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Chad T. Miller, Neil S. Mattson, and William B. Miller

drawbacks to overhead irrigation, particularly hand irrigation, include labor costs and the potential for poor water use efficiency. Another drawback to overhead irrigation is the potential for unsightly mineral residue on foliage from fertilizer

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Jinrong Liu, W. Roland Leatherwood, and Neil S. Mattson

transplant production, with the exception of uniconazole (Sumagic; Valent U.S.A., Walnut Creek, CA) which can only be used for certain vegetables species at seedling age ( Schnelle and Barrett, 2009 ). Therefore, it can be challenging to select a fertilizer

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M. Zhang, M. Nyborg, and S.S. Malhi

This research was supported by Alberta Agriculture Research Institute and the Fertilizer Division of Sherritt. We acknowledge the technical support of Monica Molina-Ayala and Zhixiong Zhang. Use of the controlled/slow-release fertilizers

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Timothy Coolong, Andre Luiz Biscaia Ribeiro da Silva, and Justin Shealey

Southwest Georgia using plastic mulch and drip irrigation. These soils are well drained and subject to nutrient leaching ( Delgado, 2002 ). As a result, N fertilizer recommendations for the Coastal Plain of Georgia call for the application of 150 to 200 lb

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S. Christopher Marble, Jeff L. Sibley, Charles H. Gilliam, and H. Allen Torbert

Historically, poultry wastes have been used as a soil amendment and source of fertilizer in agronomic row cropping systems. Poultry litter (PL) is often preferred over other animal manures as a result of its high nutrient content in comparison with

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Kelly T. Morgan, Kent E. Cushman, and Shinjiro Sato

with limited nutrient retention capacities, it is desirable to increase the number of split applications of N fertilizers to reduce leaching potential or to use products designed to release N over time. Nutrients from slow-release fertilizer (SRF) and

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James E. Altland and James C. Locke

rothschildiana L.) in a 1:1:1 sand:rice husk charcoal:coconut fiber substrate did not respond to varying levels of applied calcium (Ca) fertilizers as a result of high Ca levels in rice husk charcoal. Santiago and Santiago (1989) briefly summarized their work

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John Rojas, Julian Quintero, Yhors Ciro, and Javier Silva

deficiency signs might occur ( Takahashi, 1981 ). Currently, the main trend is to use organic fertilizers for vegetable growth and development. However, the heterogeneity of the physical and chemical characteristics of the different organic fertilizers may

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Timothy K. Broschat

are reduced nitrogen availability ( Billeaud and Zajicek, 1989 ), water repellency ( Gartner, 1978 ), and allelopathy ( Duryea et al., 1999 ; Still et al., 1976 ). One question that is often asked by landscapers is whether fertilizers should be

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David Sotomayor-Ramírez, Miguel Oliveras-Berrocales, and Linda Wessel-Beaver

., 2002 ; Olson et al., 2011 ). In contrast, tropical pumpkin has a deeper root system that would be expected to take up residual soil N. Thus, fertilizer rates for tropical pumpkin are usually lower, in the range of 50 to 75 lb/acre of N in rotation