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. Increased N during fertilization increased plant biomass and N uptake and improved flower quality of some species, but it also increased nutrient leaching and decreased uptake efficiency ( Bi and Scagel, 2008 ; Bi et al., 2007 ; Chang et al., 2012

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Three factorial experiments with various combinations of N, P or K were conducted over 3 years with Schlumbergera truncata (Haw.) Moran. Blooming was influenced by fertilization. Number of blooms was reduced by both low and high fertilization. Nitrogen appeared to be the most influential element, with high levels decreasing time to bloom and number of blooms. Potassium had no effect, and an increase in phosphorus decreased time to bloom and number of blooms.

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-available nutrients contained within the biochar can provide fertilization benefits ( Chan and Xu, 2009 ), particularly low-temperature-derived biochars (less than 550 °C) that favor the retention of C, nitrogen (N), potassium (K), and S and tend to retain the

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appearance of flowering ornamentals. Silicon fertilization enhanced shoot number, flower number, and dry weight by 25%, 62%, and 66%, respectively, over controls for paper daisies ( Helichrysum adenohorum ) ( Muir et al., 1999 ). Thicker flower stems and a

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( Cardarelli et al., 2010 ). Nutrient concentrations of 100 to 150 ppm N are now quite common in commercial bedding plant production. An additional benefit of reduced fertilization rates is the reduction in plant growth rates, which means that the amount of

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, method, time, and place of application necessary for a maximum increase in growth and development ( van Iersel et al., 1998 ). Therefore, the establishment of an optimal irrigation and fertilization program is of great significance for gesnariad

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of horticultural crops to design fertilization programs to achieve high yields ( Snyder, 1998 ). Tissue analysis complements soil analysis by reflecting the amounts of nutrients present in the soil that were actually taken up by the root system and

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Fertilization requirements for palms growing in mineral soils differ greatly from those growing in largely organic container substrates ( Broschat, 2009 ). Pine bark is a common component of container substrates in southeastern United States, but

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both important, the most critical parameter for pollination is the number of pollen tubes reaching the base of the style and fertilizing the egg cell. Temperature ( Petropoulou and Alston 1998 ; Yoder et al., 2009 ) and pollinizer selection

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Seventeen plant bed fertilizer treatments including different rates of N, P, and K were evaluated for the effect on plant production and sweetpotato yield. `Beauregard' storage roots were bedded. Treatments were 0, 40, 80 lb N/ac; 0, 80, 160 lb P/ac; or 0, 75, 150, and 300 lb K/ac. Each nutrient was evaluated in a separate trial. After the first cutting, half of the N treatments and all P and K treatments had 40 lb N/ac top-dressed on the beds. For the first cutting the high rate of N (80 lb/ac) had a higher green weight than the low rate of 0 lb/ac. There wer no other differences found in the first or second cuttings for plant production or yield. Plant bed fertilization also had no effect on transplant survival.

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