Abstract— This research focuses primarily on the causes, consequences and ways of mitigating the ongoing fresh water pollution problems among Akure communities. Surface water quality of River Ala, which cut across the town of Akure was assessed and three locations (3) were chosen spatially to reflect a consideration of all possible human activities capable of changing the quality of river water. Water samples were analyzed for physio-chemical parameters and it was observed that variations exists in the quality of the sampled waters and impaired to different degrees using WHO drinking water standards for the selected parameters. Leo road (Ala 3) has the highest dissolved solids, which shows that the dumping of waste to the water bodies might have caused the higher occurrence; the PH was low in Ala 3 and high in Ala 1 (Oke-Ijebu) with 6.9 and 7.4 respectively. The water is coloured, total alkalinity total hardness, iron and turbidity were found to be above the WHO standard, therefore not suitable for domestic use.
Keywords— River Ala, Water Pollution, Waste, Water Quality, Domestic Purposes.
The Link between Renewable Fuel Mandate and Natural Rubber Market in Malaysia: A Search for A Conceptual Framework
Abstract— Lately, fluctuation in world crude oil prices and increasing in biofuel demand have encourages the uses of biodiesel in worldwide. Malaysia is one of the countries that using renewable materials from crude palm oil. As the main feedstock for biodiesel, the implementation of biodiesel blend mandate in Malaysia is expected to interrupt the natural rubber industry due to the competition of land between oil palm and natural rubber. Previously, there was no any relationship between renewable energy particularly biodiesel to be linked with the natural rubber market. The implementation of B5 mandate in Malaysia will added a new dimension in the Malaysian natural rubber market. Therefore, the objective of this study is to develop the conceptual framework in examining the effect of biodiesel blend mandate on Malaysian natural rubber market. Malaysia natural rubber and palm oil market model been developed where consist of production, import, domestic consumption, export, domestic price and world price equations. The model was closed using domestic and world stock identity.
Keywords— Conceptual framework, Renewable Fuel Mandate, Malaysian natural rubber market, Palm oil market.
Acceleration of Lead Phytostabilization by Maize (Zea mays) in Association with Gliricidiasepium Biomass
Abstract— Soil where shooting practices are conducted is extremely contaminated with heavy metals, exclusively by Pb, due to the bullets and bullet fragments. These extreme concentrations of Pb, generate an unfavourable surroundings for agriculture and human health through phytoaccumulation. This study was conducted to assess the possibility of particular bio-amendment, phytostabilization on the reduction of bioavailable Pb in such contaminated soil. Biomass (BM) produced from Gliricidiasepium was used to see its ability to be used in soil remediation together with Maize (Zea mays) as phytostabilizer. A pot experiment was conducted with Maizeby adding BM at three different percentages, 1, 2.5 and 5% (w/w). Soil without amendments served as the control and arranged in a complete randomized design. By maize, translocation rate of heavy metals into crop were determined. After sixth week, grown maize were harvested and analyzed followed by digestion with con.HNO3. The most significant immobilization (p<0.05) was indicated by treatment 5% BM for Pb than control. Metal translocation towards plant decreased with increasing application rate of soil amendment,Gliricidia woody BM. Determination of Plant factor (PF) and Translocation factor (TF) indicates that PF>TF in maize. For the treatment 5% BM, PF and TF for Pb are 1.22 and 0.15 respectively. Thereby maize can be considered as a potential phytostabilizer. At the same time efficiency of phytostabilizing nature of maizecan increase together with the application of soil amendment – BM.
Keywords— Amendment, Biomass, Immobilization, Phytostabilizer, Translocation factor.
Dynamic of bruchid egg-laying in cowpea-based cropping systems: importance for determining an optimal release period of the oophagous parasitoid Uscana lariophaga Steffan (Hymenoptera: Trichogrammatidae)
Abstract— In West Africa, the pods of cowpea, Vigna unguiculata (L.) Walp., are often infested with eggs of the main bruchid species, Callosobruchus maculatus Fab. and Bruchidius atrolineatus Pic in the fields resulting in significant post-harvest losses. An experiment was carried out from 2010 to 2011, at Gampela in central Burkina Faso, to identify the optimal period of the oophagous parasitoid (Uscana lariophaga Stef.) releases in cowpea –based intercropping systems, in order to minimize or supress the initial infestation of cowpea pods. During both years of study a relatively low number of bruchid eggs was noticed on the pods (60-130 eggs/100 pods). However, there was significantly a larger number of eggs laid in monocrops in comparison to intercrops. Natural global parasitism of bruchid eggs by Uscana lariophaga ranged 20-45% but was significantly higher in intercrops where parasitism peaks >50% were sometimes reached. Comparative analysis of bruchid egg laying and their parasitism showed that cowpea infestation gradually increased whereas parasitism decreased. Given these results we discuss and suggest that cowpea be produced in millet intercropping systems and combined with releases of U lariophaga in the fields specifically during cowpea pod setting.
Keywords— Bruchid egg laying dynamic; Cowpea, Egg parasitism, Intercropping, Parasitoid releases.
Analysis of Herbicide Atrazine and Its Degradation Products in Agricultural Soil by Ultra-Performance Liquid Chromatography‒Mass spectrometry
Abstract— A novel ultra-performance liquid chromatography‒mass spectrometry (UPLC‒MS) method was developed for the determination of herbicide atrazine (ATR) and its principal metabolites namely deisopropylatrazine (DIA), deethylatrazine (DEA) and hydroxyatrazine (HA) in soils. The limit of detection ranged from 0.06 μg kg‒1 (DEA) to 0.25 μg kg‒1 (HA). Recoveries for the four target analytes at three spiked levels ranged from 73.2 to 110% with relative standard deviation of 5.1‒8.1%. In the cases of the three control soil samples spiked with ATR were treated for 60d, the sum content of the three degraded products is 3, 6.4, and 6.8 times greater than ATR residue, respectively. Analyzing 80 soil samples from four counties evaluated this method. ATR of 1.1‒125 μg kg‒1 in 80 of 80 samples, ATR of 0.5‒7.8 μg kg‒1 in 39 of 80 samples, and DIA of 0.5 and 0.6 μg kg‒1 in 2 of 80 samples were found. The proposed method can ensure the rapid and highly sensitive analysis of atrazine and its degradation products in soil, and can provide a direction for proper application of atrazine and a base for evaluating their hazards to the environment.
Keywords— Atrazine residue, degradation products, soil, ultra performance liquid chromatography‒mass spectrometry.
Abstract— The status of Zinc (Zn) and Copper (Cu) of fadama soils under cultivation at Borgu Local Government Area, Niger State, Nigeria was studied. Soil samples were purposely collected from three extension blocks, namely; Wawa, Babana and Goffanti. Particle size distribution of the soils showed sandy loam texture. The soils pH were either slightly acidic or neutral with a range between 6.05 and 6.93. The level of Organic Carbon (OC) ranged between low and medium, total nitrogen were rated high, available phosphorus were low while exchangeable cations (Na, K, Ca, Mg) were all rated high. Though soil content of Zn and Cu were very low, values were not significantly (P<0.05) different for all locations. The mean values for Zn ranged between 0.496 and 0.592 mg/kg, while Cu ranged between 0.550 and 0.945 mg/kg. This result implies that soil amendments in the form of organic manure and/or supplement of Zn and Cu would enhance nutrient availability for optimum yields of crops for the resource-poor farmers in the study area.
Keywords— Zinc, Copper, Fadama, soil fertility, Borgu.
Analysis of Sustainablity patterns of stair stepped villages in northwest Iran Case study: Totakhaneh, the wonderful village
Abstract— Various factors impact on residential complexes as well as villages. These are called economic, sociocultural and environmental factors. Sustainable residential complexes have balanced among these factors. This paper is studying the stair stepped village named Totakhaneh located in east Azerbaijan, Iran. The paper is to answer the question - are mentioned factors balanced in formation process of village texture? Is Totakhaneh a sustainable residential complex? The investigation method is descriptive-analytic; data and information collected through fieldwork and library study. Finally, it was concluded that although nature has meaningfully affected on the formation of the village; however sociocultural and livelihood issues have been influential on major and minor decision-making processes and the village has been assumed a sustainable residential complex before accession to the modern life.
Keywords— sustainability, village, rural housing, sustainable residential complexes, Bonab.
Abstract— The aim of the present investigation was to assess the suitability of textile mill effluent (TME) (untreated) at different concentrations (Control, 2.5, 5, 15, 25, 50 75, and 100%) for irrigation purposes. Effect of textile mill effluent on seed germination, shoot and root length, fresh and dry weight, number of leaves, total leaf area, number of root nodules and pigments of chlorophyll ‘a’, chlorophyll ‘b’ and total chlorophyll of cow pea was studied at 15th DAS of seedlings. All morphological growth parameters, pigment contents, were found to increase at 5% textile mill effluent concentration and it decreased from 10% effluent concentration onwards. So these results reflect that the textile mill effluent is toxic to crop and it can be used for irrigation purpose after a proper treatment with appropriate dilution.
Keywords— Textile mill effluent, cow pea, germination percentage, plant biomass, pigment content.
Abstract— Yoghurt is a coagulated milk product that results from the fermentation of lactose in milk by Lactobacillus bulgaricus and Streptococcus thermphillus. The health benefits can be increased by adding native fruit pulps. Yoghurt with different fruit pulp includes papaya and cactus pear was prepared and stored up to 10 days. The fruit were added at the rate of 5%, 10% and 15%w/w. Physicochemical properties of yoghurt samples include moisture, protein, fat, carbohydrate and ash were determined at first days of storage. Acidity, pH, syneresis, water holding capacity (WHC), total count, coliform group, yeast &mould and organoleptic properties were evaluated yoghurts at zero time, after 5 and 10 days of storage at refrigerator.There were significantly differences between plain yoghurt and fruit yogurt in the pH, moisture, ash, protein, carbohydrate content and titratable acidity amounts 5 day of storage. The results showed that acidity increased over the storage period. Highest values for WHC and lowest values for syneresis were belonged to yogurt with 15 % cactus pear and 10 days storage with 71.21% and 16.01%, respectively. Sensory evaluation results showed that there were significant differences among the yoghurt samples. The yoghurt containing papaya pulp had the highest overall acceptability scores as compare to other fruit yogurt samples and also plain yogurt. The results of current study demonstrated that the addition of fruits to the yogurt significantly improved the quality of yogurt.
Keywords— Fruit yoghurt, Phytochemicals, Sensory quality, Syneresis, Water holding capacity (WHC).
Abstract— Effects of P deficiency and interactions Cultivar x P available, on wheat yield and ecophysiological components were analysed, considering that the grain number m-2 is the product of the length of spike growth period, crop growth rate during this phase, the proportion of growth for spikes (partitioning) and spike fertility (grain number produced per unit of spike dry weight). Four cultivars with different strategy to generate yield (i.e. combinations of ecophysiological yield components) were compared with and without P fertilization, during two years in Azul, Buenos Aires, Argentina. The soil was moderately P deficient (7-9 mg P kg-1 soil) and P fertilization treatments (50 kg P ha-1) were established at sowing. P deficiencies affected yield and most of its components, the exceptions were: partitioning to spike, spike growth period and radiation use efficiency. The interaction Cultivar x P fertilization was not significant in all cases. The lack of interaction between cultivar and P level suggest that improvements in any crop physiological component will express in both, moderately deficiencies or high P environment.
Keywords— Ecophysiological yield components, P deficiency, stability yield components.
Exogenous application with plant growth promoting rhizobacteria (PGPR) or proline induces stress tolerance in basil plants (Ocimum basilicum L.) exposed to water stress
Abstract— A pot experiment was conducted to investigate the effects of plant growth promoting rhizobacteria (PGPR) like Azotobacter chrocoocum A101, Pseudomonas fluorescens, pseudomonas mendocina Palleroni 1970 and Azospirillum lipoferum N040 or proline on growth traits, photosynthetic pigments, relative water content (RWC), electrolyte leakage percent (EL%), osmoprotectants such as proline and soluble sugars, activities of antioxidant enzymes like peroxidase (POD), polyphenol oxidase (PPO) and catalase (CAT), oil percent and water use efficiency (WUE) of basil plants subjected to water stress. Plants were treated with two regimes of irrigation water, i.e., 100% of evapotranspiration (ETc) (control) and 60% of ETc and PGPR or proline. Growth traits, photosynthetic pigments, RWC, EL %, proline and soluble sugars concentrations, activities of antioxidant enzymes oil percent and water use efficiency (WUE) were significantly altered by water stress and PGPR or proline treatments. Results indicated that PGPR or proline mitigated the water stress and significantly reduced the reduction in growth traits and leaf water content as compared to non-PGPR or proline-treated water-stressed plants. Water-stressed plants treated with PGPR or proline had significant higher photosynthetic pigments, proline and soluble sugars concentrations than water-stressed plants without PGPR or proline treatments. Higher POD, PPO and CAT activities were also observed in water-stressed plants treated by PGPR or proline than water-stressed plants without PGPR or proline treatments. Furthermore, water-stressed plants treated with PGPR or proline treatments had also significant higher oil percent and WUE as compared to water-stressed plants without PGPR or proline treatments. These results are important as the potential of PGPR or proline to alleviate the harmful effects of water stress and offers an opportunity to increase the resistance of basil plants to growth under drought conditions. The protective action of PGPR was more efficient than proline.
Keywords— Antioxidant system; Anatomy; Basil; Osmoprotectants; PGPR; Proline; Water stress.
Abstract— The aim of this study was to characterize the carbon storage - Ec (Mg ha-1), carbon stratification ratio, carbon management index (CMI) in various systems use and management: a) Native forest (NF), b) improved pasture of Tanzania grass (TIP), c) degraded pasture of Tanzania grass (DP), d) hay area (H) with Urochloa (syn. Brachiaria sp) and e) Corn crop conventionally cultivated for 10 years (CTC). The experiment was conducted at Institute of Animal Science, at Sertaozinho, São Paulo State, Brazil. The experimental design was randomized blocks with six replicates. The Ec, in Mg ha-1, adjusted variations in soil density, related to changes in land use were for native forest (112.9), improved pasture (81.6), system of conventional maize (78.2), field of hay (75.1) and degraded pasture (66.5). The highest values of carbon stratification (SR) were the forest (1.98), and lower in degraded pasture and conventional maize (1.10) - are considered poor in quality, while the improved pasture (1.28) and the area of hay (1.23 ) of media quality and while the forest considered great quality. For the different systems of use and management, low CMI values indicate a loss of soil quality related to native forest (100%), the values obtained in improved pasture (58%) indicate that there is potential for advances in the soil quality, adjusting grazing management and fertilization of annual replacement.
Keywords— Carbon management index, Carbon stratification ratio, Organic carbon.
Weekly and Monthly Groundwater Recharge Estimation in A Rural Piedmont Environment using the Water Table Fluctuation Method
Abstract— La Colacha basin (Córdoba province, Argentina) is a typical piedmont rural area where the unconfined aquifer is used for agricultural activities. The objective of this work is to show the estimation of the recharge (R) rate in the unconfined aquifer, using the water table fluctuation method (WTF). Furthermore, considerations in relation to monthly and weekly recharge rhythms and to the aquifer discharge (D) were performed. The aquifer shows a typical behavior of groundwater recharge areas with an important and quick answer of water table to the arrival of precipitations (P). After that, a recession curve is observed, representing the groundwater discharge to the local base level (the main stream of the basin). The monthly estimation resulted in an annual average R value of 14.3 % of total P. Although the major amounts of recharge occur in full summer, according to the major total amounts of P, the correlation between monthly R and P was low (r2 < 0.2) as a result of the high quantities of rainfall water that are converted into runoff. The regression coefficient is higher (r2 = 0.6) for the end of summer and autumn when rainfalls diminish and have low intensities. This situation provides less water to the aquifer, but the recharge process is more efficient. The ratio R/D for the 3 year series was positive, which means that the aquifer recharge was dominant. In the weekly recharge analysis, the annual average R is slightly lower than in the monthly one, that is, 12.4 % of the total P. Thus, it may be concluded that, in this case, the change from monthly to a weekly time step, did not much improve the final value. However, the information obtained with the weekly estimation is much more useful to interpret the aquifer detailed behavior.
Keywords— recharge, time step, unconfined aquifer
EDTA-enhanced phytoextraction of Cd and Pb in spiked soil with Marigold and associated potential leaching risk
Abstract— EDTA is a common chelating agent used in phytoextraction for enhancing the trace elements uptake from soil to plants. But application of EDTA can cause ground water contamination, which is potentially a risk for human health. In this study EDTA-enhanced phytoextraction of Cd and Pb by Marigold. was evaluated. Application of EDTA could significantly increase Cd and Pb accumulation in the various part of plants, but EDTA addition also increased the Cd and Pb concentration in leached water about 8 to 12 time and 50 to 75 times respectively compared to the control. So, insitu application of EDTA can be potentially risk to ground water contamination with trace elements.
Keywords— EDTA, leached water, Marigold, phytoextraction.
Abstract— The toxic effect of oil on a gramineae species – rye S. cereale L. has been studied. When introducing oil into soils it has been found that the soil fraction with the particle size being 0.05-0.45 mm absorbs the oil least of all. Here, the distribution of the estimated polyaromatic hydrocarbons is directly dependent on the portion of the size fractions of the soils under study. During the experiments the oil loss from the soils amounts to ~17 %, which is due to the possible oil decomposition by the plant roots and partial evaporation of oil from the soil surface. With the oil content being 9 %, the young rye shoots are suppressed, but the biomass is quite viable, which is evidenced by IR spectroscopy and morphological indicators. However, chromosome disturbances have been observed as a result of cytogenetic studies of the root system of rye, which are associated, among other things, with the effect of the soil particle agglutination around the root system. This may disturb the chloroplast motionin the cells, giving rise to anomalies in cell structures. Thus, the conducted experiments can indicate that rye can be applied for the phytoremediation of soils polluted by oil spills.
Keywords— oil, rye S. cereale L., chtomatography, distribution, toxicity.
Macrobenthic Invertebrate assemblage along gradients of the river Basantar (Jammu, J&K) in response to industrial wastewater
Abstract— A limnological investigation was carried out in River Basantar in the Jammu province of Jammu & Kashmir (India) during the period from December, 2009 to November, 2011 in order to analyse the effect of industrial pollution on the diversity and population density of Macrobenthic invertebrate fauna along the longitudinal profile of the river. A total of 27 macrobenthic invertebrate taxa inhabited the river; among these Arthropoda dominated the macrobenthic community (81.48%, 22 species) followed by Annelida (11.11%, 3 species) and Mollusca (7.41%, 2 species). The Discharge Zone (St II) had the highest mean standing crop of macrobenthic population while the lowest species number. Oligochaetes (Annelida) and Dipterans (Arthropoda) exhibited their abundance at polluted sites whereas Odonates, Ephemeropterans, Hemipterans, Coleopterans (Arthropoda) and Molluscs were abundant at least polluted sites. Tubifex tubifex, Branchiura sowerbyi, Limnodrillus hoffmeisteri, Chironomus, Tubifera, Psychoda and Physa acuta were identified as pollution indicator taxa while Progomphus, Cloeon, Baetis and Gyraulus as sensitive taxa.
Keywords— Pollution, Diversity, Macrobenthic Invertebrate, Indicator taxa.
Abstract— Long terminal repeat retrotransposons (LTR-RTs), the major genomic components in plants, can be classified into autonomous and nonautonomous elements based on their internal structures and retrotranspositional properties. Large numbers of nonautonomous elements have been identified, but the factors, and mechanisms that govern their retrotranspositional processes are poorly understood. Here we summarize the recent advance of LTR-RTs in plants, and discuss how nonautonomous LTR-RTs were generated, proliferated and evolved in their host genomes, with an emphasis on the discussion of the partnership and interaction between nonautonomous elements and their autonomous partners. Thus this review will provide insights into the evolution of nonautonomous LTR-RTs, and facilitate our full understanding of the retrotranspositional process of LTR-RTs in plants.
Keywords— Retrotansposons, long terminal repeats, evolution, plants.
Identification of Ralstonia Solanacearum in Kyrgyzstan’s Potato Fields and the Possibility of Using Biocontrol Agents Against this Pathogen
Abstract— In this study, we have used well-known, efficient methods and bioassay for systematic screening of R. solanacearum for identification of its phenotype and biochemical profile, as well as for pathogenicity and virulence. As a result, an aggressive race — Biovar 3 — was most isolated from the potato fields of the Issyk-Kul region, especially in fields where the Picasso variety was grown. The isolated indigenous strains of Streptomyces diastatochromogenesstrain sk-6 and Streptomyces bambergiensis strain k1-3 has the potential to be used as a biocontrol agent for the management of the bacterial wilt of potatoes, as indicated by the reduced percentage wilt incidence. Root zone and soil application of Streptomyces diastatochromogenesstrain sk-6 and Streptomyces bambergiensis strain k1-3 at a dose of 108 cell/ml significantly reduced disease incidence and increased the growth of potato plants. The disease’s progress was reduced by 60% and 56% in plants inoculated with Streptomyces diastatochromogenesstrain sk-6 and Streptomyces bambergiensis strain k1-3, respectively.
Keywords— bacterial wilt of potatoes, biocontrol, R. solanacearum,Streptomyces diastatochromogenes, Streptomyces bambergiensis.
Abstract— The present study was conducted at Banana Tissue Culture lab of Regional Plant Resource Centre, Bhubaneswar, Odisha to obtain a standardized micropropagation protocol supplemented with different concentrations and combinations of cytokinins and auxins for Musa cv. Yangambi Km-5 (AAA) variety. Data collected for in vitro culture consists of the following parameters: days for bud initiation, rate of shoot proliferation (%), growth value (gm) and number of multiple shoot buds during multiplication stage. Remarkable effects of Cytokinins and Auxins were observed in Yangambi Km-5. Out of various treatments, best concentration for multiple shoot in short period of time for Yangambi Km-5 was found in mediums 3 mg/l BAP + 0.5 mg/l IAA + 0.25 mg/l NAA + 100 mg/l ADS and 1.5 mg/l BAP + 1.5 mg/l KN + 1 mg/l IAA + 0.25 mg/l NAA + 100 mg/l ADS. Maximum growth value, rate of proliferation and number of shoot buds was obtained from explants culture medium 3 mg/l BAP + 0.5 mg/l IAA + 0.25 mg/l NAA + 100 mg/l ADS.
Keywords— Micropropagation, growth regulators, Yangambi Km-5, Musa spp.