[apple-crop] Late summer drop and fruit size

2014-01-13 Thread Vincent Philion
Hello, I’m analyzing some data and I have seemingly contradictory results. I’m hoping someone can comment and make sense of this: For a number of randomly selected trees, fruit drop was recorded starting late summer until harvest. For each tree, we recorded total fruit drop (and weight),

Re: [apple-crop] Late summer drop and fruit size

2014-01-13 Thread David Kollas
Vincent: Maybe the dropping left the LARGER fruits on the tree? I don't know if poor pollination results in both smaller fruit AND more early drop of the smallest, poorly-seeded fruits, but I can suppose it is a possible explanation of your observation. David Kollas Kollas Orchard, CT

Re: [apple-crop] Late summer drop and fruit size

2014-01-13 Thread Con.Traas
Hello Vincent, Did you control for tree size, by means of, for instance, calculating yield per trunk cross sectional area. If you did not, then your bigger trees, which by definition became bigger because they were more vigorous, might be expected to carry larger fruits (even if Total fruits

Re: [apple-crop] Late summer drop and fruit size

2014-01-13 Thread Ernest Rollins
Vincent, You did not mention the variety you are working with, and it may or may not be relevant. Some varieties adapt well to a multi-pick system where remaining fruit increases in size when the largest are harvested. I suppose “drop” is a type of “harvest.” Some