SOIL MOISTURE REGIME ON LUVISOL IN THE EAST CROATIA

Autor: Rastija, D., Zdenko Lončarić, Rastija, Mirta, Japundzic-Palenkic, Bozica, Semialjac, Z.
Jazyk: chorvatština
Rok vydání: 2008
Předmět:
Zdroj: Poljoprivreda
Volume 14
Issue 2
Poljoprivreda, Vol 14, Iss 2, Pp 38-45 (2008)
Web of Science
ISSN: 1848-8080
1330-7142
Popis: Cilj je istraživanja bio utvrditi manjak vode u tlu tijekom vegetacijskoga razdoblja kukuruza i pšenice na osnovi poljskih mjerenja i proračuna bilance oborinske vode u tlu do dubine 60 cm. Manjak vode u tlu u prvoj godini istraživanja (2003.) bio je izražen tijekom cijele vegetacije kukuruza (Zelčin 336,1 mm, Donji Miholjac 325,7 mm), a najveći je manjak evidentiran u srpnju i kolovozu, što se negativno odrazilo na prosječni prinos od 5,52 t ha-1. Druga godina istraživanja (2004.) bila je znatno povoljnija te je manjak vode u tlu tijekom vegetacije pšenice zabilježen samo u svibnju na oba lokaliteta (Zelčin 40,5 mm, Donji Miholjac 32,6 mm), što nije bitnije utjecalo na prinos zrna pšenice (5,08 t ha-1). Izrazito niske vrijednosti trenutačne fiziološki aktivne vlage tla (FAv) zabilježene su tijekom ljeta 2003. godine, a najniže vrijednosti (Zelčin 8% FAv-a, Donji Miholjac 7% FAv-a) izmjerene su u trećoj dekadi rujna, dok su više vrijednosti utvrđene 2004. godine, uz minimume 38% FAv-a u Zelčinu i 33% 8% FAv-a u Donjem Miholjcu. Statistički značajno više vrijednosti trenutačne vlage tla (P
The aim of the research was to determine water deficit in the soil (to 60 cm depth) on the basis of field measurements as well as calculation of soil water balance during the vegetation season of maize and winter wheat. In the first year of research (2003) water deficit was emphasized during the whole vegetation season of maize (Zelčin 336 mm; Donji Miholjac 326 mm); but the most marked water shortage was evident in the July and August; having negative effect on maize grain yield (5.52 t ha-1). The second year of research (2004) was more favourable; and water deficit which on the both sites occurred only in the May (Zelčin 40;5 mm; Donji Miholjac 32;6 mm); did not affect wheat grain yield (5.07 t ha-1). Particularly low values of available water content (AWC) were observed during the summer of 2003; and the lowest values (8% for Zelčin; and 7% for Donji Miholjac) were recorded in the third decade of September. In the 2004 much higher values of AWC were achieved (40.5% for Zelčin; and 32.6% for Donji Miholjac). In the deeper soil layers significantly higher (P
Databáze: OpenAIRE
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