Fusarium Wilt of Chrysanthemum: Effect of Nitrogen Source and Lime on Disease Development

Bio-organic Fertilizer Promotes Plant Growth and Yield and Improves Soil Microbial Community in Continuous Monoculture System of Chrysanthemum morifolium cv. Chuju

“…oxysporum, one of the most ubiquitous genera, is pathogenic to a wide range of plants such as cucumber (Zhou and Wu, 2012), corn and bean (Okoth and Siameto, 2010), and white lupin (Mohamed et al, 2012). F. oxysporum has also been demonstrated to cause fusarium wilt of chrysanthemum (Woltz and Engelhar, 1973).…”

Soil health indicators and Fusarium wilt suppression in organically and conventionally managed greenhouse soils

“…This difference is probably due to the extremely high levels of organic amendments recommended for organic tomato production in Dutch greenhouses, where tomatoes are harvested from May to December and yields can reach 300-500 metric tons/ha (Gravel et al, 2010). High levels of easily available nitrogen sources, especially nitrate, are generally not associated with soil health , and have sometimes been associated with high susceptibility to Fusarium wilt (Woltz and Engelhard, 1973). However, despite the high concentration of nitrate in the organically managed soil, disease progress of flax wilt was slower and reached lower maximum levels in this soil than in the conventionally managed soil, indicating that suppression of Fol by the microbial community outweighed a potential increase in susceptibility of the flax plants by high nitrate concentrations in the organically managed soil.…”

“…residues (1%) was added to the organically managed soil, the nitrate concentration became apparently so high (1.5 times as high as in the non-amended soil) that the flax plants became very susceptible to Fol. (Woltz and Engelhard, 1973). Moreover, easily available carbon sources likely increased temporarily (Zelenev et al, 2005a(Zelenev et al, , 2006, so that these may not have limited infection by Fol, as inoculation with the pathogen took place right after incorporation of the grass-clover residues in this one experiment.…”

Sowing, field size, and soil characteristics affect bean-Fusarium-wilt pathosystems

“…Peng et al (1999) reported the greatest disease severity of Fusarium wilt of banana at pH 8. The severity of Fusarium wilt of chrysanthemum generally decreased with increasing soil pH from 4.9 to 7.3 through liming of potted soil (Woltz & Engelhar 1973). One explanation was that a lower disease was due to the domination of beneficial bacteria in the root rhizosphere at a higher pH.…”

“…Earlier reports evidenced that bean-Fusarium-root-rot pathosystems were affected by bean market class, crop planted before bean, date and depth of sowing, irrigation frequency, plant and weed density, urea usage, and soil factors such as pH, organic matter, rhizobial nodulation, texture, and fungicide-treatment of field soil (Naseri & Marefat 2011, Naseri 2014. For Fusarium wilt disease, effects of sowing date and cultivar in chickpeas (Navas-Cortés et al 1998), nitrogen fertilizer and soil pH in chrysanthemum (Woltz & Engelhar 1973), reservoir and non-reservoir hosts in beans (Dhingra & Coelho Netto 2001), and trifluraline in soybeans (Carson et al 1991) have been reported previously. However, results on agrosystem-bean-wilt-soil interactions are scarce.…”