Control of white mold of dry beans with foliar sprays in Jerome County, ID, 2004

Strausbaugh, C.A. and Koehn, A.C. (2005) Control of white mold of dry beans with foliar sprays in Jerome County, ID, 2004. Fungicide and Nematode Tests. 60:p. FC075. Available: http://www.plantmanagementnetwork.org/pub/trial/fn...

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Abstract

The experiment was conducted in a commercial sprinkler-irrigated, dry edible bean field, where white mold had been
severe in previous years. The soil type was a medium silt loam (pH 7.8). Three of the treatments received early applications
on the 14 Jul when 6% of the plants had at least one open bloom. Additional materials were applied on 21 Jul when 100%
of the plants had at least one open bloom. Treatments were applied as dilute foliar sprays at 37 gal/A and 40 psi (measured
at the boom) using a nitrogen gas pressurized sprayer with two hollow cone drop nozzles (facing the sides of the plants) per
row. The mean number of plants per 10 ft of row was 34. Experimental units consisted of four rows spaced 22 in. apart
and 25 ft long, and were arranged in a randomized complete block design with four replications. The crop was managed by
the grower according to standard cultural practices. Disease incidence and severity data from two 10-ft-center row
segments per experimental unit were recorded on 3 Sep, after which the same row segments were harvested. Each plant
was placed in one of the following three categories for calculating disease severity: non-infected (NI), plants with pod
infection or upper stem infection only (P), and plants with basal stem infection (B). After drying in burlap bags in the
greenhouse, bean plants were threshed on 16 Sep with a belt thresher. Beans were screened through a 9/64 in. slotted
screen to eliminate debris and culls and weighed to determine yield. Data were analyzed using the general linear models
procedure (Proc GLM) in SAS. Fisher's Protected LSD was used for mean comparisons.
Yields were above average and not significantly different. There was very little disease pressure and therefore we were
unable to establish significant differences for both disease incidence and severity. No phytotoxicity was observed.

Item Type:	Article
NWISRL Publication Number:	1153
Subjects:	Irrigated crops > Bean / dry bean > White mold
Depositing User:	Users 3 not found.
Date Deposited:	07 Mar 2008 18:30
Last Modified:	25 Oct 2016 17:52
Item ID:	1216
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1216