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Wyszukujesz frazę "crop simulation model" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Influence of Irrigation Levels on Morphological Attributes and Yield of Tomato under Current and Climate Change Conditions
Autorzy:
Abdoun, Roaya M.
Darwish, Omaima S.
Hashem, Fadl A.
Shehata, Said A.
Tematy:
AquaCrop model
climate change scenario
crop simulation model
irrigation requirements
Solanum Lycopersicon
tomato
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Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/59113585.pdf  Link otwiera się w nowym oknie
Opis:
Water shortage consider on of the main threats facing the agriculture, mainly in the Mediterranean area. So that there is a great need to apply new methods to water resource management. The crop models are used to achieve this objective. Tomato is a significant vegetable crop globally and represent an important part of horticultural production with 180 million tons produced on over five million hectares even though few studies have validated the AquaCrop model, especially in Egypt. This study was conducted in a protected cultivation experimental farm, Agricultural Research Center (ARC), Dokki, Giza, Egypt during the winter seasons of 2019/2020 and 2020/2021. Different irrigation levels (IL): 55%, 70%, 85%, 100%, and 115% of evapotranspiration (Eto) were applied on tomato. Plant growth parameters, relative chlorophyll content (SPAD), yield, fruit quality and plant nutrients (NPK) were recorded at both seasons. Also, the aforementioned irrigation levels were used to validate the AquaCrop model on different climate change scenarios on tomato productivity in 2050 and 2100. The findings revealed that the highest plant growth parameters were obtained in 85% and 100% Eto as compared to all treatments at both seasons. In contrast, the 55% of Eto obtained the lowest values of all plant growth parameters. The number of fruits/plant, early yield, and total yield of 100% Eto were ranked secondly. Fruits quality was significantly affected by the tested ILs. The highest values of TSS, firmness and vit C of tomato fruits were obtained by 55% followed by 70% Eto. The lowest proline content was recorded at 115% of Eto in both seasons. The content of proline in plants of 70% Eto ranked secondly after 55% of Eto in both seasons. The results of AquaCrop model (Version 7.0) revealed that the crop productivity decreased by 4% and 33% of RCP4.5 and RCP8.5 scenarios, respectively, of the years 2050, 14% and 44% for the same scenarios, respectively, of the year 2100.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crop Acreage and Crop Production Estimates for Small Domains - Revisited
Autorzy:
Tikkiwal, G. C.
Khandelwal, Alka
Tematy:
Timely Reporting Scheme (TRS) General Crop Estimation Surveys (GCES)
Simulation-cum- Regression (SICURE) model
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Wydawca:
Główny Urząd Statystyczny
Powiązania:
https://bibliotekanauki.pl/articles/465964.pdf  Link otwiera się w nowym oknie
Opis:
For any country advance and final estimates of yield of principle crops, at National and State levels, are of great importance for its macro level planning. But, for decentralized planning and for other purposes like crop insurance, loan to farmers, etc., the reliable estimates of crop production for small domains are also in great demand. This paper, therefore, discusses and review critically the methodology used to provide crop acreage and crop production estimates for small domains, based on indirect methods of estimation, including the SICURE model approach. The indirect methods of estimation so developed use data obtained either through traditional surveys, like General Crop Estimation Surveys (GCES) data, or a combination of the surveys and satellite data.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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