Disease
Spring/summer cherry diseases (part 2)
As mentioned last issue, some hints on how to improve the crop disease situation are presented here.
Manage Alternaria leaf blotch & fruit spot
Alternaria leaf blotch is characterised by irregular red–brown coloured lesions on the leaves. The lesions might expand under favourable conditions, followed by yellowing of the leaves and then defoliation of the trees.
Spring/summer cherry diseases
Just when your cherry patch was looking magnificent, you turn your back and suddenly those healthy green leaves are not looking so good—they are full of holes, or looking a bit tattered.Shot hole, latent infections of bacterial gummosis and necrotic ringspot virus are three diseases that come to mind.
Summer trunk canker
Summer trunk canker is more common during prolonged wet, windy spring and summer seasons on soils that are poorly drained.
Brown rot
The incidence of brown rot and blossom blight is related to temperature and duration of wetness.
Peach leaf curl
Peach leaf curl is favoured by a cool and wet spring around budswell followed by warm, humid conditions, which bring about rapid growth.
Bacterial spot
While bacterial spot is more common on susceptible varieties grown in coastal areas, it is also becoming a problem in inland production areas.
New Ecocarb PLUS—organic dual-action broad spectrum fungicide
Organic Crop Protectants is thrilled to reveal their very latest innovation in plant protection, an organically certified solution for a range of fungal problems. Ecocarb PLUS is a new dual action fungicide combining the curative powers of potassium bicarbonate with the protective and systemic barrier properties of potassium silicate.
Manage shot hole and internal cork
Wet conditions in late winter to early spring can activate shot hole spores that have remained dormant in bud scales and twig lesions during the previous season.
