packages of soybean cultivation technology under dryland conditions. This research was conducted under dry land conditions at Tanjung Jati, Langkat (Indonesia). This research was conducted using a factorial randomized block design with 2 factors and 3 replications. The first factor was soybean varieties (Demas, Anjasmoro, Dering, Devon) and the second factor is technology packages (P1, P2, and P3). The result showed that each variety had different chlorophyll-a, chlorophyll-b, and total chlorophyll content. Dering variety has the highest total chlorophyll content, while Anjasmoro variety has the lowest total chlorophyll. Each variety had a significantly different stomatal density. Devon variety has the highest stomatal density, while Demas variety has the lowest stomatal density. The technology package with the addition of dolomite lime 2,000 kg/ha on Dering variety had the highest of chlorophyll content and stomatal density.
Performance of some populations of maize (Zea mays L.) on peat soil applied Sludge and ash of oil palm
Authors: Lubis K , Siddik S S , Setiado H 
Published: June 2019

Abstract
The objective of this study obtained the appearance of the vegetative and reproductive character of some maize populations on peat soil with pH criteria of 5.9 and application of sludge and ash of oil palm. The research was conducted at Tanjung Rejo, Medan city from April to August 2017. This research used a Randomized Block Design (RBD) with 2 treatment factors. The first factor was the population consisting of 5 levels: A (NEI9008 x CLA46), B: (NEI9008 x CLA106), C: (CLA106 x NEI9008), D: (CLA16 x CLA84), E: (CLA84 x NEI9008) and the second factor was planting medium consisting of 3 levels is M1 (peat), M2 (peat + ash of oil palm), M3 (peat + sludge). The results showed that the interaction between planting media with some populations of maize had a significant effect on plant height character. The best media was found in M3 (peat + sludge). The best population based of the highest plant were population C (CLA106 x NEI 9008) and D (CLA 16 x CLA 84).
Problems of spatial development of the agro-industrial complex of the Krasnoyarsk Region
Authors: Mazloev V , Ozerova M 
Published: June 2019

Abstract
The spatial development of the agro-industrial complex of the Krasnoyarsk region is very diverse and uneven. This is due to the introduction of high-tech industries in individual territories, which increases their investment attractiveness, and state subsidies on the principle of supporting growth points. The identification of territories requiring a special regime of economic incentives for the purpose of equalizing territorial heterogeneity is proposed to be typified. Generalization of long-term studies of agricultural economists allowed authors to include the natural and climatic conditions and the level of social and economic development, which are characterized by such a set of indicators as (i) the hydrothermal coefficient to the main factors of differentiation of territories; (ii) provision of plants with heat; (iii) soil characteristics; profit per average annual employee; profitability of agricultural production; state support per one agricultural organization; (iv) profit per 1 rub. of state support; (v) level of remuneration of workers; and (vi) rural population growth. Approbation of calculations based on data from 36 districts of the Krasnoyarsk region with the use of an integral indicator, as the average value of their score, made it possible to conclude that 8 districts of the region were in a low socio-economic development group and needed to develop measures to stimulate entrepreneurial initiative with the participation of government funding.
Priority areas for stimulating innovation and technological development of the poultry industry
Authors: Burova D , Akopyan A , Roiter L 
Published: June 2019

Abstract
The innovative development of the poultry industry is currently at a stagnation stage. To increase the competitiveness of enterprises, it is necessary to stimulate the innovative potential of the industry through the development of those areas that are used in world practice, but in the Russian Federation are absent or underdeveloped. Therefore, a more careful study of all existing types of incentives for innovation and technological development of the poultry industry is necessary, which indicates the relevance of this article. The article describes all the main problems of innovation development, ways to stimulate the technological development of production, as well as proposals for increasing the competitiveness of the poultry industry.
The purpose of the article is to consider the types of incentives for innovation in the poultry industry to identify the most priority of them. Within the framework of this goal, such tasks were set as providing a description of the main problems of innovative development of the poultry industry, consideration of the main ways of stimulating this development, as well as comparing the promotion of innovation in Russia and the world.
The main methodology of the article is the use of statistical data analysis methods, a graphical method, and a comparison method.
As a result of the study, it was revealed that in order to increase the competitiveness of poultry enterprises, it is necessary to more actively introduce technological innovations into the cultivation, housing and feeding of poultry, a more detailed study of the creation of a poultry cluster, as well as the development of a network of technoparks that currently do not have are competitive.
Key development directions of the milk market of the region
Authors: Charykova O , Salnikova E , Polunina N 
Published: June 2019

Abstract
The relevance of the research topic is determined by the importance of the milk market and its role in ensuring the food security of the country, as well as the current conditions created by the increasing complexity of the political and economic situation (the introduction of economic sanctions, increased competition, reduced product quality). In this regard, the purpose of the study is to substantiate the main directions of improving the organizational and economic mechanism of the milk market, ensuring the reduction of the impact of risks, the balance of mutual interests of market actors, the solution of the strategic task of food safety. The study used the balance, economic and statistical, monographic methods, the method of system analysis, theoretical and practical approaches developed by the authors. On the basis of the identified market conditions (demand, supply, and prices) and organizational and economic assessment of the milk market, positive (growth in retail trade, reduction in dairy product imports, large-scale modernization of the dairy industry) and negative (decrease in per capita consumption, reorientation of consumers to cheaper; dairy products with low added value, reduced consumption of cheese and butter) trends are identified and described. The article substantiates the promising directions and mechanisms for the development of the milk market: improving production efficiency and competitiveness of dairy products, timely regulating market conditions (maintaining a balance of supply and demand), developing the market supply infrastructure, establishing industry clusters, reducing dependence on imports, growing organic production, digitization of production and sales of products, the expansion of interregional relations and export support, stimulated creation of marketing structures and improvement of marketing technologies.
Scientific basis for forecasting the innovative development of the agricultural sector of the region’s economy (on the materials of the Perm region)
Authors: Sandu I , Butorin S , Ryzhenkova N 
Published: June 2019

Abstract
The article discusses the concept of the need to change approaches in forecasting the innovative development of the agricultural sector of the Perm region with the requirements of digitalization of the economy and management of innovation processes. The factors that ensure the management of innovative activities of enterprises and organizations operating in the agricultural sector of the economy are considered. A model for forecasting the innovative development of the agricultural sector of the region’s economy is proposed. The results of a study of the dynamics of innovation activity in the agricultural sector of the Perm region economy are summarized, and factors affecting its increase are identified. On the basis of them, the authors propose the key areas of innovation, which should be focused forecasting innovative development.