The Influence Of Irrigation With Intensive Fish Farm Water On The Quality Indicators Of Aerobic Rice (Oryza Sativa L.)

This study examined the effect of effluent water from an intensive fish farm on rice (Oryza sativa L.) grown under aerobic condition in Hungary. During the experiment four treatments were used: T-1- effluent water; T-2- effluent water supplemented with gypsum; T-3- effluent water diluted with surface water and supplemented with gypsum; T-C- control treatment. A number of quality parameters (TKW - thousand kernel weight, MQP - milling quality parameters, MC - mineral content) of the selected Hungarian rice variety (M 488) were studied. While, in the TKW test no statistically significant difference was found between the treatments, MQP test showed that there was a statistically significant difference between treatments in the percentage of whole polished (white) rice. The highest percentage was in T-C with 68.5%, T-1, T-2, and T-3 had 60%, 61.1% and 59.12%, respectively. The analytical analysis of MC highlighted, that the Ca and Na contents in rice seeds were not affected by the treatments, however, under T-3 a statistically significant decrease in the P, K and Mg contents of rice seeds was observed. Altogether, irrigation with fish farm water affects some quality parameters of the chosen rice variety in different ways, this effect can remain stable while reducing stress levels.