Search Results

1 - 10 of 90 items :

  • physical tests x
  • Biotechnology x
Clear All
Some Aspects of the Soil Physical Status of the Vine Plantations in the Context of Rural Development

Abstract

The rural development grants - among others - help to promote the competitiveness of the agricultural activities. Plantations take great interest in the southeastern part of Hungary. Farmers need to make soil tests before plantation of fruit and grape. We investigated the distribution of the main physical characteristics in this area. For the establishment of vineyards, the areas were adequate according to the pH, and salt content. The results of the soil tests show some strong relationships between the determined physical parameters.

Open access
Physical Properties of Potato Tubers CV. Analytic Cultivated in Iran

-87. ASAE Standards 1997. S368.2. Compression Test of Food Materials of Convex Shape (44th ed.). American Society for Agricultural Engineering, St. Joseph, Michigan. Fraser B.M., Verma S.S., Muir W.E. 1978. Some physical properties of faba beans. Journal of Agricultural Engineering Research. 22: 53-57. Ghabel R., Rajabipour A., Ghasemi-Varnamkhasti M., Oveisi M. 2010. Modeling the mass of Iranian export onion ( Allium cepa L.) varieties using some physical characteristics. Journal of Research Agriculture Engineering. 56

Open access
Modification of Soil Properties for Blueberry (Vaccinium Corymbosum L.) Cultivation

Abstract

Highbush blueberries are a relatively new crop in Latvia raising interest in farmers who wish to diversify their commercial horticultural activities. It is considered that soil properties are one of the possible shortcomings limiting establishment of high-productive plantations in areas where soil reaction is close to neutral. The research objective was to test the main soil characteristics in a commercial highbush blueberry plantation where initial soil properties were changed as a result of soil modification (deep tillage, peat additions) before planting of bushes and afterwards maintained (mulching with acid peat and sawdust) periodically. The research was carried out in 2011 - in a farm where the blueberry plantation had been established seven years ago. The experimental plots were arranged on a complex slope, by choosing different parts of terrain. Soil - Haplic Cambisol, sandy loam, formed on a low calcareous moraine. Original topsoil’s reaction was pH KCl 5.37. Five experimental plots, each consisting of seven bushes, were set up. Research showed that modification of topsoil significantly changed the physical and agrochemical properties of soil. Soil bulk density reduced, porosity and soil aeration increased. Sphagnum peat (pH KCl 3.0) as a soil modifier allowed efficiently reducing the soil reaction at the soil root zone and provided an optimal environment for blueberries. Soil properties were not the determinant factor that limited establishment of a productive blueberry plantation. Soil properties adjusted accordingly to the requirements of highbush blueberry gave the possibility of establishing plantations also in typical mineral soils that develop on a low calcareous moraine.

Open access
Assessment of different methods of soil suitability classification for wheat cultivation

. Isfahan, Iran: pp. 196-197 (in Persian). Biox LR, Zinck JA (2008): Land-use planning in the Chaco Plain (Burruyacu, Argentina). Part 1: Evaluating land-use options to support cop diversification in an agricultural frontier area using physical land evaluation. Environ Management 42: 1043-1063. Ceballos-Silva A, Lopez-Blanco J (2003a): Delineation of suitable areas for crops using a Multi-Critera Evaluation approach and land use/cover mapping: a case study in Central Mexico. Agr Syst 77: 117-136. Ceballos-Silva A, Lopez

Open access
Energy Balance of Briquette Production from Various Waste Biomass

Agricultural Engineering, Prague, Czech Republic, 156–162. EN 14918 (2010): Solid biofuels – Determination of calorific value. EN 15234-1 (2011): Solid biofuels – Fuel quality assurance. Part 1: General requirements. EN 643 (2014): Paper and board – European list of standard grades of paper and board for recycling. EN 18134-2 (2015): Solid biofuels – Determination of moisture content. Oven dry method. Part 2: Total moisture – simplified method. EN ISO 13061-2 (2014): Physical and mechanical properties of wood – Test methods for small clear wood

Open access
Changes in Physically-Chemical Parameters of Latvian Cranberries During Storage

Abstract

The main purpose of the present research was to investigate the changes in physical-chemical parameters of fresh Latvian cranberries during storage. Cranberry (′Steven′, ′Bergman′, ′Pilgrim′, ′Early Black′, and ′Ben Lear′) fruit were collected at a processing plant in Kurzeme region, Latvia, in the first part of October 2010. For the experiments, also wild cranberries were collected in the bogs of the same region and at the same time. The berries were rinsed with tap water for 3±1 min, then strained for 10±1 min (mainly for visual cleanness), and afterwards stored in closed non-perforated polypropylene (PP) boxes in air ambiance and in glass jars in a cold boiled-water ambiance at 3±1 °C. Quality parameters of the berries were tested each three months using standard methods: vitamin C content - by high-performance liquid chromatography (HPLC); organic acids - by HPLC; moisture - by oven-dry method; colour parameters - by device COLOR TEC PMC; pH - by potentiometric method; anthocyanin - by spectrophotometrical method; and phenolic compounds - by HPLC. The shelf life of cranberries packaged in closed PP boxes in air ambiance was six months, but of cranberries packaged in glass jars in water ambiance - 12 months. The research showed that differences in moisture content, pH value, colour intensity, and anthocyanin content among the cranberry cultivars under different ambient conditions during storage were not significant. During 12 months of cranberry storage in glass jars in water ambiance, the content of vitamin C decreased on average by 90%, organic acids - by 54%, and phenolic compounds - by 60%. During six-month storage in closed PP boxes in air ambiance, the content of vitamin C decreased on average by 99%, organic acids - by 30%, and phenolic compounds - by 34%.

Open access
Evaluation of Non-Fermented Dough from Wheat/Barley/Hemp Composites

Standards, Metrology and Testing, Prague. CSN EN ISO 3093 (2011): Wheat, rye and their flours, durum wheat and durum wheat semolina – Determination of the falling number according to Hagberg-Perten. Czech Office for Standards, Metrology and Testing, Prague. CSN EN ISO 5529 (2011): Wheat – Determination of the sedimentation index – Zeleny test. Czech Office for Standards, Metrology and Testing, Prague. CSN EN ISO 5530-1 (2011): Wheat flour: Physical characteristics of doughs. Part 1: Determination of water absorption and rheological properties using a

Open access
Predicting Bread Quality (Bread Loaf Volume and Crumb Texture)

developmental rheology of wheat-flour dough using extension tests. J. Cereal Sci., 2000, 31, 1-13. ISO 2171: 1994. Cereal and cereal products. Determination of ash content. ISO 3093: 1982. Cereals - Determination of falling number. ISO 5529: 1992. Wheat - Determination of sedimentation index - Zeleny test. ISO 5530-4: 2002. Wheat flour ( Triticum aestivum L. ). Physical characteristics of doughs. Determination of rheological properties using an alveograph. Jakubczyk T

Open access
Milk acetone determination by the photometrical method after microdiffusion and via FT infra-red spectroscopy

References Barbano DM, Ma Y, Santos MV (2006): Influence of raw milk quality on fluid milk shelf life. J Dairy Sci 89: E15-E19. Carrier J, Stewart S, Godden S, Fetrow J, Rapnicki P (2004): Evaluation and use of three cowside tests for detection of subclinical ketosis in early postpartum cows. J Dairy Sci 87: 3725-3735. De Roos APW, van den Bijgaart HJCM, Horlyk L, de Jong G (2006): Screening for subclinical ketosis in dairy cattle by Fourier transform infrared spectrometry. In

Open access
Characteristics of Selected Quality Traits of Novel Cultivars of Pumpkin (Cucurbita Maxima Duch.)

, Wydawnictwo SGGW, Warszawa (in Polish). 7. Gajewski M., Radzanowska J., Danilcenko H., Jariene E., Cerniauskiene J., Quality of pumpkin cultivars in relation to sensory characteristics. Not. Bot. Hort. Agrobot. Cluj, 2008, 36, 73-79. 8. Guiné R.P.F., Pinho S., Barroca M.J., Study of the convective drying of pumpkin (Cucurbita maxima). Food Bioprod. Process., 2011, 89, 422-428. 9. Harvey W.J., Grant D.G., Lammerink J.P., Physical and sensory changes during the development and storage of buttercup squash. New Zealand J. Crop

Open access