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United States Department of Agriculture

Agricultural Research Service

Title: Field Evaluation of Nematode Control Alternatives for Grapevine Nurseries

Authors
item Schneider, Sally
item Ajwa, Husein - UC DAVIS
item Trout, Thomas
item Sims, J - UC RIVERSIDE

Submitted to: Proceedings of Methyl Bromide Alternatives Conference
Publication Type: Proceedings
Publication Acceptance Date: November 6, 2001
Publication Date: November 6, 2001
Citation: SCHNEIDER, S.M., AJWA, H.A., TROUT, T.J., SIMS, J. FIELD EVALUATION OF NEMATODE CONTROL ALTERNATIVES FOR GRAPEVINE NURSERIES. PROCEEDINGS OF METHYL BROMIDE ALTERNATIVES CONFERENCE. 2002.

Interpretive Summary: The California Code of Regulations makes it "mandatory that nursery stock for farm planting be commercially clean with respect to economically important nematodes." Historically, methyl bromide has been used to meet these regulations. In light of the on-going phaseout of methyl bromide, growers of perennial nursery crops, such as trees and vines, will need alternatives to methyl bromide in order to continue to produce clean planting material and meet CDFA's requirements. Control of the citrus nematode, Tylenchulus semipenetrans, in plots treated with shank-injected and drip-applied iodomethane + chloropicrin, shank-injected and drip-applied propargyl bromide, InLine, chloropicrin, and drip-applied sodium azide was comparable to the control achieved with methyl bromide throughout the soil to a depth of 150 cm at the time of planting. Weed control in plots with shank-injected fumigants and drip-applied treatments with an herbicide cap was comparable to that in methyl bromide treated plots. Several of these treatments hold promise as alternatives to methyl bromide for perennial nursery crops.

Technical Abstract: The California Code of Regulations makes it "mandatory that nursery stock for farm planting be commercially clean with respect to economically important nematodes." Historically, methyl bromide has been used to meet these regulations. In light of the on-going phaseout of methyl bromide, growers of perennial nursery crops, such as trees and vines, will need alternatives to methyl bromide in order to continue to produce clean planting material and meet CDFA's requirements. Control of the citrus nematode, Tylenchulus semipenetrans, in plots treated with shank-injected and drip-applied iodomethane + chloropicrin, shank-injected and drip-applied propargyl bromide, InLine, chloropicrin, and drip-applied sodium azide was comparable to the control achieved with methyl bromide throughout the soil to a depth of 150 cm at the time of planting. Weed control in plots with shank-injected fumigants and drip-applied treatments with an herbicide cap was comparable to that in methyl bromide treated plots. Several of these treatments hold promise as alternatives to methyl bromide for perennial nursery crops.

Last Modified: 11/23/2014
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