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contract approved hourly rate. Any necessary repairs, other than routine irrigation head replacement must be approved in writing by the City prior to start of work. L20. Fertilizer and materials shall be delivered in original, unopened, and undamaged containers showing weight, analysis, and name of manufacturer. All fertilizer materials shall be stored in manner to prevent wetting and deterioration. L21. Fertilizer and insect /disease control materials shall be applied at the rates established by accepted horticultural standards, manufacturer's recommendations, and as approved by City. L21.1 Lawn: For control of fire ants, use Award Fire Ant Killer. Follow manufacturer's instructions for applications amounts and rates. L21.1.1. February - Apply granular 20 -0 -20 with Atrazine or approved equal; St. Augustine 'Floratam' Sod and 'Argentine' Bahia Sod. L21.1.2. May - Apply liquid 16 -4 -8 with micro - nutrients and Telstar or equal insect control. L21.1.3. September - Apply liquid 16 -4 -8 with micro - nutrients and Telstar or equal insect control. L21.1.4. December - Apply granular 20 -0 -10 with Atrazine. L21.1.5. The Spring thru Fall application rates for lawn areas will vary according to weather and environmental conditions, but typically average 75 granular pounds per 1000 sq. ft. L21.2 Palms (except Phoenix Dactilifera and Phoenix Canariensis Date Palms): L21.2.1. Apply four applications per year (at quarterly intervals) of liquid 16 -4 -8 with micro - nutrients and granular 13 -3 -13 with micro - nutrients. L21.2.2. The time of the applications will coincide with the lawn applications. L21.2.3. The liquid and granular applications will alternate throughout the year (2 applications of liquid and 2 of granular). L21.2.4. Supplemental Manganese Sulfate and Sul- po -mag may be required to correct nutrient deficiency. L21.2.5. OTC (Lethal Yellowing) injections, as required. L21.3 Trees: L21.3.1. Three applications per year of 13 -3 -13 granular fertilizer or approved equal. L21.3.2. Shrubs and Groundcover: Four applications per year (each three months). Flowering shrubs are to receive applications of granular 8 -10 -10 SCU with micro - nutrients supplemented with liquid 16 -4 -8 with micro - nutrients. Non - flowering shrubs are to receive applications of granular and liquid 16 -4 -8 with micro - nutrients. All Ixora species shall receive TRI -NITE (or equivalent) w /minor elements fertilizer. L21.3.3. Due to lack of above ground irrigation on Collins Avenue median, plant material is to receive for applications per year (each three months) of liquid 16 -4 -8 with micro - nutrients (no granular fertilizer is to be used). L21.4. Seasonal Color: L21.4.1. Apply one initial and one "mid- term" application of Nutricote total 70 day 13 -3 -13 fertilizer for each seasonal color planting. L21.5 Phoenix Dactilifera (Date Palms): L21.5.1. Frequency of Treatment: Palms will be fertilized and treated for disease and insect control on a bi- monthly basis. L21.5.2. Fertilization (4 applications per year): In March and June, fertilize with 8 -10 lbs. of 12/5/12 with minors or close equivalent. In September and December, fertilize with 3 tp 4 lbs. of 12/5/12 with minors. Fertilizer should be spread in small piles spaced evenly around the base of the trunk approximately 12 inches out from the base. L21.5.3. Disease Control: In March and September, root drench with Chip -Co 26019 and Chip -Co Aliette. In June and December, root drench with Clearys 3336 and Chip -Co Aliete. In April, July and October, root drench with Subdue. L21.5.4. Treatment for lethal yellowing: Apply injection of OTC, 5 -8cc. per tree per application.