Succinic acid-2,2-dimethylhydrazide (SADH) applied as 1000 and 2000 ppm sprays to ‘Trent’ and ‘Canby’ red raspberries on 4 dates during the 1970 and the 1971 growing seasons did not effect bud survival, yield, or number of flowers per lateral. Inconsistent reductions occurred in berry weight, number of flowering laterals, and buds per cane diameter. In all instances cane height was reduced.
Size and number of plots is an important consideration for strawberry breeders and other researchers engaged in the evaluation of strawberry cultivars. Edgar (2) found at East Mailing that plots of about 50 plants planted on the square were best, but Taylor (3) considered the variability in Edgar’s plots to be abnormally low, and advocated plots of 24 plants arranged in a twin row. He considered that seven replicates were necessary to measure a 20 percent difference at the 5 percent level of probability. Baker and Voth (1) in California considered 3 plots of 50 plants or 8 of 25 plants necessary to reduce heterogeneity to an acceptable level for scoring clones for resistance to Verticillium wilt in a “wilt nursery.” All of these researchers were working with strawberries on the hill system, whereas the matted row system is standard in Eastern North America.
3-indolebutyric acid (IBA) applied to the midvein of lowbush blueberry leaves stimulated lateral shoot development in what is normally an unbranched stem. IBA was effective when applied as a 2% mixture in either lanolin or water. The site of application and habit of shoot growth were shown to influence the treatment response.