Phosphorus and potassium availability in hydromorphic soils of the Sava valley area in Croatia (CROSBI ID 659684)
Prilog sa skupa u zborniku | stručni rad | međunarodna recenzija
Podaci o odgovornosti
Petošić, Dragutin ; Kovačević, Vlado ; Kaučić, Dražen
engleski
Phosphorus and potassium availability in hydromorphic soils of the Sava valley area in Croatia
In this study a part of agricultural land of eastern part of Sava valley area was covered. It is narrow belt longitude approximately 150 km and width form 5 to 10 km in west-eastern direction. Slobostina and Josava rivers are border toward west and east direction, respectively. Also, it is delimited by river Sava toward south and by Psunj, Pozeska gora and Dilj Mountains toward north. Unfavorable air-water relationships have been limiting factors of field crop yields in Croatia. Considerable increases of main arable crops yields were made by applied hydromelioration. However, retardation of growth and typical chlorosis as symptoms of either phosphorus (violet colouration of leaves) or potassium deficiencies (edge necrosis of leaves and inclination to lodging at maturity stage) were observed on some soils, mainly in maize crops. With aim of testing P and K availabilities, we analyzed a total of 480 soil profiles covering area of 31227 ha. Plant available P and K were determined by the Ammonium- Lactate method. P availability in the 0-30 cm of soil layer in about 30% of the tested agricultural land was very low P (until 5 mg P2O5 100 g-1 of soil), next 32% was in the range low P availability (from 5.1 to 10 mg), while only 17% has good or very good P availability (above 20 mg). Especially a high frequency of low P availability was found in vertic gley, amphygley and hypogley soils (28% tested agricultural land). Concerning the degree of K availability in the depth 0-30 cm nearly one third of the tested area was low supplied with potassium (less than 10 mg K2O/100 g of soil). Especially high frequency of this range of K availability is found in hypogley (near 50% of area covered by this soil type). The most favorable K status was found in semigley alluvial soils: only 7.7% of the area of this soil is moderate supplied with K and even 27.5% of the area is in range of very high K availability (above 25 mg K2O/100 g of soil).
phosphorus availability ; potassium availability ; AL-method ; hydromorphic soils ; Croatia
Rad je dostupan u Zborniku radova: http://agribalkan2017.nku.edu.tr/ http://ziraat- en.nku.edu.tr/
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
980-987.
2017.
objavljeno
Podaci o matičnoj publikaciji
Procedings, 2nd International Balkan agriculture congress
İstanbulluoğlu, Ahmet ; Önemli, Fadul
Tekirdağ: Namık Kemal University Faculty of Agriculture, Süleymanpaşa-Tekirdağ
978-605-4265-49-7
Podaci o skupu
2nd International Balkan agriculture congress
poster
16.05.2017-18.05.2017
Tekirdağ, Turska