Temat: water-saving irrigation

Skocz do pozycji: 1.

Tytuł:: Changes in Water Quality for Sprinkler Irrigation in Selected Lakes of the Poznan Lake District
Autorzy:: Stachowski, Piotr
Rolbiecki, Stanisław
Jagosz, Barbara
Krakowiak-Bal, Anna
Rolbiecki, Roman
Figas, Anna
Gumus, Mehmet
Atilgan, Atilgan
Tematy:: biological oxygen demand
faecal coli
Secchi disc
soluble oxygen
water-saving irrigation
water purity; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59113444.pdf Link otwiera się w nowym oknie
Opis:: The rapidly changing quality of irrigation water requires urgent attention to understand and predict the long-term effects on soils and food crops, especially in a situation of global freshwater scarcity. The aim of the research was to assess changes in water quality in two selected lakes located in Poland in 2009–2016. The study was carried out in terms of the possibility of using selected reservoirs as sources of water for sprinkler irrigation of agricultural crops. The presented analysis was compared with a similar one carried out in 1999–2006 and 2004–2009 to determine the historic and present water quality state. Results indicate, that the source of pollution of the lakes is most often outflows from sewerage systems, the precipitation and surface runoff from the catchment areas of these lakes, which are mainly used as agricultural land. In Lake Niepruszewskie, the oxygen conditions, water transparency, phosphorus content, sestone dry matter and coliform titre increased, while the biological oxygen demand (BOD5), nitrogen, and chlorophyll content decreased. According to present research, in the Strykowskie Lake, the phosphorus content and BOD5 decreased, while the sanitary condition, nitrogen content and oxygen conditions deteriorated. The reduction of mineral fertilization in recent years has reduced the degradation of the lakes and allowed the water quality to remain in Class III of purity. Despite the visible improvement in the general condition of both studied lakes, constant monitoring of their quality is necessary, which is obligatory for the water from these reservoirs to be used for sprinkler irrigation of crops.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Potential of Irrigation and Biochar on Reduction Methane Emission and Leaching Nitrate into Groundwater
Autorzy:: Dinh, Phuong T.L.
Nguyen, Viet P.
Nguyen, Hoa T.
Nguyen, Dinh T.N.
Pham, Anh N.
Tematy:: nitrogen loss
mitigation nitrogen loss
mitigation greenhouse gas
paddy field
saving water irrigation
groundwater; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114419.pdf Link otwiera się w nowym oknie
Opis:: Agricultural by-products such as rice husks are very popular in Vietnam, which are often burned in the fields, causing an increase in dust smoke and greenhouse gas (GHG) emissions. To study the effects of different irrigation methods, quality of irrigation water and additive biochar from rice husk (BFRH) on leaching nitrate from paddy fields into shallow groundwater and methane (CH4) emissions, we investigated a two-season experiment (2021–2023) under two irrigation methods: water-saving irrigation and flood irrigation with 120 kg N/ha. The results illustrated that seasonal CH4 emissions and leaching nitrate were affected by irrigation practices and significantly correlated with the quality of irrigation and the amount of BFRH added. To compare of control, the flood irrigation water increased the leaching of GHG and NO3- into shallow groundwater from 27.3–32.4% and 16.4–31.25%, respectively. Meanwhile, the saving water irrigation reduced CH4 and leaching of NO3- into shallow groundwater from 13.3–17.8% and 15.63–18.9%, respectively. Applying biochar with controlling fertilizer reduces CH4 and NO3- content in surface field water, contributing to the decreased leaching of NO3- into groundwater. Reducing 20% fertilizer rate of N (96 kg N/ha) with application biochar of 5% without a change in yield reduces NO3- content into shallow groundwater from 13.7–14.3%. We conclude that water-saving irrigation combined with biochar from rice husk incorporation simultaneously mitigates CH4 emissions, improves yield, and reduces leaching nitrate into groundwater, making it a suitable environment-friendly nitrogen management practice for sustainable farming in northern Vietnam.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Influence of Drip Irrigation on Water Efficiency in Pear Cultivation
Autorzy:: Lepaja, Lavdim
Lepaja, Kujtim
Kullaj, Endrit
Balaj, Nexhat
Tematy:: saving water
drip irrigation
Pyrus communis; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114373.pdf Link otwiera się w nowym oknie
Opis:: This field experiment aimed to evaluate the impact of two distinct levels of irrigation, specifically drip irrigation, on a pear orchard to conserve water without compromising production. Kosovo boasts conducive conditions for tree cultivation; however, water scarcity, particularly during the vegetation period, necessitates supplementary irrigation. The study was carried out in the Dukagjini plain on a 10-hectare pear orchard, using a nested experimental design.. Per two levels of irrigation, for 13 rows with tress were used with 100% of evapotranspiration as control and 13 rows with 50% of deficit irrigation. One row were length 90 m and width 40 cm, in total area where applied irrigation were 936 m2. Using ANOVA, we detected significant fluctuations in total yield, the number of fruits, and fruit weight. With this technology in 100% irrigation have been achieved a total 7497 kg/900 trees or an average of 8.33 kg/tree while in 50% irrigation have been achieved 4590 kg/900 trees or 5.10 kg/tree. In classification of fruits 85.41% (100% irrigation) were extra class while 92.30% in 50% of irrigation. Our results confirmed that drip irrigation combined with a moderate water stress increase all productive parameters especiallity in total yield, too with significant water saving.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: CropSyst model for wheat under deficit irrigation using sprinkler and drip irrigation in sandy soil
Model CropSyst do nawodnień pszenicy metodą deszczowania i metodą kroplową na glebach piaszczystych
Autorzy:: Noreldin, T.
Ouda, S.
Mounzer, O.
Abdelhamid, M. T.
Tematy:: crop modeling
CropSyst model
deficit irrigation
drip irrigation
sprinkler irrigation
Triticum aestivum
water saving
model CropSyst
modelowanie plonów
nawodnienia deszczowniane
nawodnienia kroplowe
oszczędność wody
potrzeby nawodnień; Pokaż więcej
Wydawca:: Instytut Technologiczno-Przyrodniczy
Powiązania:: https://bibliotekanauki.pl/articles/293068.pdf Link otwiera się w nowym oknie
Opis:: CropSyst (Cropping Systems Simulation) is used as an analytic tool for studying irrigation water management to increase wheat productivity. Therefore, two field experiments were conducted to 1) calibrate CropSyst model for wheat grown under sprinkler and drip irrigation systems, 2) to use the simulation results to analyse the relationship between applied irrigation amount and the resulted yield and 3) to simulate the effect of saving irrigation water on wheat yield. Drip irrigation system in three treatments (100%, 75% and 50% of crop evapotranspiration – ETc) and under sprinkler irrigation system in five treatments (100%, 80%, 60%, 40%, and 20% of ETc) were imposed on these experiments. Results using CropSyst calibration revealed that results of using CropSyst calibration revealed that the model was able to predict wheat grain and biological yield, with high degree of accuracy. Using 100% ETc under drip system resulted in very low water stress index (WSI = 0.008), whereas using 100% ETc sprinkler system resulted in WSI = 0.1, which proved that application of 100% ETc enough to ensure high yield. The rest of deficit irrigation treatments resulted in high yield losses. Simulation of application of 90% ETc not only reduced yield losses to either irrigation system, but also increased land and water productivity. Thus, it can be recommended to apply irrigation water to wheat equal to 90% ETc to save on the applied water and increase water productivity.
CrosSyst (ang. Cropping Systems Simulation) wykorzystano jako narzędzie analityczne do zarządzania wodą do nawodnień w celu zwiększenia produktywności pszenicy. Przeprowadzono dwa eksperymenty terenowe w celu: 1) kalibracji modelu CropSyst w odniesieniu do pszenicy uprawianej w warunkach nawodnień deszczownianych i kroplowych, 2) zastosowania wyników symulacji do analizy zależności między wielkością nawodnień a plonem i 3) symulacji wpływu oszczędności wody użytej do nawodnień na plon pszenicy. W eksperymentach zastosowano trzy warianty nawodnień kroplowych (100%, 75% i 50% ewapotranspiracji – ETc) i pięć wariantów nawadniania deszczownianego (100%, 80%, 60%, 40% i 20% ETc). Wyniki kalibracji wykazały, że wartość RMSE wynosiła 0,03 i 0,14 t·ha^–1 odpowiednio dla ziarna i biomasy. Model umożliwiał symulację dobowego stresu wodnego w ciągu całego sezonu wegetacyjnego. W wariancie 90% ETc nie tylko stwierdzono zmniejszenie strat plonu w każdym z systemów nawodnień, ale także zwiększenie produktywności wody. Dlatego można zalecić stosowanie dawki 90% ETc w celu oszczędności wody i zwiększenia jej produktywności.
Dostawca treści:: Biblioteka Nauki

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