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Xiaojie Zhao, Guihong Bi, Richard L. Harkess, Jac J. Varco, Tongyin Li, and Eugene K. Blythe

available over an extended season. Nutrient management plays an important role in plant production. Nitrogen is one of the key macronutrients required for plant growth and development. Nitrogen combines with other elements to form amino acids used in

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John C. Majsztrik, Andrew G. Ristvey, David S. Ross, and John D. Lea-Cox

watershed ( Majsztrik and Lea-Cox, 2013 ). The Chesapeake Bay is subject to Environmental Protection Agency–mandated total maximum daily load limits for nitrogen (N), phosphorus (P), and sediment for all 94 watershed segments (by eight-digit hydrologic unit

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Yung-Liang Peng, Fang-Yin Liu, Rong-Show Shen, and Yu-Sen Chang

stem, malabar chestnut is also grown as a bonsai or pseudo bonsai tree. In East Asia, the species is known as the “money tree” and is believed to afford financial fortune and to improve business ( Li et al., 2009 ). Nitrogen is an essential element for

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Hadi Susilo, Ying-Chun Peng, and Yao-Chien Alex Chang

.5-cm pot for 5 months), Stage II (medium plant in 8.5-cm pot, 5 months), and Stage III (large plant in 10.5-cm pot, 5 months). Nitrogen is an important macronutrient that significantly affects the growth and flowering of Phalaenopsis ( Lei, 2007 ; Yu

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Adam D. Karl, Michael G. Brown, Sihui Ma, Ann Sandbrook, Amanda C. Stewart, Lailiang Cheng, Anna Katharine Mansfield, and Gregory M. Peck

attributes of the finished ciders to remain competitive and continue improving the quality of ciders available in the U.S. market. Nitrogen fertilization is a little studied area of cider apple orchard management that potentially impacts productivity, fruit

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Desire Djidonou, Xin Zhao, Karen E. Koch, and Lincoln Zotarelli

For most crop species, nitrogen (N) is an essential plant nutrient with the greatest influence on growth and development because it is a constituent of chlorophyll, amino acids, proteins, nucleic acids, and cell walls ( Fageria, 2009 ). Because N

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Yin-Tung Wang and Yao-Chien Alex Chang

Nitrogen is one of the most essential mineral elements that plants need to grow and reproduce well. Low N can result in slow plant growth, pale-green leaves, abscission of the lower leaves, reduced flower count, and low productivity. Rate of N Lee

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Pascal Nzokou and Bert M. Cregg

utilization in the photosynthetic process by the foliage ( Alam, 1999 ). Nitrogen (N) fertilization and uptake is critical for shoot and root growth. Most N taken up by crops is retained in plant tissues, where it becomes part of the plant structure and is

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Tongyin Li, Guihong Bi, and Richard L. Harkess

). Calculations. Total plant dry weight was calculated by summing dry weights of leaves, stems, and roots of a given plant. Nitrogen content in leaves, stems, or roots was calculated by multiplying tissue N concentration by sample dry weight. Total plant N content

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Yiwei Jiang, Yaoshen Li, Gang Nie, and Huifen Liu

Nitrogen management is an important cultural practice for perennial grass production. An insufficient N supply can weaken plants, but excessive applications of N may also lead to problems of plant health and vigor. The extensive use of N fertilizers