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Valérie Gravel, Claudine Ménard and Martine Dorais

as geranium. In addition to the potential environmental benefits attached to the use of organic amendments, organic fertilization could also be viewed as a preventive method to control soilborne plant pathogens ( Hoitink and Fahy, 1986 ; Raviv, 2008

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Ritu Dhir, Richard L. Harkess and Guihong Bi

High temperatures are a major factor limiting plant growth ( Bibi et al., 2008 ; Xu and Huang, 2008 ; Zhao et al., 2007 ). Ivy geranium grows poorly in the heat of southeastern U.S. summers. Optimum temperature for growth of ivy geranium is 20 to

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Ritu Dhir, Richard L. Harkess and Guihong Bi

Ivy geranium ( Pelargonium peltatum L.) is an important floriculture crop but it does not tolerate the high temperatures of southeastern U.S. summers. Under heat stress, the newly developing leaves of ivy geranium are partially or completely white

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Neo Edwin Nyakane, Moosa Mahmood Sedibe and Elisha Markus

nutrition for optimum growth of the plant. Rose geranium responds well to nutrient application, but the response varies with time and the growth stage of the application ( Alveiro et al., 2017 ; Araya, 2012 ). In addition, if the crop requirements are not

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Yun-wen Wang, Bruce L. Dunn, Daryl B. Arnall and Pei-sheng Mao

Geraniums ( Pelargonium spp.) are an important crop for the U.S. bedding plant industry with a wholesale value of over $100 million in 2010 for both seed and vegetatively produced plants ( U.S. Department of Agriculture, 2010 ). Geraniums are

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Medani Omer, James C. Locke and Jonathan M. Frantz

The U.S. Department of Agriculture (USDA) estimated that 185 million geraniums were produced in 2000 with a total wholesale value of $250 million ( USDA, 2003 ). Geraniums are susceptible to pathogens [e.g., water molds ( Pythium and Phytophthora

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David J. Norman and Jianjun Chen

geranium ( Pelargonium × hortorum ) is considered to be the most serious problem limiting geranium production ( Nameth et al., 1999 ). Bacteria initially enter plants through stomates, pores, or small wounds on leaf surfaces. Symptoms of this disease may

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Yun-wen Wang, Bruce L. Dunn and Daryl B. Arnall

Geraniums ( Pelargonium spp.) are considered one of the most valuable potted plants produced in the United States with an estimated wholesale value of over $100 million in 2010 for both seed and vegetatively produced plants ( U.S. Department of

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Nathan J. Jahnke, John M. Dole and H. David Shew

photosynthesis rates, low carbohydrate reserves, and physical damage ( Arteca et al., 1996 ; Faust et al., 2011 ). The geranium is one of the most important floriculture crops in the United States, but it is susceptible to a variety of postharvest problems

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Bahlebi K. Eiasu, Ntombekhaya Matafeni, Viwe Dyafta and Kenias Chigwaya

Rose-scented geranium ( Pelargonium spp.) is a perennial herb that belongs to the Geraniaceae family ( Eiasu et al., 2007 ; Rajeswara Rao et al., 1996 ). It is cultivated mainly for its high-value essential oil that is used in the perfumery