Research of sweet cherry cracking and types of cracks | Pētījumi par saldo ķiršu plaisāšanu un plaisu veidiem
2014
Ruisa, S., Latvian State Inst. of Fruit-Growing, Dobele (Latvia) | Feldmane, D., Latvian State Inst. of Fruit-Growing, Dobele (Latvia)
Rain induced sweet cherry cracking is an importat economic problem for growers. The cracking level and the type of cracks can be influenced by water penetration in fruit, the features of cultivars and rootstocks, as well as growing conditions. Four sweet cherry cultivars on rootstock Prunus mahaleb L. were tested for growing under VOEN rain covers for the first time in Latvia. The total cracking level (in %) and the types of cracks were determined in 2012 and 2013. The cultivar ‘Iputj’ had a high level of cracking, mainly with cracks at the pedicel end and the stylar end. The cracking level of the cultivar ‘Tyutchevka’ was medium, the type of cracking varied depending on season. The cultivar ‘Lapins’ also had a medium cracking level, the cracks at the pedicel and stylar end dominated. The proportion of cracked fruits significantly decreased if grown under covers for the cultivars ‘Iputj’, ‘Tyutchevka’ and ‘Lapins’. The cultivar ‘Bryanskaya Rozovaya’ had a low fruit cracking level, besides no significant effect of the cover was detected for this cultivar.
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