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detrimental effects to plants. Controlled-release Fertilizer Longevity Influences Impatiens Growth Growers of containerized flowering crops should be aware that adjusting controlled-release fertilizer (CRF) application rates is necessary when using different

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-release fertilizer (CRF). The CRF was worked into the upper 0.5 cm of the substrate. Each container of substrate was then irrigated with 1 L deionized water (four applications of 250 mL spaced 30 min apart and applied evenly by hand over the surface of the substrate

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cattle manure [aLCM; fortified with 50 mg·L −1 of NO 3 -N twice (at start and in mid-July), EC = 2.0 dS·m −1 ; Table 1 ]; and 4) Nutricote 18-6-8 (18N–6P–8K) T100 controlled-release fertilizer (CRF) with micronutrients (Plants Products Co. Ltd

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subirrigation watering ( Barrett, 1991 ; Dole et al., 1994 ). Similarly, reduced controlled-release fertilizer (CRF) rates are recommended when capillary mat irrigation is used ( Havis, 1982 ). When leaching is reduced or eliminated, buildup of fertilizer salts

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controlled-release fertilizer (CRF). Traditional constant liquid fertilization of containerized plant materials growing in porous media can lead to the generation of excessive runoff ( Rathier and Frink 1989 ). Controlled-release fertilizers frequently lead

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.2) versus high (0.4 to 0.6) LF. Use of controlled-release fertilizers (CRFs) has increased mineral nutrient use efficiency by supplying nutrients corresponding with plant demand and minimizing pathways of losses (e.g., microbial transformation, soil

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( Cox, 1997 ), whereas some commercial growers often deliver 125 to 150 ppm of nitrogen to bedding plants and geraniums. By altering the placement of controlled-release fertilizers (CRFs) within containers, growth of traditional weeds can be decreased

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a fixed-rate irrigation schedule. The two irrigation schedules were evaluated using two controlled-release fertilizer (CRF) application rates to determine if fertilizer efficiency could be increased with ET-based irrigation. Materials and Methods

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conditions are suboptimal. Managing Nursery Crops With Species-Specific Fertilizer Rates Applying controlled-release fertilizer (CRF) is a common practice in containerized nursery crop production. In a temperate climate, Clark and Zheng (p. 370) found

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efficiency has been achieved by optimizing rates of fertilization using controlled-release fertilizers (CRFs), reducing water volume applied, and adjusting water application timing. However, current BMPs recommend CRFs be used to maintain substrate solution

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