Wyniki wyszukiwania - AGRO

1

Shrinkage characteristics of peat-moorsh soil

100%

Oleszczuk R.

Annals of Warsaw Agricultural University. Land Reclamation

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2001

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tom 31

13-21

2

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Accuracy of soil moisture measurement by TDR technique

88%

Skierucha W.

International Agrophysics

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2000

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tom 14

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nr 4

3

Spatial variability of soil moisture in grassland

88%

Janik G.

International Agrophysics

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2005

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tom 19

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nr 1

4

The effect of covering and mulching on the temperature and moisture of soil and broccoli yield

75%

Kosterna E.

Acta Agrophysica

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2014

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tom 21

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nr 2

Soils in Poland are characterised by relatively low available water reserves. Soil mulching is one of the methods which positively influence soil moisture and structure, reduce negative effects of erosion, and help to decrease fluctuations of soil temperature. The experiment was carried out in the years 2010-2012 at the Experimental Station of the Siedlce University of Natural Sciences and Humanities as a split-block design with three replicates. The study aimed to determine the effect of plant covering (with-out cover, under polypropylene fibre) and soil mulching with different kinds of straw (rye, corn, rape, buckwheat) on changes in soil temperature and moisture as well as on the yield of broccoli. Soil temperature at a depth of 10 cm in covered plots was higher than in plot without cover. Soil temperature in the plots without straw, irrespective of whether a covering was used, was higher than in plots with straw. The lowest fall in temperature compared to the control plot was observed in plots mulched with buckwheat straw. This phenomenon was a result of lower intensity of light reflection of this straw which absorbed more sunlight than straw of other species. All investigated kinds of straw caused an increase of moisture in the upper (0-20 cm) and lower (20-40 cm) soil layers after cover removal and before broccoli harvest, in the cultivation without cover and under polypropylene fibre. Application of covers and simultaneous soil mulching had more favourable influence on water content in the soil than only mulching. Significantly the highest total yield of broccoli in the cultivation under cover was achieved from plots mulched with buckwheat straw. In noncovered objects slightly higher yields compared to remaining kinds of straw, but significantly higher than in control plot, were noted for soil mulching with corn straw.

5

Identification of new Arabidopsis thaliana pri-miRNAs and mature miRNAs responsive to drought conditions

75%

Barciszewska-Pacak M., Skorupa K., Bielewicz D., Dolata J., Jarmolowski A., Szweykowska-Kulinska Z.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

6

Evaluation of water table dynamics for sustainable cultivation in wetlands

75%

Oke A., Are K., Oluwatosin G., Adeyolanu O., Dauda T., Adelana A.

International Agrophysics

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2011

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tom 25

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nr 2

7

Evaluation of canola chlorophyll index and leaf nitrogen under wide range of soil moisture

75%

Meskini-Vishkaee F., Mohammadi M. H., Neyshabouri M. R., Shekari F.

International Agrophysics

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2015

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tom 29

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nr 1

The paper presents a study on the effect of soil matric suction on the variation of leaf chlorophyll index and nitrogen concentration of canola. Results showed that chlorophyll index increases exponentially with soil matric suction, especially at the late season of canola growing time. At moderate matric suction (200 and 300 kPa soil suction heads), chlorophyll index remains nearly constant, but in drier soil (matric suction >300 kPa),chlorophyll index increases gradually with time. Despite the va-riation of the total leaf nitrogen with the soil matric suction, it is similar to the variation of the chlorophyll index, but the results showed that the chlorophyll index – nitrogen concentration curve has a de-marcated bi-modal shape. We suggest that 2.7% of nitrogen and 69.8 of the chlorophyll index value represent the upper limit of the chlorophyll meter reliability for estimation of canola nitrogen under a wide range of soil moisture levels. These results confirm that the chlorophyll meter can be used as an effective tool for rapid and non-destructive estimation of the relative chlorophyll and nitrogen content in canola leaves at a wide range of soil moisture content, except for nearly wilting coefficient or extremely high drought stress.

8

Comparison of surface soil moisture from SMOS satellite and ground measurements

75%

Usowicz B., Marczewski W., Usowicz J. B., Lukowski M. I., Lipiec J.

International Agrophysics

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2014

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tom 28

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nr 3

Soil moisture datasets at various scales are needed for sustainable land use and water management. The aim of this study was to compare soil moisture ocean salinity satellite and in situ soil moisture data for the Podlasie and Polesie regions in Eastern Poland. Both regions have similar climatic and topo- graphic conditions but are different in land use, vegetation, and soil cover. The test sites were located on agricultural fields on sandy soils and natural vegetation on marshy soils that prevail in the Podlasie and Polesie regions, respectively. The soil moisture ocean salinity soil moisture data were obtained from radiometric measurements (1.4 GHz) and the ground soil moisture from sensors at a depth of 5 cm during the years 2010-2011. In general, temporal patterns of soil moisture from both satellite and ground measurements followed the rainfall trend. The regression coeffi- cients, Bland-Altman analysis, concordance correlation coefficient, and total deviation index showed that the agreement between ground and soil moisture ocean salinity derived soil moisture data is better for the Podlasie than the Polesie region. The lower agre- ement in Polesie was attributed mostly to the presence of the widespread natural vegetation on the wetter marsh soil along with minor contribution of agriculturally used drier coarse-textured soils.

9

Soil moisture as a factor affecting the phytoclimate

75%

Matejka F.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1996

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tom 436

A mathematical model of interrelations between plant canopies and the atmospheric boundary layer was developed to quantify the influence of changes in soil moisture on the air temperature and humidity in the surface layer of the atmosphere. The verification of the model was carried out using experimental data concerning the maize canopy. It was shown that the soil moisture in the root zone is an important factor affecting not only the evapotranspiration but also the structure of the energy balance of plant canopies and consequently the air temperature and humidity in the surface layer of the atmosphere.

10

Spatial differentiation of soil moisture in strip-till one-pass technology

75%

Jaskulski D.

Acta Scientiarum Polonorum. Agricultura

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2019

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tom 18

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nr 3

11

Comparison of soil thermal properties in cultivated fields determined using soil water content measured by two methods

75%

Usowicz B., Kossowski J.

International Agrophysics

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1999

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tom 13

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nr 3

12

Infection of wheat with fungi from the genus Rhizoctonia depending on soil moisture

75%

Zoltanska E.

Phytopathologia Polonica

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2003

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tom 27

13

Trends in sensors for spatially variable control of field machinery

75%

Hellebrand H. J.

International Agrophysics

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1994

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tom 08

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nr 4

14

The impact of different soil moisture and soil compaction on the growth of triticale root system

75%

Grzesiak S., Grzesiak M. T., Filek W., Hura T., Stabryla J.

Acta Physiologiae Plantarum

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2002

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tom 24

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nr 3

15

Haman's inspiration concerning new mechanics of three-phase media

75%

Konstankiewicz K., Pukos A.

International Agrophysics

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1993

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tom 07

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nr 1

16

Soil moisture and bulk electrical conductivity variability measured by TDR

75%

Sobczuk H. A., Zhixiong C., Liuzong Z.

International Agrophysics

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1996

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tom 10

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nr 4

17

Shrinkage determination of soil aggregates

75%

Owczarzak W., Rzasa S., Kaczmarek Z.

International Agrophysics

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1993

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tom 07

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nr 4

18

Effect of peat decomposition on the capillary rise in peat-moorsh soils from the Biebrza River Valley

75%

Gnatowski T., Szatylowicz J., Brandyk T.

International Agrophysics

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2002

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tom 16

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nr 2

19

Seedling survival and dynamics of upper timberline in Central Apennines

63%

Catorci A., Scapin W., Tardella F. M., Vitanzi A.

Polish Journal of Ecology

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2012

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tom 60

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nr 1

Despite several studies on the timberline dynamics in Europe were carried out in the last decades, very few papers refer to mountain areas where the timberline is composed of broadleaved trees, and no research was conducted on the dynamics of Apennine beech timberline in relation to seedling survival. The research aim was to analyse the beech wood timberline dynamics in the central Apennines, with reference to seedling survival. Furthermore, factors affecting seedling survival were identified. To assess the forest ecotone dynamics, vegetation layer cover, rock fragment cover and information about forest management and krummholz occurrence were collected in sampling plots placed over 1,600 m a.s.l., on north-facing slopes. The beech seedlings occurring in Brachypodium genuense-dominated stands above the timberline were counted and monitored along two growing seasons. Soil temperature, soil moisture, and photosynthetically active radiation available for seedlings (PHAR) in grasslands above timberline were measured. The research outputs indicate that timberline is not a natural boundary and that there is no evidence of its extension upwards. The greatest number of beech seedlings was recorded in late spring. The one-year mortality rate ranged from 71 to 100%. None of the seedlings still alive in the early autumn of the first year were recorded in the following spring. The competitive exclusion by Brachypodium genuense individuals, which limit the incident PHAR, and the low soil moisture during summer, were identified as the main factors that account for the high mortality of seedlings and affect beech regeneration above timberline. The effect of competition is probably intensified by the lack of pioneer shrubs which could otherwise serve as nurse plants for beech seedlings and protect them from browsing by wild ungulates. Thus, both the current and the past land use may be considered as driving forces in timberline dynamics. Probably, also the trend of global warming, that in the Mediterranean and sub-Mediterranean climatic context would determine the increase of summer drought stress, could worsen the effect of competitive exclusion of beech seedlings, so that it can be hypothesized that the expansion upwards of the upper timberline in the Apennines could be totally blocked.

20

Matematyczny model procesu nawodnienia kroplowego

63%

Reinhard T., Reinhard A., Nyc K.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2008

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tom 528

W pracy przedstawiono model matematyczny nawodnień kroplowych oraz wyniki dotyczące rozkładu uwilgotnienia gleby, wykorzystując własny program komputerowy. Stwierdzono, że stosowanie większej ilości emiterów kroplujących dla jednej rośliny (np. 4) ogranicza znacznie grawitacyjny odpływ wody poza strefę korzeniową.

Ograniczanie wyników