Researches regarding the attack of the Monilinia fructigena fungus (ADERH. & RUHL.) honey on some varieties of apple, hartiest location, Arges county

Abstract

The attack of the Monilinia fructigena fungus responsible for the appearance of apple moniliosis is present every year, whenever this species is grown. The Monilinia fructigena fungus is present yearly and in orchards grown in the research area. Research has been carried out in the untreated variants of a fungal attack on varieties: Florina, Generos, Goldrush, Idared and Topaz. The attack on the sprout and the fruit was monitored and the frequency, intensity and degree of attack were calculated. Under the conditions of 2016, the attack on the sprouts registered different values of the frequency and the intensity was maximum. The highest value of the 10.5% attack was determined in the Idared variety, considered as control, followed by the Topaz and Goldrush varieties, with attack rates of 8% and 6.5%. The fruits attack noted in the summer showed a value of 11.4% for the Idared variety followed by the Topaz variety with 8.7%. The fruits attack recorded in the autumn, at the harvest was 36.6% for the Idared variety followed by the Topaz variety by 31%. The Florina variety recorded the lowest level of attack on fruits before harvesting with an attack rate of 22%. The Goldrush and Generos varieties recorded 24.5% and 28.55 attack levels for fruit before harvest. The intensity of the fungus attack on the fruit before the ride and the attack on the sprouts were considered 100%, considering that the fruits and the sprouts affected by the pathogen attack are compromised. In this case, the attack value was given by the attack incidence value. The data obtained were statistically assured.