Režim vlažnosti tla u uvjetima uzgoja trešnje i kruške

master's thesis

• Title (english): Soil moisture regime in cherry and pear cultivation
• Author: Toni Jagečić
• Mentor: Stjepan Husnjak (mentor)
• Committee member: Stjepan Husnjak (predsjednik povjerenstva)
• Committee member: Zlatko Čmelik (član povjerenstva)
• Committee member: Danijela Jungić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Soil Science); Zagreb
• Defense date and country: 2017-09-18, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Istraživanja dinamike sadržaja trenutačne vlage u tlu u uzgoju voćnih vrsta, koja bi ukazala na potrebu za reguliranjem režima vlažnosti, najčešće nedostaju. Spomenuta istraživanja mogu se provoditi praćenjem režima vlažnosti tla koji predstavlja periodične promjene vlažnosti po dubini profila. Rezultatima takvih istraživanja stječe se uvid o eventualnoj pojavi viška ili manjka oborinske vode u tlu. Ciljevi ovoga rada su utvrditi režim vlažnosti tla na dobru Agronomskog fakulteta Sveučilišta u Zagrebu u vegetacijskom razdoblju (IV. – IX. mjesec) uzgoja trešnje i kruške tijekom 2016. godine, te utvrditi koliko je značajan bio utjecaj pojedine voćne vrste na režim vlažnosti u istraživanom razdoblju.
Vrijednosti trenutačne vlage ispitivanog tla određivale su se uzorkovanjem tla. Uzorkovanja su se obavljala metalnom sondom, na dvije dubine, tri puta mjesečno u tri ponavljanja za svaku voćku, nakon čega su uzorci tla stavljani u staklene bočice. Sadržaj vlage određivao se gravimetrijskom metodom u laboratoriju.
Određivanjem režima vlažnosti tla u uzgoju trešnje i kruške utvrđeno je kako kod trešnje vrijednosti trenutačne vlage tla nisu padale ispod točke venuća, dok su kod kruške vrijednosti trenutačne vlage padale ispod točke venuća u srpnju, kolovozu i rujnu. U ostalom dijelu istraživanog razdoblja sadržaj vlage kretao se između kapaciteta tla za vodu i točke venuća. Statističkom obradom rezultata trenutačne vlage u tlu utvrđena je značajna razlika između režima vlažnosti tla trešnje i kruške i to za obje dubine uzorkovanja. Proračunom bilance oborinske vode u tlu utvrđen je manjak za trešnju u srpnju, kolovozu i rujnu u iznosu od 79,0 mm, a za krušku u istom vremenskom razdoblju u iznosu od 104,2 mm.

Abstract (english)

Research into the dynamics of current moisture content in the soil in fruit cultivation, which would point to the necessity to regulate soil moisture regime, is scarce. The mentioned research may be conducted by monitoring the soil moisture regime that shows periodic changes in moisture with regard to profile depth. Such results give an insight into the possible surplus or deficiency of rainwater in the soil. This paper’s goals are to determine the soil moisture regime in the area of the Faculty of Agriculture at the University of Zagreb, in the vegetation period (April – September) of cherry and pear cultivation in 2016, and to determine how significant would the influence of a particular fruit be on the soil moisture regime in the period that is being researched.
The value of current moisture in the soil researched has been determined by soil sampling. The samplings have been conducted with a metal probe in two depths, three times a month for each fruit tree, after which the soil samples have been put in glass jars. Moisture content was determined in a laboratory, using a gravimetric method.
The determining of moisture regime in cherry and pear cultivation has affirmed that, when it comes to cherry trees, the current moisture in the soil did not fall below the point of wilting, while, when it comes to pear trees, the value of current moisture in the soil fell below the point of wilting in July, August and September. For the rest of the research period, moisture content switched between soil water capacity and the point of wilting. The statistical analysis of the collected data on current moisture in the soil shows a significant difference between soil moisture regime for cherry and pear trees in both depths sampled. Moreover, the calculating of the soil water balance has affirmed the deficiency of soil water in cherry trees in July, August and September in the amount of 79.0 mm, while the deficiency of soil water in pear trees amounted to 104.2 mm.

• Keywords: režim vlažnosti tla; bilanca oborinske vode; trešnja; kruška
• Keywords (english): soil moisture regime; soil rainwater balance; cherry tree; pear tree
• Language: croatian
• URN:NBN: urn:nbn:hr:204:066882
• 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: Access restricted to students and staff of home institution
• Created on: 2017-10-23 10:58:46