Wyniki wyszukiwania - AGRO

1

Estimation of evapotranspiration in Libya under the impact of plausible global climate change

100%

Ali A. A.

Geographia Polonica

|

1997

|

tom 70

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Estimating reference evapotranspiration and irrigation water requirements in the Gallikos River basin, Greece

100%

Paltineanu C., Panoras A. G., Mavroudis I. G., Louisakis A.

International Agrophysics

|

1999

|

tom 13

|

nr 1

3

Modified method of aerodynamic resistance calculation and its application to potential evapotranspiration estimation

88%

Rodny M., Nolz R., Novak V., Hlavacikova H., Loiskandl W., Himmelbauer M.

International Agrophysics

|

2016

|

tom 30

|

nr 2

4

Efficiency of utilization of water for evapotranspiration of mountain grasslands

88%

Misztal A., Zarzycki J., Bedla D.

Infrastruktura i Ekologia Terenów Wiejskich

|

2015

|

nr IV/3

5

Beziehungen zwischen der Strahlungsenergie und der Verdunstung landwirtschaftlicher Pflanzenbestande

88%

Gunther R., Roth D.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja

|

1990

|

nr 35

6

Reliability estimates of evapotranspiration under inaccurate data conditions in Nigeria

88%

Akinbile C. O., Sangodoyin A. Y.

Annual Review of Agricultural Engineering

|

2009

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tom 07

|

nr 1

7

Estimation of evapotranspiration and crop water-index using active surface temperature

88%

Szabo T., Toth R.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja

|

1990

|

nr 35

8

Comparison between experimental and estimated crop evapotranspiration in Romania

88%

Paltineanu C.

International Agrophysics

|

2005

|

tom 19

|

nr 2

9

Comparison of two methods of evapotranspiration calculation

75%

Hurtalova T., Novak V., Matejka F., Sutor J.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1996

|

tom 436

The values of the evapotranspiration calculated by the energy balance method were compared with corresponding results obtained by means of the EVASU model. Experimental data were obtained during NOPEX - First Concentrated Field Effort (CFE1). The CFE1 was realized in May-June 1994 in Lövsta, Sweden. The investigated vegetation were grass, spring barley, rye and winter wheat. Taking into account the accuracy of the both compared methods used for calculation of the evapotranspiration, the obtained results can be considered as very close in the interval of evapotranspiration rates between values 0.1 mm h⁻¹ and 0.5 mm h⁻¹.

10

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

|

2011

|

tom 25

|

nr 2

11

Enquiry into area related evaporation values, in consideration of local conditions, on the basis of an agrar-meteorological model for calculation of evapotranspiration rates in cultivated plants

75%

Muller J., Muller G., Thoma M.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja

|

1990

|

nr 35

12

A measurement of the evapotranspiration under alfalfa by the gradients of the energy and quantity of soil water

75%

Doneva E., Shopski N.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja

|

1990

|

nr 35

13

Evaporation from water surface as climatic indicator to estimate mountain grassland evapotranspiration

75%

Misztal A., Zarzycki J.

Acta Agrophysica

|

2016

|

tom 23

|

nr 2

This paper presents a study on the evaporation of water from the surface in the area of the Lesser Pieniny Mts., determined on the basis of measurements at the climatic-lysimetric station in Jaworki. The evaporation of water from the surface is diversified in specific 10-day periods and months of the vegetation season, and the total for April-September was 334.1 mm. The quantity of evaporating water was lower than the measured reference evapotranspiration, assumed to be the evaporation of a well-watered, compact grassy sward, and lower than the reference evapotranspiration calculated in accordance with the Penman formula in French modification and the Penman-Monteith formula. In the area of the Lesser Pieniny Mts., the evaporation of water can be expressed as a function of the deficit of air humidity and – to a lesser extent – of air temperature. The seasonal plant coefficients kc determined on the basis of evaporation from open water surface Ew can be used successfully to determine the evapotranspiration of mountain grassland.

14

Does plant cover structure in rural areas modify climate change effects?

75%

Kedziora A., Ryszkowski L.

Geographia Polonica

|

1999

|

tom 72

|

nr 2

15

Influence of sucking pressure of soil water on evapotranspiration and meadow yielding

75%

Szajda J., Olszta W.

Acta Agrophysica

|

2000

|

tom 35

In the present study soil-water coefficients ksi were determined and evaluation of the influence of soil sucking pressure on the actual yield was carried out. Relations between these coefficients and soil sucking pressure in the root zone are used for the calculation of actual evapotranspiration or actual yield neglecting evaluation of the influence of evapotranspiration on yield.

16

Exchange of water in the soil-plant-atmosphere system

75%

Kutilek M., Novak V.

International Agrophysics

|

1998

|

tom 12

|

nr 1

17

Relationships between the De Martonne aridity index and water requirements of some representative crops: A case study from Romania

75%

Paltineanu C., Tanasescu N., Chitu E., Mihailescu I. F.

International Agrophysics

|

2007

|

tom 21

|

nr 1

18

Variation of climatic water balance and heat balance for various ecosystems in Wroclaw in the years 1964-2000

63%

Musial E., Bubnowska J., Gasiorek E.

Annals of Warsaw Agricultural University - SGGW. Land Reclamation

|

2006

|

nr 37

101-110

19

Impact of extreme climate years on relative "yield - evapotranspiration" relationships

63%

Mladenova B., Varlev I.

Journal of Water and Land Development

|

2007

|

nr 11

20

Impact of different irrigation water levels on yield and some quality parameters of lettuce (Lactuca sativa L. var. Longifolia cv.) under unheated greenhouse condition

63%

Senyigit U., Kaplan D.

Infrastruktura i Ekologia Terenów Wiejskich

|

2013

|

nr 2/IV

The experiment was carried out to determine the effects of different irrigation water levels on yield and some quality parameters of lettuce (Lactuca sativa L. Var. Longifolia cv.) under greenhouse conditions. Irrigation water was applied through drip irrigation method with 7 days interval during the total growing season. Irrigation treatments consisted of six different water levels (I1: non-irrigation, I2: 25 %, I3: 50 %, I4: 75 %, I5: 100 % and I6: 125 % of cumulative evaporation measured from Class A pan). The amount of irrigation water ranged between 0 and 106.3 mm among the treatments. Evapotranspiration (ET) values varied from 69.1 to 158.5 mm for the treatments. The highest yield was obtained from the I5 followed by I4. A significant polynomial relation (R2=0.77) was obtained between the yield and irrigation water, and linear relation (R2=0.99) was obtained between the yield and ET. This indicated that when irrigation water increased, yield also increased to a certain point. However, when the amount of irrigation water exceeded the plant water requirement, lettuce yield decreased. Yield response factor (Ky) was determined as 1.97. Since Ky ˃ 1, lettuce was very sensitive to water deficiency. In addition, the highest water use efficiency (WUE) and irrigation water use efficiency (IWUE) values were calculated in the I5 with 0.60 t ha.mm-1 and 0.96 t ha.mm-1 respectively. The best plant quality parameters which were plant weight (239.11 g), plant height (26.30 cm), plant diameter (44.82 cm), root weight (17.31 g), root length (9.02 cm), root diameter (10.04 cm) and leaf number (49) were also obtained in I5. As a result, it was suggested that I5 can be the most appropriate irrigation water level for lettuce with higher WUE, IWUE, yield and quality under greenhouse conditions.

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