Articles
NEW PRODUCTS TO IMPROVE GROWTH OF FIELD GROWN EASTER LILY BULBS
Article number
900_42
Pages
333 – 337
Language
English
Abstract
Easter lily bulbs for greenhouse forcing are produced in Del Norte County, California and Curry County, Oregon, USA. Lesion nematode, Pratylenchus penetrans, infestation of soil and roots seriously affects growth of field grown bulbs.
During two years of field trials, commercially prepared formulations of several natural products were compared to the control and two commercial standards (1,3-dichloropropene applied preplant followed by fenamiphos at planting [DFE]; and metam-sodium [MS] applied preplant followed by Thimet [TH] at planting [MSTH]) to determine their value in the management of lesion nematode, and in improving plant health.
Products tested included meadowfoam seed meal (MF), mustard bran (MU), Quillaja (QU), DiTera (DT), and the fungi Paecilomyces lilacinus (PL) and Muscodor albus (MA). Trials were statistically evaluated at P=0.05. Natural products were tested either alone, in combination with TH at-planting, at planting following MS or in combination with TH at planting following MS. In a 2004-2005 trial, the commercial standard DFE but not MSTH had a greater bulb circumference than the control.
Nineteen treatments including ones with the natural products DT, QU, PL, MA MU, and MF had a greater circumference than the control and were equivalent to DFE. Twenty-six treatments had a greater foliage weight at harvest than the control and were equivalent to DFE and MSTH. DFE and 10 other treatments, but not MSTH, had greater bulb survival than the control.
TH+MA had a lower level of lesion nematode within roots than the control.
In a 2005-2006 trial, 11 treatments including ones with the natural products DT, QU, PL, MA and MF had a greater bulb circumference than the control and were equivalent to MSTH. MS+PL had lower survival than the control.
Ten treatments, but not MSTH had a greater foliage weight at harvest than the control and were equivalent to DFE. MF and DFE had lower levels of lesion nematode within roots than the control.
The natural product MA when used alone performed similarly to the commercial standards in both trials.
During two years of field trials, commercially prepared formulations of several natural products were compared to the control and two commercial standards (1,3-dichloropropene applied preplant followed by fenamiphos at planting [DFE]; and metam-sodium [MS] applied preplant followed by Thimet [TH] at planting [MSTH]) to determine their value in the management of lesion nematode, and in improving plant health.
Products tested included meadowfoam seed meal (MF), mustard bran (MU), Quillaja (QU), DiTera (DT), and the fungi Paecilomyces lilacinus (PL) and Muscodor albus (MA). Trials were statistically evaluated at P=0.05. Natural products were tested either alone, in combination with TH at-planting, at planting following MS or in combination with TH at planting following MS. In a 2004-2005 trial, the commercial standard DFE but not MSTH had a greater bulb circumference than the control.
Nineteen treatments including ones with the natural products DT, QU, PL, MA MU, and MF had a greater circumference than the control and were equivalent to DFE. Twenty-six treatments had a greater foliage weight at harvest than the control and were equivalent to DFE and MSTH. DFE and 10 other treatments, but not MSTH, had greater bulb survival than the control.
TH+MA had a lower level of lesion nematode within roots than the control.
In a 2005-2006 trial, 11 treatments including ones with the natural products DT, QU, PL, MA and MF had a greater bulb circumference than the control and were equivalent to MSTH. MS+PL had lower survival than the control.
Ten treatments, but not MSTH had a greater foliage weight at harvest than the control and were equivalent to DFE. MF and DFE had lower levels of lesion nematode within roots than the control.
The natural product MA when used alone performed similarly to the commercial standards in both trials.
Publication
Authors
D. Giraud, L.J. Riddle, C.E. Anderson, B.B. Westerdahl
Keywords
lesion nematode, Lilium longiflorum, Pratylenchus penetrans
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