Biological control of Melolontha melolontha L larvae with entomopathogenic bioinsecticide based on Beauveria brongniartii

Published in Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1
Written by Ana-Cristina FATU, Mihaela-Monica DINU, C. CIORNEI, Ana-Maria ANDREI

From 2010 to 2013 tests were conducted with entomopathogenic bioproduct based on Beauveria brongniartii, in nurseries of the Botosani, Neamt and Suceava Forest Departments. At RDPP Bucharest a technology for multiplication on nutrtive solid substrate of entomopathogenic fungus B. brongniartii was developed, on the basis of which the experimental bioinsecticide BioMelCon (G) was obtained. Soil treatments were performed with the BioMelCon (G) in doses ranging from 100 to200 kg/ha. The tested dosages were achieved by applying two treatments per year. Application of biological product held generally early spring on surfaces free from crops, to ensure a uniform distribution and to create the possibility of periodic inspection of the treatment effect by soil surveys. Checking the effectiveness of treatment was carried out in several stages, in different site conditions. The paper presents results concerning the effect of applying several biological treatments on Melolontha melolontha larvae (L2-L3). The cumulative effect of the biological product and the agricultural practices of experimental fields have led to a decreased density of larval populations under economic threshold level

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Ana-Cristina FATU, Mihaela-Monica DINU, C. CIORNEI, Ana-Maria ANDREI 2015, Biological control of Melolontha melolontha L. larvae with entomopathogenic bioinsecticide based on Beauveria brongniartii. Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1, PRINT ISSN 2285-5718, 64-69.

Calcium alleviates stress in plants: insight into regulatory mechanisms

Published in AgroLife Scientific Journal, Volume 3, Number 2
Written by Elena DELIAN, Adrian CHIRA, Liliana BADULESCU, Lenuta CHIRA

Plants as sessile organisms are constantly exposed to different stressors incidence: biotic and / or abiotic factors. Consequently, the viability of plants depends on their ability to perceive the changes that occur in their natural environment (either beneficial or harmful) and to appropriately respond physiologically, biochemically, and in terms of their development, to overcome and to counter the possible destructive effects. Plasma membrane, as the main selective barrier between the plant cell and the environment have different receptor proteins in its structure, to sense various external stimuli and transduce them to downstream intra- and intercellular signalling networks. An universal signal molecule is calcium and the calcium-sensing is of fundamental importance for extracellular calcium signalling and calcium homeostasis. Calcium is an important second messenger in signal transduction pathways, mediating various defence responses to the action under environmental stresses and in the regulation of many developmental processes in plants, being one of the most studied second messengers both in plant and animal fields. This brief review summarizes some results of recent research on the involvement of calcium in plant responses to stress factors action, addressing in particular scientific and practical importance of such knowledge, in order to improve plant tolerance to stress factors.

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Elena DELIAN, Adrian CHIRA, Liliana BADULESCU, Lenuta CHIRA 2014, Calcium alleviates stress in plants: insight into regulatory mechanisms. AgroLife Scientific Journal, Volume 3, Number 2, ISSN 2285-5718, 25-30.

CASE STUDY IN TRACEABILITY AND CONSUMER'S CHOICES ON FISH AND FISHERY PRODUCTS

Published in AgroLife Scientific Journal, Volume 5, Number 2
Written by Carmen Georgeta NICOLAE, Nicoleta IȘFAN, Gratziela Victoria BAHACIU, Monica Paula MARIN, Liliana Mihaela MOGA

The food market needs are generated by human social needs. Thus, fish and fishery products traceability involves the knowing of the issues related to distribution chain of the fishery products. Aspects as safety and quality along the distribution chain are identified and this is necessary to be known in order to eliminate the differences between the social needs and requests. For preventing the Malassis effect and maintaining the food request beyond the saturation area, it needs to know the consumer typology. In order to have a wide and clear image of the fish and fishery market, we have conducted a study on 176 consumers. The items were structured in a certain way which allowed us, after data processing, to identify the consumption and buying habits by age category, living environment and occupational field of the subjects. The statistic interferences shown that people aged between 30-55 years (82.60%) prefer live fish, young people, younger than 30 years (60.97%) prefer fresh fish and/or seafood (43.90%). The most of the respondents (60.00%) prefer to buy from specialized stores (fisheries) and 27.50% direct from the producer. The analysis of the factors that influence the consumer decision to buy fish / fishery products shown that are interesting in the conditions of fish deposit and exploitation (maximum 84%). The results of this study can serve as an informing material for the fish processing area and industry. This is offering a commercial diagnosis of the market, accordingly to the influence of the use of information provided by traceability, on the intention to buy fish /fishery products in the future.

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NICOLAE C.G., IȘFAN N., BAHACIU G.V., MARIN M.P., MOGA L.M. 2016, CASE STUDY IN TRACEABILITY AND CONSUMER'S CHOICES ON FISH AND FISHERY PRODUCTS. AgroLife Scientific Journal, Volume 5, Number 2, ISSN 2285-5718, 103-107.

CAUSES AND SOLUTIONS FOR THE REMEDIATION OF THE POOR ALLOCATION OF P AND K TO WHEAT CROPS IN ROMANIA

Published in AgroLife Scientific Journal, Volume 5, Number 1
Written by Florin SALA, Ciprian RUJESCU, Cristian CONSTANTINESCU

The aim of the present study was to establish the main cause of the poor allocation of PK fertilizers to wheat crops, as this phenomenon has been observed in Romania. The experimental research consisted in differentiated allocation of fertilizers with N and the PK complex in order to create controlled nutrition deficits. It was conducted within the Didactic Station in Timisoara, from 2012 to 2014. Based on the yields obtained and on the associated economic elements, two scenarios were used: variation of wheat selling price and the price of fertilizers; each scenario had several variants. For each variant, the study assessed the optimal dose of N and PK respectively that resulted in the maximum profit. The model employed for this purpose was a model given by the production function verified by experimental data. The results were analysed and processed with SPSS and the graphic representations with Wolfram Alpha. The study discovered that the main cause of the Romanian farmers’ low interest in using PK fertilizers is the dissonance between the cost of PK fertilizers and the low market price of wheat. Given the current price of wheat - between 0.5 - 0.6 lei/ kg-1, the authorities have to adopt incentive pricing for PK fertilizers in order to stimulate the use of such fertilizers by Romanian farmers. These measures will result not only in better quality and quantity of the yield, but also in medium and long-term improvement of soil fertility.

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SALA F., RUJESCU C., CONSTANTINESCU C. 2016, CAUSES AND SOLUTIONS FOR THE REMEDIATION OF THE POOR ALLOCATION OF P AND K TO WHEAT CROPS IN ROMANIA. AgroLife Scientific Journal, Volume 5, Number 1, ISSN 2285-5718, 184-193.

Classification of genus Triticum sensu lato and sensu stricto based on spike and grain morphology

Published in Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1
Written by Hristo P. STOYANOV

The formulation of the present classifications of species of the genus Triticum associates mainly with several plant morphological factors such as fragility of the spikes spindle, grains threshability, grain sphericity, shape and position of glumes, lemmas and paleas and awns, compactness, etc. Special attention is paid to the factor "cultural/wild" form, the ploidy and the genomic constitution of the species, often supported by molecular data which provides considerable comfort in disclosing phylogenetic features in a particular taxonomic unit. Such taxonomic determination is associated with certain disadvantages. It is not sufficiently focused on the spike morphology related to the reproductive apparatus of the plant, and also the causes of phylogenetic differentiation of certain parameters, such as spike branching, multiple spikelets, as well as the ratios of quantitative properties. The existing classifications do not give a precise answer to the taxonomic position of amphidiploids in the genus Triticum, and also for those obtained from hybrid combinations with genera Aegilops, Secale, Haynaldia, Hordeum, Elymus, Leymus, Elytrigia, Agropyron, as transitional and similar forms. Based on studies of spike and grain morphology of a large number of representatives of the genus Triticum and other interspecific and intergeneric amphidiploid forms, a classification of the genus sensu lato and sensu stricto is composed. Sensu stricto, genus Triticum covers all existing wild and cultivated known wheat forms, together with interspecific artificial synthetic forms. Sensu lato, the genus includes intergeneric hybrids, for which a specific generic epithet was coined - ×Triticum, and also a specific epithet, consistent with the originator of the amphidiploid. Special attention was paid to species and amphidiploids with the genus Aegilops. Classification sensu strictissimo was also formulated where the genus Triticum brings together only diploid species, but natural amphidiploids are separated as genus Aegilotriticum, and artificial as genus ×Aegilotriticum, and the remote intergeneric amphidiploids are not subject to the classification. Drawn up in this way, the classifications cover morphological and ecological, evolutionary and phylogenetic features of the representatives of the genus Triticum

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Hristo P. STOYANOV 2015, Classification of genus Triticum, sensu lato and sensu stricto, based on spike and grain morphology. Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1, PRINT ISSN 2285-5718, 176-185.

CLIMATE CHANGE TRENDS IN SOME ROMANIAN VITICULTURAL CENTERS

Published in AgroLife Scientific Journal, Volume 5, Number 2
Written by Georgeta Mihaela BUCUR, Liviu DEJEU

The evolution of temperature indicators, more pronounced in the north of Romania, clearly shows a gradual warming trend, mainly during the growing season, especially during the ripening of the grapes. There have been highlighted relatively large differences between the values of the main bioclimatic indicators of the country's wine regions, as well as a stronger growth trend of these ones in the northern areas and at the Black Sea. The viticultural region of Dobrogea hills profits by maritime influences that limit summer temperature extremes and winter frost. There is evidence that in many regions, day temperature increased more than night temperature. Results show that Romanian viticulture will benefit from climate change. Given these trends and knowing their possible negative effects on vine physiology, production and quality, the future viticultural zoning requires reconsideration, and the application of technological measures to minimize the negative effects of climate change.

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BUCUR G.M., DEJEU L. 2016, CLIMATE CHANGE TRENDS IN SOME ROMANIAN VITICULTURAL CENTERS. AgroLife Scientific Journal, Volume 5, Number 2, ISSN 2285-5718, 24-27.

Coliform bacteria contamination profiling of raw milk cheeses using statistical assessment of typelinked correlations

Published in AgroLife Scientific Journal, Volume 3, Number 2
Written by Mara GEORGESCU, Constantin SAVU, Iuliana NEAGU, Dragos GEORGESCU

In the light of the current trend of increasing consumption of ecological, unprocessed and slow food, hygiene-associated microbiological drawbacks of raw milk cheeses are still an issue. This study was designed for the coliforms contamination assessment of multiple types of raw milk cheeses manufactured by local producers. The paper is focused on searching for possible correlations between the sample type and coliform bacteria contamination, using the chisquared test of significance for statistical processing of the data. The results for a total sample size of 253 cheeses indicated significant associations (p<0.0005) between salting, smoking, milk origin and cheese recipe, on one hand and coliform bacteria contamination on the other hand. No significant association (p=0.438) was found between coliforms and whey-cheese versus milk-cheese classification parameter.

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Mara GEORGESCU, Constantin SAVU, Iuliana NEAGU, Dragos GEORGESCU 2014, Coliform bacteria contamination profiling of raw milk cheeses using statistical assessment of typelinked correlations. AgroLife Scientific Journal, Volume 3, Number 2, ISSN 2285-5718, 35-38.

COMPARATIVE STUDY OF IN VITRO, EX VITRO AND IN VIVO PROPAGATED Salvia hispanica (CHIA) PLANTS: MORPHOMETRIC ANALYSIS AND ANTIOXIDANT ACTIVITY

Published in AgroLife Scientific Journal, Volume 5, Number 2
Written by Ely ZAYOVA, Milena NIKOLOVA, Ludmila DIMITROVA, Maria PETROVA

A tissue culture technique for micropropagation of chia (Salvia hispanica L.) was established. High percentage of seed germination (100%) was recorded on Murashige and Shoog medium enriched with 0.4 mg l-1 gibberellic acid and 10 mg l-1 ascorbic acid after one week of culture. The maximum number of shoots per explant (2.7) gave MS medium with 2 mg l-1 6-benzylaminopurine after five weeks of culture. The best plant rooting was achieved on half-strength MS medium with 0.1 mg l-1 indole-3-butyric acid after four weeks of culture. The multiple plants were successfully ex vitro adapted with 95% survival. After six months under field conditions, important morphometric traits of ex vitro and in vivo derived plants were evaluated. Some morphological characteristics as plant height, leaf size, number of branches and leaves per plant were influenced by the propagation way. Differences between extracts of in vitro, ex vitro and in vivo developed plants in regard to free radical scavenging activity, flavonoid and lipid composition were not established. This is the first comparative study of micropropagated and in vivo seed derived chia plants. The study presents also for the first time data for antioxidant potential and lipid components of leaves of S. hispanica.

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ZAYOVA E., NIKOLOVA M., DIMITROVA L., PETROVA M. 2016, COMPARATIVE STUDY OF IN VITRO, EX VITRO AND IN VIVO PROPAGATED Salvia hispanica (CHIA) PLANTS: MORPHOMETRIC ANALYSIS AND ANTIOXIDANT ACTIVITY. AgroLife Scientific Journal, Volume 5, Number 2, ISSN 2285-5718, 166-174.

Costbenefit analysis of bioconversion neufchatel whey intorectified ethanol and organic liquid fertilizer in semi pilot scale

Published in Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1
Written by Gemilang Lara UTAMA, Lobo Balia ROOSTITA, Tubagus Benito Achmad KURNANI, SUNARDI

Aims of the study was to determine the cost-benefit analysis in neufchatel whey bioconversion into rectified ethanol and organic liquid fertilizer. Bioconversion whey into rectified ethanol and organic liquid fertilizer has shown great potential as a way to reduce the pollution resulting from cheese-making process. Semi pilot scale experiment was done to ferment 5 L neufchatel whey using 5% K. lactis at 33°C for 24 h in semi anaerobic plastic container without agitation and then distilled into 96.2% purity. Data collected and analyzed descriptively related to benefit cost ratio/BCR, net present value/NPV and internal rate returns/IRR. The result showed that semi pilot scale bioconversion of neufchatel whey resulting in 106.42 ml rectified ethanol and 4404.22 ml distillery residue. Economic benefit could achieved by the support of distillery residue sales as organic liquid fertilizer.

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Gemilang Lara UTAMA, Lobo Balia ROOSTITA, Tubagus Benito Achmad KURNANI, SUNARDI 2015, Cost-benefit analysis of bioconversion neufchatel whey intorectified ethanol and organic liquid fertilizer in semi pilot scale. Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1, PRINT ISSN 2285-5718, 192-196.

DETERMINATION OF HEATING REQUIREMENTS AND ENERGY CONSUMPTION OF GREENHOUSES IN ADANA REGION OF TURKEY

Published in AgroLife Scientific Journal, Volume 5, Number 1
Written by H. Huseyin OZTURK, H. Kaan KUCUKERDEM

In this study, the heating loads of plastic greenhouses were determined based on long term meteorological data in Adana region of Turkey. Considering the air temperature requirements of warm season species, energy consumptions were calculated for heating periods. If the monthly average low temperatures are considered as the outside air temperature, when the air temperature in the greenhouse is considered as in 180C, the average greenhouse heating load is 64.4 W/m2, during the October-May heating period. However, when the air temperature in the greenhouse is considered as in 150C, the average greenhouse heating load is 44.5 W/m2 during the same period. The average energy consumption for 1 da greenhouse heating (Tg=150C) is 176 MJ/h, during the October-May heating period.

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OZTURK H.H., KUCUKERDEM H.K. 2016, DETERMINATION OF HEATING REQUIREMENTS AND ENERGY CONSUMPTION OF GREENHOUSES IN ADANA REGION OF TURKEY. AgroLife Scientific Journal, Volume 5, Number 1, ISSN 2285-5718, 157-160.


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