FUNGICIDE WITH HIGH ACTIVITY AGAINST FUNGAL DISEASES IN WHITE LUPINE CROP

Abstract: The results of laboratory and field study of Azorro KS fungicide efficacy (suspension concentrate) against anthracnose and other diseases of lupine are presented. The aim of the research is to reveal biological and production efficiency of Azorro fungicide against anthracnose and other diseases of white lupine, to establish a highly effective rate of its application for inclusion in the cultivation technology. The work was carried out in 2022-2024 in the conditions of Bryansk region. The object of study - seedlings and vegetative plants of white lupine of Michurinsky variety. To determine the effectiveness of the curative and protective effect of fungicide Azorro KS (carbendazim + azoxystrobin, 300 +100 g/l), four rates - 0.5; 0.8; 1.0; 1.5 l/ha - were studied in laboratory experiments. Biological efficiency was determined by the number of affected seedlings grown in paper-polyethylene rolls compared to the control (without fungicide treatment). High biological efficiency of therapeutic and protective action (96.8 and 98.9%) against anthracnose pathogen was shown by the maximum taken rate - 1.5 l/ha, which is higher by 2.3 and 2.9%, respectively, than the efficiency of the reference fungicide Colosal Pro - 0.4 l/ha. In the field experiment fungicide Azorro (1.5 l/ha) was applied in the phases ‘1-2 pairs of true leaves’ and ‘budding’, the effect of fungicide was determined in comparison with the control without treatment. The biological efficiency of Azorro against anthracnose was 94.0%, which is 3.0% higher than the reference fungicide. In the ‘shiny bean’ phase, the number of beans affected by anthracnose decreased to 1.1% when treated with Azorro, compared to 62.9% in the control. Fusarium plant damage was reduced from 18.5 to 6.8 % in the variant with Azorro. The spread of grey and white rot on beans was reduced by 2.5 7.0 times, respectively. Preservation of productive plants by harvesting increased by 46.3%. Seed yield increase of 1.25 tonnes/ha (NSR05-0.033) was obtained, cost recovery was 5.94 rubles from ha