INFLUENCE OF SOME NPK FERTILIZERS WITH PROTEIN HYDROLYSATES ON SUNFLOWER CROP

Published in AgroLife Scientific Journal, Volume 6, Number 1
Written by Daniela MIHALACHE, Ana Maria STĂNESCU

Organic substances, such as: protein hydrolysates of animal origin (composed of peptides, ureide and amino acids) and protein hydrolysates of vegetal origin (algae extracts) can be successfully used to obtain new fertilizers formulas. These natural protein hydrolysates are embedded in different NPK matrix that contains meso and microelements, i.e. Fe, Cu, Zn, Mn, Mg, S, Co, Mo, resulting thus a variety of foliar fertilizers that can be used in both, conventional and organic farming (especially to protect crops from stress factors, climatic accidents and to prevent or correct nutritional deficiencies). The efficacy of these foliar fertilizers was tested in the National Network for Fertilizers Testing on sunflower crop. The tested products showed a favorable influence on sunflower seeds production by stimulating the accumulation of biomass and increasing the number of seeds/capitulum. The obtained results showed significant production yields, statistically insured.

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MIHALACHE D., STĂNESCU A.M. 2017, INFLUENCE OF SOME NPK FERTILIZERS WITH PROTEIN HYDROLYSATES ON SUNFLOWER CROP. AgroLife Scientific Journal, Volume 6, Number 1, ISSN 2285-5718, 159-165.

Influence of some technological factors on grain sorghum Sorghum bicolor L Moench var Eusorghum yield grown under the conditions of Southeastern Romania

Published in Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1
Written by Cristina Andreea OPREA, Doru Ioan MARIN, Ciprian BOLOHAN

Our research was aimed to analyse the behavior of the grain sorghum (Sorghum bicolor L. Moench var. Eusorghum) grown under the ecological conditions of Southeastern Romania (Moara Domneasca, Ilfov county), and to assess its yield potential. Research was based on a split plot experiment where the following factors were analyzed: Factor A – grain sorghum hybrids with three graduations - Alize, Aquilon, Arack, Factor B - distance between rows with two graduations – at 70 cm and 50 cm, Factor C - fertilization treatments with 10 graduations – N0P0K0 (Control), N60P0K0, N90P0K0, N120P0K0, N90P60K0, N90P60K0+foliar fertilization, N90P60K60, N90P60K60+foliar fertilization, N120P60K0, N120P60K60. In the field conditions of the 2013-2014 agricultural year, grain sorghum crop produced a total average biomass (September, 2014) that varied from 26.59 t/ha in the hybrid Arack to 26.70 t/ha in the hybrid Alize at 70 cm distance between rows, and between 26.71 t/ha in the hybrid Alize and 27.75 t/ha in the hybrid Arack at the distance of 50 cm between rows. Depending on the fertilization rates, the total biomass at 70 cm between rows ranged from 19.18 t/ha in the hybrid Arack unfertilized to 31.69 t/ha in the hybrid Aquilon fertilized N120P60K60+fertilization during the vegetative period. At the distance of 50 cm between rows the total biomass according to the fertilization rates varied between 19.14 t/ha in the hybrid Alize unfertilized and 31.77 t/ha in the hybrid Aquilon fertilized N120P60K60+fertilization during the vegetative period. The average grain yield for the three hybrids, depending on the fertilization rates, varied from 6 t/ha (Ct) to 10.6 t/ha (N120P60K60+fertilization during the vegetative period) for the distance of 70 cm between rows and from 6.2 t/ha (Ct) and 10.4 t/ha (N120P60K60+fertilization during the vegetative period) for the distance of 50 cm between rows.

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Cristina Andreea OPREA, Doru Ioan MARIN, Ciprian BOLOHAN 2015, Influence of some technological factors on grain sorghum (Sorghum bicolor (L.) Moench var. Eusorghum) yield grown under the conditions of Southeastern Romania. Scientific Papers. Series "AgroLife Journal", Vol. 4 ISSUE 1, PRINT ISSN 2285-5718, 123-130.

INFLUENCE OF SOWING PERIOD AND FERTILIZATION ON THE NAKED OAT CROP GROWN IN THE ILFOV COUNTY

Published in AgroLife Scientific Journal, Volume 5, Number 1
Written by Doru Ioan MARIN, Ciprian BOLOHAN, Cristina Andreea OPREA, Leonard ILIE

Naked oat is a spring cereal crop with a good yield potential and high nutritional grain value owing to its high content of protein, fiber, fat and minerals. The trend of climate change by increasing temperatures and aridity has a negative influence upon plant growth and crop yield stability. Analyzing the evolution of climatic conditions for the Ilfov area (Southeastern Romania) in the past 10 years (2006-2015), we observed an increase in average temperature by 1.50C and a decrease in the annual rain autumn amount by 45.4 mm. Research was conducted for the naked oats crop (GK Zalan variety) and the purpose was to analyze plant growth and yield potential by sowing the crop in autumn, as compared with the spring crops and the influence of mineral fertilization. All the analyzed parameters (panicles/sqm; number of panicle/plant; yield grain /panicle; thousand grains weight; hectolitre mass, grain yield) had maximum values for the autumn sowing period (October) and N100P50 fertilization level. Grain yield was 3,962 kg.ha-1 exceeding the spring crop yield by 55% (2,550 kg.ha-1).

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MARIN D.I., BOLOHAN C., OPREA C.A., ILIE L. 2016, INFLUENCE OF SOWING PERIOD AND FERTILIZATION ON THE NAKED OAT CROP GROWN IN THE ILFOV COUNTY. AgroLife Scientific Journal, Volume 5, Number 1, ISSN 2285-5718, 127-130.

Influence of sowing time on the expression of barley and wheat plants physiology

Published in AgroLife Scientific Journal, Volume 3, Number 2
Written by Nicolae IONESCU, Aurelian PENESCU, Sorin Gabriel IONESCU

Tipically, in our autumn wheat and barley have sown in a relatively wide range, due to variuos causes: climate (Slater, 1976), management etc. To clarify what would be the most appropriate range for the plants to know the physiology of the most favorable, decadal have experienced many moments of sowing several years. Period was thus between Sept. 10 and Nov. 1 (6 points sowing). Plants were studied by several indices for physiology expression (Stoy, 1969) i.e. leaf area index (LAI), the photosynthetic potential by leaf area duration (LAD), net assimilation rate (NAR) and grain yield. Among these features were found match, but on the contrary, some are even contradictory. Thus, if the maximum LAI of wheat was obtained from Oct. 1 (9.2 m2 leaf/m2 soil), the maximum photosynthetic potential was still to Oct. 1 (1.48 km2 leaf x day), and maximum net assimilation rate was obtained in Oct. 10 (6.63 g d.m./m2/day). LAI of barley was Oct. 1 (7.4 m2 leaf/m2 soil), maximum LAD Sep. 20 (1.11 km2 leaf x day), and maximum NAR Oct. 10 (7.05 g d.m./m2/day). In these conditions, the maximum grain production was formed for wheat in Oct. 1 with an extension until Oct. 20. Winter barley was maximum in Oct. 1 with an extension from Sept. 20 until Oct. 10.

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Cropotova J., Popel S., Colesnicenco A. 2014, Influence of sowing time on the expression of barley and wheat plants physiology. AgroLife Scientific Journal, Volume 3, Number 2, ISSN 2285-5718, 39-43.

INPUT USAGE AND PROBLEMS IN GREEN BEAN PRODUCTION: A CASE OF BURDUR PROVINCE, TURKEY

Published in AgroLife Scientific Journal, Volume 6, Number 1
Written by Mevlüt GÜL, Halil PARLAK

The production of green beans increased by 6.5 times from 3,106 tons in 1991 to 20,199 tons in 2015 in Burdur. In this study, it was aimed to reveal the use of inputs and problems of farmers who produce green beans in Burdur province. The study was carried out in the central district of the province of Burdur, where the production of green beans was the most intensive. Stratified sampling method was applied and the number of samples according to this method was determined as 112 farmers. Data were obtained by the face-to-face survey method. Sales quantities of farmers in the region varied depending on the cultivation area and yield of green bean. It was found that the use of unit labour in the unit area was 251.72 MLU hours in the production of green beans. Machine power usage was calculated as 2.18 hours per decares. The amount of seed used was 8.20 kilograms. The most important criterion in the preference of green bean cultivation was the high possibility of irrigation and productivity in the region. Sale of green beans starts at the end of July and lasts until the 15th of September. The prices of green beans were largely determined by the companies. Farmers sell their products wholesaler-trader. It can be said that the cultivation of green bean cultivation will continue through the factors such as the suitability of climate conditions, irrigation opportunities in the region, high yields and inadequate supply. However, the presence of a single collection center for the sale of products in the region is perceived as a threat. It can be stated that the producer's activity in the market may be more prominent with the establishment of the producer association and the development of organizational awareness in green bean growers in the region.

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GÜL M., PARLAK H. 2017, INPUT USAGE AND PROBLEMS IN GREEN BEAN PRODUCTION: A CASE OF BURDUR PROVINCE, TURKEY. AgroLife Scientific Journal, Volume 6, Number 1, ISSN 2285-5718, 133-140.

IRRIGATION FACILITIES, PROBLEMS AND SOLUTIONS CONCERNING PISTACHIO GROWING IN SIIRT REGION

Published in AgroLife Scientific Journal, Volume 5, Number 1
Written by Yusuf AYDIN, Burak SALTUK, Atılgan ATILGAN, Ali YÜCEL, Koray ÖZRENK

Growing of Siirt type of pistachio has a significant potential in the agriculture of Siirt province. As a result of the studies on this issue performed by public and legal institutions in recent years, while about 2000 tons of products were taken from the area in 4545.3 ha in 2002, these values reached about 11.000 tons of products in 25.000 ha by the end of 2014. Considering the climatic conditions of the region, the fact that summer is very hot and irregularity in the precipitation regime further increase the importance of irrigation and make it necessary for cultural practices in farming. However, pistachio orchards are not irrigated or tried to be contented with a little water due to the reasons such as the topographical structure of the area where farming is performed, irrigation water constraints, and any other reasons. The questionnaire study was carried out to determine the local farmers' tendencies on Siirt pistachio irrigation, problems faced, and the solution offers. For this purpose, the questionnaire form consisting of 40 questions was prepared, and data were collected using the Simple Random Sampling method. By this method, questionnaires were filled in by making face to face interviews with 177 farmers in 73 villages of 7 districts where farming is intensively performed. The obtained data were analyzed using MINITAB 16 statistical program. As a result of the statistical analyses, an attempt to contribute to the solution of the problems was made by developing solutions to identified problems.

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AYDIN Y., SALTUK B., ATILGAN A., YÜCEL A., ÖZRENK K. 2016, IRRIGATION FACILITIES, PROBLEMS AND SOLUTIONS CONCERNING PISTACHIO GROWING IN SIIRT REGION. AgroLife Scientific Journal, Volume 5, Number 1, ISSN 2285-5718, 21-30.

IS THERE A NITROGEN DEFICIT IN ROMANIAN AGRICULTURE?

Published in AgroLife Scientific Journal, Volume 6, Number 1
Written by Alena SCHMIDT, Dragoș SMEDESCU, Gabriele MACK, Gina FÎNTÎNERU

Nitrogen (N) is a key nutrient in agriculture production. While most of the European countries have a highly positive N gross balance (Leip et al., 2011; EUROSTAT, 2017), Romania had a negative gross N balance in the year 2013. A positive N balance indicates the risk of pollution by nitrate (N03-), ammonia (NH4+) and nitrous oxide (N20). In contrast, a negative N balance might show the risk of soil depletion. We estimated an N soil surface balance and assessed the potential uncertainties in the data as well as the relation between N inputs and N outputs. The Romanian agriculture has a high N use efficiency of 0.99. Over the last 20 years we observed a slightly positive N soil surface balance of 0.1 kg per ha. The average N inputs accounted for around 40 kg N per ha. The fluctuation of the N soil surface balance between the years is high and mainly caused by the high fluctuation of N outputs, as due to weather fluctuations and plant pest, the yield does not achieve its’ potential yield. However, the method of soil surface balance has some drawbacks, as farm internal fluxes are separated. Therefore, the calculation of an N farm gate balance would add some benefits as it is regarded as more precise due to the consideration of animal production.

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SCHMIDT A., SMEDESCU D., MACK G., FÎNTÎNERU G. 2017, IS THERE A NITROGEN DEFICIT IN ROMANIAN AGRICULTURE?. AgroLife Scientific Journal, Volume 6, Number 1, ISSN 2285-5718, 243-248.

LACTIC ACID BACTERIA AS METAL QUENCHERS TO IMPROVE FOOD SAFETY AND QUALITY

Published in AgroLife Scientific Journal, Volume 6, Number 2
Written by Ami PATEL, Aparna SV, Nihir SHAH, Deepak Kumar VERMA

Lactic acid bacteria (LAB) have long history of safe use in diverse fermented dairy and food products and offers health enlivening possessions as probiotics. Apart from this, recently, several Lactobacillus and Bifidobacterium spp. have been found to bind with metal ions through metabolism independent mechanism like surface binding by adsorption and ion exchange. The major contaminants encountered in milk and other food products chiefly include pesticide residues, heavy metals, and aflatoxin M1. Milk may get contaminated before milking from the cattle feed, sources/materials employed during the milk processing and inappropriate handling of milk during the pre- and post-processing period. It will ultimately lead to magnification of the specific metal or related contaminants in the finished product. The bioquenching/biosorption abilities of LAB will help to formulate natural treatments to decrease metal toxicity from drinking water, dairy and food products as well as within human body through development of functional foods and nutraceuticals.

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PATEL A., Aparna SV, SHAH N., VERMA D.K. 2017, LACTIC ACID BACTERIA AS METAL QUENCHERS TO IMPROVE FOOD SAFETY AND QUALITY. AgroLife Scientific Journal, Volume 6, Number 2, ISSN 2285-5718, 146-154.

LEVELS OF PERSISTENT ORGANOCHLORINE COMPOUNDS IN SEWAGE SLUDGE FROM WASTEWATER TREATMENT PLANTS

Published in AgroLife Scientific Journal, Volume 6, Number 2
Written by Mihaela PREDA, Veronica TĂNASE, Nicoleta Olimpia VRÎNCEANU

The use of sewage sludge as fertilizer in agricultural soils is considered an economical way to use the high amounts produced by wastewater treatment plants. Besides the benefit, meaning high content of organic matter and nutrients, sewage sludge can have a negative impact on environment because it can contain persistent organic pollutants or heavy metals. The aim of this study is to establish the level of polychlorinated biphenyls (PCBs) and organochlorine insecticides in sewage sludge collected from 10 wastewater treatment plants. The PCB IUPAC no. 28, 52, 101, 118, 138, 153, 180 and ten organochlorines were extracted with organic solvents, purified with copper and silicagel and analysed by gas chromatography/time of flight mass spectrometry. The concentration of total PCBs ranged from 3ng/g to 59.2ng/g dry weight, levels below the upper limit for land application according to Romanian legislation law for agricultural use. The predominant congeners found in sewage sludge were PCB 28, PCB 52 and PCB 138. PCB homologue profiles are dominated by Tri-CBs and Tetra-CBs. The contamination of sewage sludge samples with organochlorine insecticides refers only to the presence of DDE and dieldrin. The other insecticides (aldrin, HCH, ppDDT and ppDDD) are undetectable.

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PREDA M., TĂNASE V., VRÎNCEANU N.O. 2017, LEVELS OF PERSISTENT ORGANOCHLORINE COMPOUNDS IN SEWAGE SLUDGE FROM WASTEWATER TREATMENT PLANTS. AgroLife Scientific Journal, Volume 6, Number 2, ISSN 2285-5718, 161-166.

Linguatula serrata (PENTASTOMIDA: LINGUATULIDAE) INFECTION IN DOG, ROMANIA: A CASE REPORT

Published in AgroLife Scientific Journal, Volume 5, Number 2
Written by Mariana IONIŢĂ, Ioan Liviu MITREA

Linguatula serrata (Pentastomida: order Porocephalida, family Linguatulidae) is a cosmopolitan parasite inhabiting as adults the nasal passages and frontal sinuses of wild and domestic canids (dogs, foxes), which serve as definitive hosts. Cattle, sheep, goats, camels, rabbits, and other animals serve as intermediate hosts, in which fully developed nymphs, the parasitic stage infective for carnivores, are found encysted mainly in the mesenteric lymph nodes, lungs, liver, or serous membranes. Although man is accidental/aberrant host, the reports of human infection with this parasite, as visceral or nasopharyngeal (“Halzoun” or “Marrara syndrome”) linguatulosis is not uncommon, particularly in the Middle East where high infection rates are registered. Here we report a case of Linguatula serrata infection in a dog rescued from a suburban area, in southern Romania. The dog was an approximately 6- months-old male of mixed breed which had a history of free-roaming life and which had been rescued by the dog owner in late November, 2012. Several months later, on March 2013, about few days after a treatment with a macrocylic lactone (ivermectine), the dog had expelled by sneezing several worm-like parasites. The parasite specimens were morphologically identified as adults of L. serrata. The epidemiological aspects of linguatulosis and potential risks of public health and veterinary concern are discussed.

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IONIŢĂ M., MITREA I.L. 2016, Linguatula serrata (PENTASTOMIDA: LINGUATULIDAE) INFECTION IN DOG, ROMANIA: A CASE REPORT. AgroLife Scientific Journal, Volume 5, Number 2, ISSN 2285-5718, 85-89.


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