ZESZYT Nr 22/ 2015 Abstrakty Volume No. 22/2015 Abstracts |
1. The
influence of soil properties and land use on the phosphate level in
soils from Lubelskie region – A. Banach, A. Wolińska, M. Błaszczyk, Z.
Stępniewska Abstrakt. Phosphorus
is an important life-supporting nutrient and therefore it is often
applied in fertilizers. As a result, its pool in soil may increase due
to the presence of various elements effectively binding P, making it
unavailable to plants. Each soil exhibits many characteristics
important in P cycling, with the aeration state (redox potential and
moisture), pH, and the presence of N, Ca, and Fe being the most
important. In addition, agricultural practices, e.g. fertilization, may
strongly affect P pools in the soil. We studied 7 different, both
cultivated and natural, soil types from Lubelskie region. We found that
agricultural practices strongly affected the soil aeration state, pH,
and moisture level reducing them significantly. As a result, phosphate
concentrations increased significantly up to 10 mg kg-1 in comparison
to ca. 2–4 mg kg-1 in non-cultivated soils. This was caused by changes
in soil characteristics depending on the soil type (availability of N,
Ca, and Fe). The levels of nitrates increased up to 50 mg kg-1,
favouring P immobilization. It could be concluded that the soil
aeration state (related to the manner of soil use) is important in P
cycling through the effect on other soil characteristics, which differ
among soil types. key words: arable soils, phosphate availability, soil characteristics, land use T |