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May 1991 Vol. 2, #2 Vegetable Transplant Growers - Special Meeting We must meet to discuss the recent DPI response to our position letter concerning the movement of Tomato Spotted Wilt Virus within the state from out of state sources . The date of May 20, 10 AM at the SWFREC in Immokalee (2.5 miles south of Rt. 82 on Rt. 29) has been suggested as an appropriate time. Several of those who met last time (Nance - Superior Plants Mellinger -Glades Crop Care: Stansly, Vavrina, and McGovern -IFAS) have been charged by the IFAS Geminivirus Subcommittee with developing a plan of attack to support the inspection of FIL transplants and to generate recommendations designed to regulate all propagative material entering the state. It is imperative that you try to attend this meeting or FAX (813657-5224) your response prior to the meeting so everyone's voice may be heard. Solanaceous Crops and Transplant Age Tomatoes. Tomato transplant age studies were conducted at SWFREC and at Pennsylvania State University in cooperation with Mike Orzolek. The Florida study (11, 9, 7, 5, and 3 week old transplants) resulted in no differences in early yield or fruit size categories. After two harvests, total yield was reduced in both the 3 and 11 week old plants, and this appeared to be the result of a reduced pack out of extra-large tomatoes (Table 1). In the Penn State study (11, 9, 7, 4, and 3 week old transplants) extra-large fruit size was again reduced by older transplants, but overall marketable yield was unaffected by transplant age. Peppers . A Fall SWFREC study with pepper (11, 6, and 4 week old transplants) found that through three pickings all transplant ages yielded similarly. The fourth picking from the 6 and 11 week old transplants was reduced significantly compared to the 4 week old transplants, enough to affect total yield in the 11 week old transplants (Table 2). This study is being repeated in cooperation with Ed Key at the University of Delaware to determine transplant performance of Florida peppers in northern production areas. Additional studies are needed before generalities can be made about the effect of transplant age on crop yield however. Florida grown transplants certainly experience different environments when shipped to other production areas and the effects of these environments on transplant age needs to be determined. Varietal differences may also play a role. For a full report of these studies please ask for SWFREC Research Reports IMM-91-07 & 08. Well, until next time then ... - Charlie Vavrina P.S. Please try to make that meeting on the 20th!
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