Faculty of Agricultural Sciences and Food

Permanent URI for this communityhttps://repository.ukim.mk/handle/20.500.12188/2

Browse

Search Results

Now showing 1 - 10 of 505

Some of the metrics are blocked by your
consent settings
From clay to crops: improving water productivity in rosemary and lavender under sandy soil conditions in South Africa
(Frontiers Media SA, 2026-07-29)
;
Stander, Hendrik Barend
;
;
Wolfaardt, Gideon M.
;
Goli, Imaneh
Background Increasing irrigation water productivity is a key strategy for achieving sustainable agricultural production. This study evaluated the performance of self-regulating low-energy clay-based irrigation (SLECI) as a sustainable alternative to surface and subsurface drip irrigation under water-scarce sandy field conditions, with a particular focus on quantifying the trade-off between irrigation water productivity and fresh biomass yield. SLECI system is a subsurface irrigation technology that uses microporous clay emitters buried within the crop root zone. Water is released passively in response to soil moisture deficits, as water flows through the clay pores only when soil suction exceeds the retention force of the emitter. This self-regulating mechanism delivers water directly to plant roots without the need for pumps, sensors, or external control systems. Methods The experiment was conducted on newly established, 1-year plantings of rosemary ( Salvia rosmarinus , Tuscan Blue variety) and lavender ( Lavandula stoechas , Hollandia variety) grown under open-field conditions at the Welgevallen Experimental Farm, Stellenbosch, South Africa (33°56′33″ S, 18°51′52″ E), from November 2023 to February 2024, during the hot-dry summer season. Results The highest fresh marketable yield of rosemary was obtained under subsurface drip irrigation (906 kg/ha), while lavender achieved its highest yield under conventional surface drip irrigation (3,625 kg/ha). Although yields under SLECI were lower, this system used substantially less irrigation water (533.2 m 3 /ha) over the 3-month period, compared with surface drip (6,800 m 3 /ha) and subsurface drip irrigation (3,060 m 3 /ha). Irrigation water productivity (IWP) demonstrated the water-saving efficiency of SLECI, producing 0.529 kg of fresh marketable rosemary per m 3 of applied water, nearly 4.5 times higher than surface drip irrigation. Similarly, SLECI achieved an IWP of 1.467 kg/m 3 for lavender, representing a more than 2.7-fold increase compared to surface drip irrigation (0.115 kg/m 3 ). Irrigation technique significantly affected fresh marketable yield. Subsurface drip irrigation and SLECI increased rosemary plant diameter relative to surface drip, whereas subsurface and surface drip irrigation promoted larger lavender plant diameters. Conclusion This study contributes to understanding how clay-based irrigation systems perform under severe sandy soil conditions and provides practical insights into the trade-off between water saving and crop productivity in semi-arid environments.
Some of the metrics are blocked by your
consent settings
Nitrogen and magnesium content of apples available on the Zagreb market.
(2026-10-01)
Some of the metrics are blocked by your
consent settings
ATR-FTIR spectroscopy as a rapid complementary tool for qualitative assessment of mineral fertilizers
(2026-09-15)
;
Mitkova, Tatjana
;
;
Lončarić, Zdenko
;
Petek, Marko
Complementary analytical methods are crucial for the qualitative assessment of mineral fertilizers commonly applied in agriculture. In this study, both reference substances and fertilizer samples were analyzed using the ATR-FTIR technique. Pure compounds such as ammonium sulfate, potassium sulfate, and calcium sulfate heptahydrate were first recorded as standards to establish a reference spectral library. Fertilizer samples were ground to a fine powder (<1 mm) and placed on the diamond crystal surface for spectral measurement. The obtained absorption spectra enabled identification of the main components present in the fertilizers and provided a clear comparison with the standard spectra. Although the method allows only qualitative determination of compounds, comparison with the recorded standards provides valuable insights into the composition of the investigated samples. This approach is particularly useful when rapid screening of fertilizers is required without the need for time-consuming wet chemistry analyses. The results demonstrate that ATR-FTIR spectroscopy can serve as a reliable complementary method for routine fertilizer testing, ensuring both quality control and detection of possible adulteration or impurities. Furthermore, when combined with conventional laboratory techniques such as titrimetry, AAS, or ICP-OES, the method contributes to a more comprehensive and accurate characterization of fertilizer composition, ultimately supporting sustainable agricultural practices.
Some of the metrics are blocked by your
consent settings
Improving Medical Cases Retrieval Using an Online Fact Database
(Springer International Publishing, 2017-10-12)
;
;
;
This paper presents an approach for retrieval of medical cases using a novel query expansion method. The approach relies purely on the text data in the medical cases. The cases are indexed with Terrier IR search engine based on their text content including the caption of the figure contained within them. Furthermore, in the retrieval phase there is an input consisted of a long text query in a narrative form. The input query is expanded by using on-line fact databases, such as Freebase, with the aim that this will add more terms relevant to the concepts mentioned in the text. The goal is to provide a way of query expansion, so that the query is more defined, which should provide more narrowed and precise results in the retrieval. The retrieval is done with the BM25 weighting model. Our approach shows that expanding the input text query in this fashion can provide a boost in the retrieval performance.
Some of the metrics are blocked by your
consent settings
BRIDGING THE GAP BETWEEN AGRICULTURAL EDUCATION AND LABOR MARKET NEEDS: EMPLOYABILITY AND PERCEPTIONS OF AGRICULTURAL ENGINEERING GRADUATES IN NORTH MACEDONIA
(Faculty of Agricultural Sciences and Food, 2024-12-15)
Tuna, Emelj
;
Gjoshevski, Dragan
;
Azderski, Jovan
;
Dimitrievski, Dragi
;
Martinovska Stojcheska Aleksandra
Some of the metrics are blocked by your
consent settings
ECONOMIC ANALYSIS OF GRAPE PRODUCTION IN MACEDONIA: THE CASE OF THE SMEDEREVKA VARIETY
(Faculty of Agricultural Sciences and Food, 2025-06-15)
Elenov, Riste
;
Sredojevic, Zorica
In the Republic of North Macedonia are 1,265 thousand hectares of agricultural land, of which about 520 thousand hectares are arable land. Of the total arable land, arable land and gardens account for 80%, meadows for 12%, vineyards for 5% and orchards for 3%. In the area under vineyards, wine varieties account for 70%, of which white varieties account for 40% and red varieties for 60% (State Statistical Office, 2025). The most common white varieties are: Smederevka, Chardonnay, Riesling and Sauvignon, and the most common red varieties are: Vranec, Kratošija, Cabernet Sauvignon and Merlot. The subject of research in this paper is the production of grapes, the Smederevka variety. The aim of the research is to analyze the results and economic justification of the production of the mentioned grape variety. Data were collected through a survey of 30 grape producers from the Vardar region. The data collected through the survey were processed using the Excel software package. Descriptive statistics indicators were also used. The results of the analysis indicate that the average yield of the Smederevka variety is 18,833 kg/ha, and the average total income is 293,937 denars. In the total income, income from the sale of grapes accounts for 73%, subsidies per area account for 14%, and subsidies per delivered quantities of grapes account for 13%. The average yield rate is 45%, and the average yield threshold is 17,055 kg/ha. The cost price of grapes is the lowest among producers with larger plantings, and they also achieve better operational results. Smaller producers should focus on association, consolidation, and modernization of their capacities, along with continuous education.
Some of the metrics are blocked by your
consent settings
Integrated extraction optimization and nanoencapsulation of Ziziphus jujuba leaf: Comparative functional evaluation with fruit
(Elsevier BV, 2026-09)
Stojanova, Monika
;
Djukic, Dragutin A.
;
Stojanova, Marina S.T.
Some of the metrics are blocked by your
consent settings
Assessing food waste management in the restaurant sector in the Republic of North Macedonia
(Agricultural Academy, 2026-06-26)
Santa, Dushica; Bogevska, Zvezda; Velinova, Ivana; Srbinovska, Sonja
Some of the metrics are blocked by your
consent settings
Investment in biological systems sustainability of water and locations in rural areas of the Republic of Serbia
(University of Agronomic Sciences and Veterinary Medicine of Bucharest, 2025)
Sredojevic, Zorica
;
Elenov, Riste
;
Gajić, Boško
Some of the metrics are blocked by your
consent settings
Agricultural Labor Dynamics In Pelagonia, North Macedonia: A Case Study Through The Lens Of Agricultural Household And Labor Transition Models
(University of Agronomic Sciences and Veterinary Medicine of Bucharest, 2025)
Simonovska, Ana
;
;
Elenov, Riste
;
Janeska Stamenkovska Ivana

Faculty of Agricultural Sciences and Food

Browse

Filters

Settings

Sort By

Results per page

Search Results