Field evaluation of the selected variants of Ruby Red grapefruit volunteer seedlings for greater HLB resistance/tolerance

Field evaluation of the selected variants of Ruby Red grapefruit volunteer seedlings for greater HLB resistance/tolerance

Report Date: 08/01/2018
Project: 16-007   Year: 2018
Category: Horticultural & Management
Author: Ping Duan
Sponsor: Citrus Research and Development Foundation

For the third Quarter of 2018, Project #16-007 conducted or completed the following activities: 1) The second phase of the Picos Farm planting was completed in May of 2018, in Block 4 Rows 27-32 and included 322 trees; 2) The PI meet with CRDF Project Manager and the Cooperating Grower to participate in a field and greenhouse progress review. A consensus decision was made to re-calibrate the Scope of Work and work schedule, and accordingly a revised project plan was submitted to the RMC of CRDF; 3) Rootstock liners including approximately: a) 250 US-942’s, b) 250 Sour Orange’s, and c) 200 R7T6 Indian Sour Orange’s were procured or germinated to meet the experimental needs of the Off-Site planting a the Scott Grove; 4) The USHRL farm crew continues to maintain the grapefruit scion variants planted previously on the Picos Farm in Nov, 2017, Block 2, Rows 9-15, and July 2017, Block 2 Rows 48-54 (production practices available upon request); 5) Initiated budding and grafting operation in USHRL greenhouse in anticipation of planting 750 to 800 trees with Cooperating Grower (Scott Groves), with approximately 75% (525 trees) of this task completed by June 30, 2018;


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