Effect of Organic Amendments on Soilborne and Foliar Diseases in Field-Grown Snap Bean and Cucumber

Plant Disease
A G StoneR M Goodman

Abstract

Several paper mills in Wisconsin have programs for spreading paper mill residuals (PMR) on land. A growing number of vegetable farmers recognize the agronomic benefits of PMR applications, but there have been no investigations on the use of PMR for control of vegetable crop diseases. Our objective was to determine the effect of PMR amendments on soilborne and foliar diseases of cucumber and snap bean grown on a sandy soil. Raw PMR, PMR composted without bulking agent (PMRC), or PMR composted with bark (PMRBC) were applied annually in a 3-year rotation of potato, snap bean, and pickling cucumber. Several naturally occurring diseases were evaluated in the field, along with in situ field bioassays. All amendments suppressed cucumber damping-off and Pythium blight and foliar brown spot of snap bean. Both composts reduced the incidence of angular leaf spot in cucumber. In a separate field experiment planted with snap bean for two consecutive years, all amendments reduced common root rot severity in the second year. In a greenhouse experiment, the high rate of PMRBC suppressed anthracnose of snap bean. These results suggest that the application of raw and composted PMR to sandy soils has the potential to control several soilborne and...Continue Reading

Citations

May 9, 2012·Annual Review of Phytopathology·Mark Mazzola, Luisa M Manici
Sep 4, 2015·Pest Management Science·Ariena H C van BruggenMaria R Finckh
Feb 23, 2012·Phytopathology·Dan O ChellemiGreg Church
Sep 1, 2007·Molecular Plant Pathology·Elodie GaulinBernard Dumas
Oct 31, 2013·Phytopathology·Jay Ram LamichhaneLeonardo Varvaro
Jan 25, 2011·Applied and Environmental Microbiology·Andreas WestphalBrian B McSpadden Gardener
May 24, 2015·Annual Review of Phytopathology·Robert P Larkin

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