-4- 



A close relative, Diuron, which is less soluble, has been found to be 

 just about as effective and much safer \Aien used according to directions. 

 It is very effective in controlling annual weeds for long periods when ap- 

 plied pre-emergence. 



The FDA has recently granted a label for the use of this material in 

 plantings of cultivated blueberries in Massachusetts and New Jersey. Read 

 the directions on the package carefully before use. 



Cold Resistance of New Blueberry Varieties 



How cold resistant are the new blueberry varieties Earliblue, Bluecrop, 

 Blueray, Berkeley, Herbert and Coville? Will they come through a severe 

 winter and produce a full crop? Are the blossoms resistant to late frosts? 

 Unfortunately, we have no experimental data on which to base answers to 

 these questions. We still must depend on a few random observations. 



Bluecrop and Blueray, at least under New Jersey conditions, appear to 

 be outstanding in their resistance to severe winter cold. For the past two 

 years these varieties have borne a full crop when other varieties, such as 

 Coville, Berkeley, Weymouth and Concord, had only 50-75 percent of a crop. 



Bluecrop and Herbert seem to be the outstanding in their ability to re- 

 sist spring frosts. Several instances have been reported when, following 

 severe frosts during bloom, these varieties came through with full crops 

 and others were severely damaged. This indicates that the reason is actual 

 cold resistance of the blossoms and not escape by late blooming. 



John S. Bailey 



I I I I I I I I I I I I I I I I 



' THIN THOSE PEACHES 



The consumer wants large, well-colored, high quality peaches. Peaches 

 of this type cannot be produced on an overloaded tree. The ability of a peach 

 tree to develop size in its fruits depends upon (1) leaf area per fruit, (2) 

 nutritional status of tree and (3) the water available throughout the growing 

 season. All growers may not be able to apply v/ater to supplement rainfall 

 but all growers can thin. In spite of high labor costs, the effort made to 

 thin the peach crop should pay dividends as shown in the table below. A 3-inch 

 peach has about 3 times the volume of a 2-inch peach. A 2 1/2-inch peach has 

 2 times the volume of a 2-inch peach. Trees bearing a heavy unthinned crop 

 of peaches produce small-sized low valued fruits. In addition, limb break- 

 age may be excessive which reduces the future bearing capacity of the trees. 



Number of Peaches per Bushel for Given sizes of Fruit 



Diameter of Peach Peaches in Bushel 



2 inch ---------------380 



2 1/8 inch 315 



2 1/4 inch 280 



