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- Title
CHLOROPHYLL FLUORESCENCE RESPONSES TO PESTICIDES WITH COPPER ACTIVE INGREDIENT IN PANNON FRANKOS AND NARANCSÍZŰ GRAPE VARIETIES.
- Authors
BAGLYAS, FERENC; PÖLÖS, ENDRE
- Abstract
Pulse Amplitude Modulated (PAM) fluorometry is a sensitive and rapid method used to assess toxic effect of chemical components in plants. This study evaluates the difference in leaf sensitivity of two grapevine varieties, Pannon frankos and Narancsízu, to copper. The photosynthetic efficiency of the varieties was measured as the ratio of variable to maximal chlorophyll fluorescence (Fv/Fm). Young and older leaves of these varieties were exposed to four different pesticides with copper active ingredients in the recommended dosage: Bordói por (copper sulphate), Champion (copper hydroxide), Rézoxiklorid (copper-oxychloride) and Ridomil Gold Plus (mefenoxam+copper oxychlorid) and their physiology were studied 4 times, on the 2nd, 4th, 8th and 12th days after treatments. These pesticides caused proportional decrease in the photosynthetic efficiency.
- Subjects
PULSE amplitude modulation; FLUORIMETRY; BOTANICAL chemistry; COPPER poisoning; PESTICIDE research
- Publication
Agricultural Management / Lucrari Stiintifice Seria I, Management Agricol, 2014, Vol 16, Issue 1, p41
- ISSN
1453-1410
- Publication type
Article