Efficacy of new fungicide mixture in control of Phytophthora infestans (Mont) de Bary and Alternaria solani Sorauer in potato and tomato crops

Abstract

Field trials were carried out to evaluate the efficacy of a new fungicide mixture fenamidone + propamocarb-hydrochioride in the control of potato late blight and tomato early blight. The experiments were contucted in three localities: Majur (Šabac), Dobanovci (Beograd) i Nova Pazova, according to EPPO/OEPP standard methods. Two doses (2.00 and 1.67 L/ha) of trade formulation Consente (propamocarb-hydrochloride 375 g/L + fenamidone 75 g/L) were used. According to the results Consente (2.00 L/ha) showed highest efficacy (90.11 - 97.23%) in the control of potato late blight and tomato early blight. Referent formulation Tataoo (propamocarb-hydrochloride 248 g/L + mancozeb 306.1 g/L) exhibited statistically lower efficacy (83.68 - 91.60%) than Consente.

Ispitivana je efikasnost nove kombinacije fungicida fenamidon propamokarb-hidrohlorid, u cilju suzbijanja prouzrokovača plamenjače i crne pegavosti krompira i paradajza. Ispitivanja su izvedena u usevima krompira i paradajza na lokalitetima Majur (Šabac), Dobanovci (Beograd) i Nova Pazova, u skladu sa standardnim metodama OEPP/EPPO. Primenjen je preparat Consento (propamokarb-hidrohlorid 375 g/L + fenamidon 75 g/L) u dve količine:2.00i 1.67 L/ha. Preparat Consento je pokazao visoku efikasnost (90.1 1 -97.23%) u suzbijanju Phytophthora infestans i Alternaria solani pri količini primene od 2.0 L/ha, a nešto slabiju (84.85 - 92.44%) pri količini od 1.67 L/ha. Referentni preparat Tatoo (propamokarb-hidrohlorid 248 g/L + mankozeb 306.1 g/L) primenjen u količini od 4.00 L/ha ispoljio je, na većini lokaliteta statistički značajno slabiju efikasnost (83.68 - 91.60%) u odnosu na preparat Consento.