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Salvatore S. Mangiafico, Julie Newman, Donald J. Merhaut, Jay Gan, Ben Faber, and Laosheng Wu

losses from production nurseries are few, and the results are not always consistent. A survey of container nurseries in the eastern United States found that runoff leaving nurseries exceeded 10 mg·L −1 nitrate–nitrogen (NO 3 –N), although some nurseries

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Lenny Wells

study ( Tables 1 and 2 ). Leaf N was numerically higher for treated and control trees of both cultivars in 2014 than in 2013; however, there were no statistically significant differences. Table 1. Mean leaf nitrogen (N), leaf phosphorus (P), leaf

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André Snyder, Matthew J. Morra, Jodi Johnson-Maynard, and Donald C. Thill

., 1997 ), but no studies have compared BSMs from different species as sources of nitrogen (N) for vegetable crop production. Brassicaceae seed meals contain 5% to 6% N by weight and have C:N ratios of ≈8:1 ( Gale et al., 2006 ), thus potentially serving

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Carolyn F. Scagel, Guihong Bi, Leslie H. Fuchigami, and Richard P. Regan

Corvallis, OR (lat. 45°59′04″ N, long. 123°27′22″ W). Nitrogen treatments. Twenty plants of each cultivar were randomly assigned to one of four groups and fertilized twice a week from 29 Apr. 2005 to 2 Sept. 2005 (N05 rate). During each fertilizer

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Bielinski M. Santos

the same mulch as previously described. During all the seasons, treatments were established in a randomized complete block design with six replications. Experimental units were 12.5 ft long (20 plants per plot). Table 1. Effects of preplant nitrogen (N

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Ellen T. Paparozzi, Jazbaat K. Chahal, Petre Dobrev, Elizabeth A. Claassen, Walter W. Stroup, and Radomira Vankova

(150 mg·L −1 N) ensured regreening of P. parviflorus plants within 3 weeks. The N concentration of plants that received no nitrogen during the experiments were 0.02% ± 0.01%, whereas plants receiving 150 mg·L −1 N ranged from 5.98% to 7

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Gerry Henry Neilsen, Denise Neilsen, and Linda Herbert

nitrogen (N) applied per tree for each fertigation time, 1999 to 2004. Trees were trained to a slender spindle system supported by posts and grown in a 2.0-m-wide herbicide strip maintained by annual glyphosate applications. Insect and disease

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H.T. Kraus, S.L. Warren, G.J. Bjorkquist, A.W. Lowder, C.M. Tchir, and K.N. Walton

variable where the dependent variable equaled zero. Nitrogen:potassium ratio and nitrogen:phosphorus ratio experiments. During Summer 2005, two concurrent but separate 2 × 6 factorial experiments were conducted in a randomized complete block design (RCBD

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Chenping Xu and Beiquan Mou

; Qadir et al., 2008 ). Another important limiting factor for crop production is soil nutrient deficiency. Nitrogen is considered the most common deficient nutrient, followed by P and K ( Halvin et al., 2005 ). Nitrogen is a major constituent of proteins

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Hadi Susilo and Yao-Chien Alex Chang

), which makes it very versatile and adaptable, both during production and post-harvest. Nitrogen is an important macronutrient in plants. The growth and flowering of Phalaenopsis are significantly affected by the N status in the plants ( Lei, 2007 ; Yu