Utjecaj načina korištenja zemljišta na kemijska svojstva pseudogleja

master's thesis

• Title (english): The impact of land use on chemical properties pf pseudogley
• Author: Arijana Ivošević
• Mentor: Aleksandra Bensa (mentor)
• Committee member: Aleksandra Bensa (predsjednik povjerenstva)
• Committee member: Vedran Rubinić (član povjerenstva)
• Committee member: Željka Zgorelec (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Soil Science); Zagreb
• Defense date and country: 2019-09-11, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Cilj ovog rada je bio utvrditi promjene kemijskih svojstava pseudogleja pri različitom načinu korištenja (ratarska, voćarska i povrtlarska proizvodnja) u odnosu na izvorno tlo pod prirodnom vegetacijom (livada). Istraživanje je provedeno na malom obiteljskom gospodarstvu Lasek u općini Lipovljani. Ukupno je analizirano 20 kompozitnih uzoraka površinskog horizonta, od čega po 5 sa svakog načina korištenja. U uzorcima je određen pH, hidrolitski aciditet, kapacitet i stupanj zasićenosti... More adsorpcijskog kompleksa (AK) tla bazama, količina i karakter humusa, te koncentracija fiziološki aktivnog fosfora (P2O5) i kalija (K2O). U voćnjaku su utvrđene najniže vrijednosti pH (prosječno 4,15) i potrebe za umjerenim dozama materijala za kalcizaciju, dok se kod ostalih načina korištenja prosječni pH kretao od 4,61 do 4,98 što upućuje na potrebu za niskim dozama materijala za kalcizaciju. U voćnjaku je utvrđen i najniži stupanj zasićenosti AK tla bazama (37,54 %), dok je kod ostalih načina korištenja bio u rasponu 47,94 - 50,21 %. Prosječna količina humusa je bila viša u tlu pod livadom (3,78 %) nego kod antropogeniziranih tala kod kojih je bila u rasponu od 2,44 % (oranica) do 2,84 % (voćnjak), zbog obrade tla koja potiče mineralizaciju i nedostatnog unosa organskih ostataka. U svim varijantama istraživanja utvrđen je kiseli i slabo kiseli karakter humusa. Opskrbljenost fiziološki aktivnim fosforom je pri svim načinima korištenja bila vrlo niska, uz najviše vrijednosti na oranici, dok je opskrbljenost kalijem u voćnjaku i livadi bila vrlo niska, u povrtnjaku niska, a na oranici dobra. Poboljšanje kemijskih svojstava izvornog pseudogleja u smislu višeg pH, većeg stupnja zasićenosti bazama AK-a i bolje opskrbljenosti hranivima, utvrđeno je na oranici i povrtnjaku, dok je u voćnjaku zbog neadekvatne gnojidbe kiselim gnojivima utvrđeno smanjenje kvalitete tla. Less

Abstract (english)

The objective of this paper was to determine the changes in chemical properties of pseudogley under different land use types (crop, fruit and vegetable production) compared to the soil under natural vegetation (meadow). The study was conducted on a small family farm Lasek in Lipovljani township. In a total of 20 composite samples of surface horizons were analyzed, out of which 5 for every land use type. The pH, hydrolytic acidity, capacity and degree of saturation of the adsorption... More complex of soil (AC) with bases, amount and character of humus, and the concentration of physiologically active phosphorus (P2O5) and potassium (K2O) were determined in the samples. In the orchard, the lowest pH values (average 4.15) and the need for moderate doses of calcification material were determined, while in other land use types the average pH ranged from 4.61 to 4.98, indicating the need for low doses of calcium material. Also, in the orchard, the lowest degree of saturation of AC with bases was determined (37.54 %), while in other land use types it ranged from 47.94 to 50.21 %. The average amount of humus was higher in the soil under meadow (3.78 %) than in the anthropogenised soils, ranging from 2.44 % (ploughland) to 2.84 % (orchards), due to tillage that encourages mineralization and inadequate input of organic residues. In all variants of the study the acidic and poorly acidic character of humus was found. The supply level of physiologically active phosphorus was very low in all land use, with the highest value in the crop production, while the supply by potassium in the orchard and the meadow were very low, in the vegetable production low and in the crop production good. The improvement of the chemical properties of the natural pseudogley in terms of higher pH, higher degree of saturation of AC with bases and better supply of nutrients, was found in crop and vegetable production, while in the orchard due to inadequate fertilization with acidic fertilizers, decreased of soil quality was found. Less

• Keywords: kemijska svojstva; livada; oranica; povrtnjak; pseudoglej; voćnjak
• Keywords (english): chemical properties; crop production; meadow; orchard; pseudogley; vegetable production
• Language: croatian
• URN:NBN: urn:nbn:hr:204:129673
• Study programme: Title: Agroecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologija (magistar/ magistra inženjer/inženjerka agroekologija)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-09-23 06:18:21