Naslov
Spatio-temporal change of soil pH, P2O5 and K2O content under variable mineral nitrogen fertilization

Autori
Šestak, Ivana ; Mesić, Milan ; Zgorelec, Željka ; Perčin, Aleksandra

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts - 58th Croatian & 18th International Symposium on Agriculture / Carović-Stanko, K. ; Širić, I. - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2023, 8-8

Skup
58th Croatian & 18th International Symposium on Agriculture

Mjesto i datum
Dubrovnik, Hrvatska, 11.02.2023. - 17.02.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
arable farming ; mineral fertilization ; precision soil sampling ; soil quality ; Stagnosols

Sažetak
Soil sampling is the first step in generating field-specific information on which to base agricultural input decisions. The objective of the study was to evaluate spatial and temporal variability of soil pH, plant available phosphorus (P2O5) and potassium (K2O) content under variable mineral nitrogen (N) fertilization. The research was conducted on the experimental field within hydro-ameliorated cropland in the Western Pannonia subregion of Croatia (45°33’N, 16°31’E). Grid soil sampling (15x15 m ; n=200) was carried out with semi-automatic circular tractor soil probe at 30 cm depth after winter wheat harvest in 2010 and 2016 covering ten fertilization treatments (0-300 kg N ha-1). A sequence of spatial changes in soil properties was influenced by differences in N rates, liming, field drainage and specific terrain features, although similar spatial response was apparent for both investigated years. A two-way ANOVA revealed that only soil pH values significantly differed among two years (p<0.05), while significant effect of treatment was recorded for soil P2O5 and K2O content. Soil pH and P2O5 values were higher in soils sampled in 2016 in addition to samples collected in 2010 due to the liming applied in mid-term (max. of 21% and 24%, respectively). In 2016, soil K2O content was lower on well fertilized treatments compared to 2010, which can be attributed to high winter wheat yield in 2016. Interaction time x N treatment was not significant for investigated soil properties. Precision sampling revealed complex relations in soil properties presumably conditioned by more agroecological factors.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA