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As a rule, replant disease persists for around fifteen years in the soil, although this varies with local conditions. Pathogens survive in dead wood and organic matter until exposed to predation by their home rotting away, and will also depend on whether the original orchard was planted with dwarf or standard trees. Standards have more vigorous ...
Apple trees can recognize invading pathogens and mount a defense. [4] Often, the plant may be able to resist the pathogen, even though it has no genetic resistance to same. Apple trees seem to have a weak defense to A. mali, base on the fact that no survivors if leaves has been infected. [clarification needed]
Apple trees are susceptible to many diseases, and because pruning involves leaving open wounds from branch cuts, it's best to do so when the trees are dormant, says Ferguson. Waiting until winter ...
In southern Germany apple and pear trees have been a part of the landscape for a long time, and are difficult to protect. The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed]
Last spring (2023) was tough on apples in some places. Up on top of the ridges, well above 2,000 feet in elevation, things were fine. Up there trees were covered with fruit.
Deer begin laying down their travel routes to and from the apple and oak trees, long before the fruit and nuts even ripen. On these good years, some trees produce heavy, branch-bending loads ...
Bitter pit in the 'Summerred' cultivar Signs of bitter pit beginning on one apple, lower left. Bitter pit is a disorder in apple fruits, now believed to be induced by calcium deficiency. It occurs less commonly in pears. The disease was probably first reported in Germany where it was known as Stippen. [1]
A study published in 2014 found that plant matter – leaf litter and trunks of dead trees – in the Red Forest area decays at a far slower rate than is typical for forest detritus. The researchers found that microorganisms responsible for decomposing forest litter do not act on such matter within the contaminated zone at nearly the rate seen ...
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