FUNGICIDES EFFECT ON THE HEART ROT INFESTATIONS AT POMEGRANATE FRUIT

Yıl 2018, Cilt: 2 Sayı: 2, 1 - 5, 08.12.2018

İbrahim Kahramanoğlu Serhat Usanmaz Turgut Alas Murat Helvacı Atilla Aşkın

Öz

The
aim of present study was to determine the effects of four fungicide applications
on Heart rot caused by Alternaria spp at pomegranate fruits. Heart root causes
decay at pomegranate arils without obvious external symptoms. Slight change in
shape and abnormal skin colour occur at infested fruits but it is highly
difficult to comprehend fruits on the tree and even in pack houses. Studies
conducted in 2015 on two different pomegranate orchards with Wonderful cv.
located in Northern Cyprus. The experiment was planned in completely randomized
block design and repeated in two orchards. Four replications were assigned for
each treatment and five plants were selected for each replication. The treatments
of present study are: Control; Cupper oxide; Azoxystrobin; Boscalid +
Pyraclostrobin; and Propiconazole + Difenoconazol. Two repeated applications of
copper oxide were performed before flowering and two repeated applications of
other three fungicides performed during flowering and fruit set. Fruits of the
each replication were harvested by hand at commercial maturity. All fruits were
counted and put in different plastic creates and brought to pack house for
analysis. Thus, all fruits were cut to determine if disease exist. Number of
infected fruits by heart rot was noted and data from the experiments were
subjected to the analysis of variance. Mean separations were done by using
Tukey’s multiple range test at P < 0.05. Results showed that there is a
significant difference between the percent infestations of Heart rot in Orchard
1 and Orchard 2. However, the effects of tested chemicals are found to be
similar in both orchards. According to the results obtained, as expected, the
highest Heart rot infestation was found to be at the control treatment with
8.8% and the highest effect measured at Propiconazole + Difenoconazol
application with only 2.4%. All treatments were found to be effective in
reducing the infestations of Heart rot and significant differences were
determined among the treatments. Percent infestation of Heart rot for Boscalid
+ Pyraclostrobin, Copper oxide and Azoxystrobin applications were measured as
3.7%, 4.2% and 6.9%, respectively.  

Anahtar Kelimeler

Alternaria spp., Copper oxide, Northern Cyprus, Propiconazole + Difenoconazol, Wonderful cultivar

Kaynakça

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