- Tytuł:
- Productivity, nitrogen use efficiency and water use efficiency of maize for grain in long term field experiments
- Autorzy:
- Rutkowska, Agnieszka
- Powiązania:
- https://bibliotekanauki.pl/articles/2148504.pdf
- Data publikacji:
- 2019-06-30
- Wydawca:
- Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
- Tematy:
-
Zea mays
nitrogen rates
Nitrogen Use Efficiency (NUE)
Water Use Efficiency (WUE)
nitrogen surplus - Opis:
- 11Abstract. Maize, one of the most important cereals species grown in Poland, use large quantities of nitrogen, but water defi-cit through the vegetation period might lead to yield reduction and diminish nitrogen uptake. The aim of the study was to char-acterize the productivity of the crop, depending on its nitrogen and water use efficiency. In two locations, in Western and Eastern Poland, eleven-year field experiments with maize grown for grain were conducted. Maize was fertilized with increasing rates of ni-trogen: 50, 100, 150, 200 i 250 kg N ha-1. It was found, that grain yields of maize raised statistically significant up to 8.03 tha-1 under 150 kg Nha-1. Such a dose guaranteed: nitrogen uptake 182 kg Nha-1, nitrogen use efficiency 121%, nitrogen surplus -32 kg Nha-1, water use efficiency 14.5 kgha-1 mm-1, and nitro-gen utilization efficiency 43 kgkg-1. Increasing nitrogen doses over the years was not justified because maize productivity was limited by water availability under higher nitrogen rates.
- Źródło:
-
Polish Journal of Agronomy; 2019, 37; 11-15
2081-2787 - Pojawia się w:
- Polish Journal of Agronomy
- Dostawca treści:
- Biblioteka Nauki
Artykuł