1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73

All nutrients were applied as per 1998 foliar and soil test results.
Foliar nutrients: zinc, magnesium sulfate, manganese sulfate, urea, calcium and boron were applied.
Soil applied nutrients consisted of only 30 lb/A (actual) N broadcasted this season.

Due to a severe regional drought, no measurable amounts of rainfall occurred between the end of May
and the end of August. Irrigation was applied on a weekly basis beginning 18 May and continuing on
a 7-day schedule until 14 September.

On 16 Sept. Hurricane Floyd hit our site with 23 mph sustained winds and contained gusts up to 65
mph. It also dropped an estimated 10.57" of rain on our site. Since first picking (which contained a
majority of the fruit) had already been completed, crop loss was minimal and no tree damage occurred.

All data has been collected for 1999. Leaf and soil samples were collected for analysis.

No tree loss occurred this year due to high windstorms or other natural occurrences that might expose
any brittleness between the scion and rootstock.
One tree on P1 died this season from root rot (Phytophthoraspp.), while another tree on P1 and two
trees on CG 30 are showing tree decline due to partial root death.

Multiple limb strikes of fireblight on a single M26 tree was the only occurrence of this bacterium in

All yield data is preliminary as statistical analysis is still pending.
V2 attained the highest cumulative fruit yields this season with an average harvest of 106.6 kg. per
tree. M26 had the second highest cumulative yield but was able to attain the largest average fruit size
with an average of 151.26 grams/fruit.
Yield efficiency has not yet been evaluated for the '99 season.

CG 30's yield performance was the poorest in all three harvest yield data points. Major tree decline
due to partial root death on two of the five remaining trees made a fully mature, healthy crop



Avg. Fruit Count

Avg. Fruit Weight

Avg. Fruit Size




Usefulness of Findings:
Although we understand the highly precocious nature of the CG 30 rootstock, we may be discovering
a sensitivity to heavy soils that has not been widely documented.

Work Planned for Next Year:
Further evaluation and documentation of rootstock sensitivity to Phytophthoraspp. may provide
stronger documentation as to how these rootstocks perform in heavy soil conditions.

1999 North Jersey Tree Fruit Annual Report