Naslov
The nutrient content in manure as a variable of profitability of organic fertilization

Autori
Lončarić, Zdenko ; Ravnjak, Boris ; Nikolin, Iva ; Perić, Katarina ; Zebec, Vladimir ; Jović, Jurica, Štolfa Čamagajevac, Ivna ; Vuković, Ana ; Lončarić, Ružica

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Economic and Social Development, 88th International Scientific Conference on Economic and Social Development – "Roadmap to NetZero Economies and Businesses", Book of Proceedings / Janjušević, Jelena ; Hopkinson, Paul ; Pandža Bajs, Irena - Dubai : Varazdin Development and Entrepreneurship Agency and Heriot-Watt University, 2022, 516-525

Skup
88th International Scientific Conference on Economic and Social Development: Roadmap to NetZero Economies and Businesses

Mjesto i datum
Dubai, Ujedinjeni Arapski Emirati, 19.10.2022. - 20.10.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
costs ; effectiveness ; manure ; mineral fertilization ; organo-mineral fertilization

Sažetak
Soil fertility and crop requirements significantly affect fertilization in plant cultivation. Mineral fertilizers have been the basic form of fertilization for decades, but the importance of organic fertilizers is increasing due to soil degradation, environmental protection and increasing prices of mineral fertilizers. Since manures are cheaper than mineral fertilizer, it should be expected that fertilization with manure is universally cheaper. However, due to the costs of manure transport and application, as well as variability of manure quality, fertilization with manure does not have to be always profitable. The aim of paper was to analyze the impact of soil fertility and main nutrients, i.e. nitrogen (N), phosphorus (P) and potassium (K) content in manure on profitability of organo-mineral comparing to mineral fertilization. Therefore, the costs of mineral and organo-mineral fertilization (combined application of manure and mineral fertilizers) were compared under conditions of different manure prices (5-20 EUR/t) and different contents of main nutrients in manure. Fertilization and nutrient requirements are highest on poor soils, and consequently fertilization costs are higher. For poor soils and lowest manure price (5 EUR/t), there should be at least 0.19% N (assuming also 0.47% as sum of N, P and K) to be less expensive than mineral fertilization. Considering highest manure price (20 EUR/t), there should be 0.57% N (and 1.43% as sum of NPK). The threshold for medium fertile soils was higher, 0.21% N and 0, 52% NPK up to 0.82% N and 2.05% NPK. The highest threshold for nutrient content in manure for successfully decreasing costs of fertilization was on most fertile soils, there should be at least 0.68% up to 2.41% N, for lowest (5 EUR/t) and highest (20 EUR/t) manure price, respectively. The results show very significant impact of manure price and nutrient content in manure, but also there is significant impact of soil fertility and crop demands on profitability of organo- mineral fertilization with manure.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA