Autor: . AR. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A comparison of oxygen diffusion rates in sand moistened with water or PEG 20000 solution
Autorzy:: Hiller, S.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/24419.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: sand
air
oxygen diffusion
polyethylene glycol
water
Źródło:: International Agrophysics; 1997, 11, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of soil type on the wilting of plants
Autorzy:: Czyz, E.A.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/24622.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:: It has been shown that the water remaining in soil when plants wilt due to soil limitations and the residual water content as observed when soils are de-watered in pressure cell apparatus are essentially the same. Both are produced by immiscible displacement of water by air, and this leads to the water remaining in soil not being in thermodynamic equilibrium. Water removal by immiscible displacement ceases when hydraulic cut-off is reached. The point of hydraulic cut-off may be calculated by fitting waterretention data to equations for both the non-equilibrium case and the equilibrium case, and then solving these simultaneously. This has been done forwater retention data for 52 soil horizons in Poland. These results are used to obtain a pedotransfer function for the permanent wilting point due to soil limitations and the results are presented for the different soil texture classes. The pore water suction when wilting occurs is estimated to be 1.0 MPa. The methods and findings in this paper are used to explain a range of published results on plant wilting.
Źródło:: International Agrophysics; 2013, 27, 4
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Soil physical properties under winter wheat grown with different tillage systems at selected locations
Autorzy:: Czyz, E.A.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/25282.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:: International Agrophysics; 2008, 22, 3; 191-200
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Mechanical dispersion of clay from soil into water: readily-dispersed and spontaneously-dispersed clay
Autorzy:: Czyz, E.A.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/24323.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: mechanical dispersion
clay
soil
water
readily-dispersed clay spontaneously-dispersed clay
Opis:: A method for the experimental determination of the amount of clay dispersed from soil into water is described. The method was evaluated using soil samples from agricultural fields in 18 locations in Poland. Soil particle size distributions, contents of organic matter and exchangeable cations were measured by standard methods. Sub-samples were placed in distilled water and were subjected to four different energy inputs obtained by different numbers of inversions (end-over-end movements). The amounts of clay that dispersed into suspension were measured by light scattering (turbidimetry). An empirical equation was developed that provided an approximate fit to the experimental data for turbidity as a function of number of inversions. It is suggested that extrapolation of the fitted equation to zero inversions enables the amount of spontaneously-dispersed clay to be estimated. This method introduces the possibility of replacing the existing subjective, qualitative method of determining spontaneously-dispersed clay with a quantitative, objective method. Even though the disper-sed clay is measured under saturated conditions, soil samples retaina ‘memory’ of the water contents at which they have been stored.
Źródło:: International Agrophysics; 2015, 29, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Soil physical properties as affected by traditional, reduced and no-tillage for winter wheat
Autorzy:: Czyz, E.A.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/24786.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:: International Agrophysics; 2009, 23, 4; 319-326
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Estimation of the density of the clay-organic complex in soil
Autorzy:: Czyz, E.A.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/24815.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: estimation
density
clay soil
organic matter
soil
clay content
organic matter content
Źródło:: International Agrophysics; 2016, 30, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Effects of soil management on the dispersibility of clay in a sandy soil
Autorzy:: Dexter, A.R.
Czyz, E.A.
Powiązania:: https://bibliotekanauki.pl/articles/24988.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: organic matter
clay
turbidity
fertilization
soil
stability
sandy soil
organic carbon content
dispersion
climate
Źródło:: International Agrophysics; 2000, 14, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Response of spring barley to changes of compaction and aeration of sandy soil under model conditions
Autorzy:: Czyz, E.A.
Tomaszewska, J.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/26019.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: aeration
oxygen diffusion rate
soil
sandy soil
compaction
yield
root growth
barley
soil compaction
soil bulk density
spring barley
model condition
Źródło:: International Agrophysics; 2001, 15, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Determination of suitable drying curve model for bread moisture loss during baking
Autorzy:: Soleimani Pour-Damanab, A.R.
Jafary, A.
Rafiee, S.
Powiązania:: https://bibliotekanauki.pl/articles/26209.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:: This study presents mathematical modelling of bread moisture loss or drying during baking in a conventional bread baking process. In order to estimate and select the appropriate moisture loss curve equation, 11 different models, semi-theoretical and empirical, were applied to the experimental data and compared according to their correlation coefficients, chi-squared test and root mean square error which were predicted by nonlinear regression analysis. Consequently, of all the drying models, a Page model was selected as the best one, according to the correlation coefficients, chi-squared test, and root mean square error values and its simplicity. Mean absolute estimation error of the proposed model by linear regression analysis for natural and forced convection modes was 2.43, 4.74%, respectively.
Źródło:: International Agrophysics; 2013, 27, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Effects of long-term use of different farming systems on some physical, chemical and microbiological parameters of soil quality
Autorzy:: Gajda, A.M.
Czyz, E.A.
Dexter, A.R.
Powiązania:: https://bibliotekanauki.pl/articles/24836.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: long-term use
farming system
physical parameter
chemical parameter
microbiological parameter
soil quality
organic matter
bulk density
Źródło:: International Agrophysics; 2016, 30, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Using satellite data for soil cation exchange capacity studies
Autorzy:: Ghaemi, M.
Astaraei, A.R.
Sanaeinejad, S.H.
Zare, H.
Powiązania:: https://bibliotekanauki.pl/articles/24146.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:: This study was planned to examine the use of LandSat ETM+ images to develop a model for monitoring spatial variability of soil cation exchange capacity in a semi-arid area of Neyshaboor. 300 field data were collected from specific GPS registered points, 277 of which were error free, to be analysed in the soil laboratory.The statistical analysis showed that therewas a small R-Squared value, 0.17, when we used the whole data set. Visual interpretation of the graphs showed a trend among some of the data in the data set. Forty points were filtered based on the trends, and the statistical analysis was repeated for those data. It was discovered that the 40 series were more or less in the same environmental conditions; most of them were located in disturbed soils or abandoned lands with sparse vegetation cover. The soil was classified into high and medium salinity, with variable carbon (1.0 to 1.6%), heavy textured and with high silt and clay. Finally it was concluded that two different models could be fitted in the data based on their spatial dependency. The current models are able to explain spatial variability in almost 45 to 65% of the cases.
Źródło:: International Agrophysics; 2013, 27, 4
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Effects of reduced and traditional tillage on soil properties and diversity of diatoms under winter wheat
Autorzy:: Stanek-Tarkowska, J.
Czyz, E.A.
Dexter, A.R.
Slawinski, C.
Powiązania:: https://bibliotekanauki.pl/articles/26476.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:: International Agrophysics; 2018, 32, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Efficient soil solarization for weed control in the rain-fed upland rice ecosystem
Autorzy:: Khan, A.R.
Srivastava, R.C.
Ghorai, A.K.
Singh, S.R.
Powiązania:: https://bibliotekanauki.pl/articles/25142.pdf
Data publikacji:: 2003
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: environment
soil
ground water
weed competition
crop yield
herbicide
solarization
ecosystem
rainfed upland
weed control
toxic residue
rice
Źródło:: International Agrophysics; 2003, 17, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Spatio-temporal soil quality assessment under crop rotation irrigated with treated urban wastewater using fuzzy modelling
Autorzy:: Ghaemi, M.
Astaraei, A.R.
Mahalati, M.N.
Emami, H.
Sanaeinejad, H.H.
Powiązania:: https://bibliotekanauki.pl/articles/24657.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: spatio-temporal property
soil quality
assessment
crop rotation
irrigation
urban waste water
fuzzy model
fuzzy function
treated waste water
Opis:: Quantifying soil quality is important for asses- sing soil management practices effects on spatial and temporal variability of soil quality at the field scale. We studied the pos- sibility of defining a simple and practical fuzzy soil quality index based on biological, chemical and physical indicators for assessing quality variations of soil irrigated with well water and treated urban wastewater during two experimental years. In this study 6 proper- ties considered as minimum data set were selected out of 18 soil properties as total data set using the principal component analysis. Treated urban wastewater use had greater impact on biological and chemical quality. The results showed that the studied minimum data set could be a suitable representative of total data set. Significant correlation between the fuzzy soil quality index and crop yield (R 2 = 0.72) indicated the index had high biological significance for studied area. Fuzzy soil quality index approach (R 2 = 0.99) could be effectively utilized as a tool leading to better understanding soil quality changes. This is a first trial of creation of a universal index of soil quality undertaken.
Źródło:: International Agrophysics; 2014, 28, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki