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
-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
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
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
.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
( 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
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
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
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
Bud Failure of Green Ash The influence of tree nitrogen (N) status in autumn on bud necrosis the following spring was evaluated using green ash trees grown with N from either urea formaldehyde (UF) or a controlled release fertilizer (CRF). Scagel et