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mustard seed meal (Gies Organic Products, Moses Lake, WA). This meal is a by-product of oil extraction from seeds. Application rates, methods, and dates for treatments in each of the four trials are listed in Table 1 . Table 1. Treatment list for

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radish production system in southern China. According to Yuan et al. (2014) , the optimal N application rate recommended in radish-producing area was 120 kg N/ha, but rates of 200–300 kg N/ha are common in southern China. Excessive N fertilizer

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. Application dates are presented in Table 1 . Herbicide rates were selected from label recommendations for bermudagrass and the simazine treatment was chosen based on the high label rate ( Dupont, 2004 ; Monsanto, 2008 ; Syngenta, 2008 ). A broadcast

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Doohan conducted trials with clopyralid application rates ranging from 25 to 400 g·ha −1 applied as a postharvest spray in a perennial strawberry production system. Common groundsel ( Senecio vulgaris ) control of 82% was achieved when clopyralid was

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impacts of ACT on examined tree growth. These studies have rarely compared ACT with water, which is known to be a major limiting factor for tree growth (e.g., Scharenbroch et al., 2011 ). Furthermore, no standards exist for application rates of ACT to

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fertilization and irrigation strategies nurseries can follow to prevent environmental contamination. In addition to reducing the potential for N pollution, lower N applications may reduce the incidence of plant disease. Under some conditions, high N rates have

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May 2016 and 25 Apr. 2017. For the nitrogen applications, different nitrogen rates, including 1) 90 kg·ha −1 N (control), 2) 120 kg·ha −1 N, 3) 150 kg·ha −1 N, and 4) 180 kg·ha −1 N, were applied as a special compound fertilizer for flue

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fertilizer application was ended at FT-1 (1 Sept. 2005) than when it was applied for an additional 30 or 60 days (two leaves; Fig. 2 ). Plants had a similar number of leaves remaining at each of the N rates from 50 to 400 mg·L −1 regardless of N termination

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salts produced more turf injury than calcium chloride (CaCl 2 ), potassium chloride (KCl), urea/CaCl 2 (30%/70%), or NaCl/KCl (50%/50%) following applications of equal rates. After evaluating spring survival levels of 75 cool-season turfgrass cultivars

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. Increasing N application rate influences plant growth ( Bi et al., 2007 ), leaf CO 2 assimilation ( Cheng and Xia, 2004 ), and uptake and allocation of other nutrients ( Scagel et al., 2008 , 2012 ). However, excessive N fertilizer application results in

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