ISHS Acta Horticulturae 109: III International Symposium on Flower Bulbs
CHEMICAL WEED CONTROL IN THE GROWING OF GLADIOLUS MINIBULBS (CORMELS) |
| Authors: | N.A. Fetvadjieva, M.S. Dinova |
| Abstract:
The results of a field microtrial that was carried out in each of three consecutive years and a greenhouse experiment showed that a high herbicide effect against the main annual weeds: Amaranthus retroflexus L., Stellaria media L., Chenopodium album L., Portulaca oleracea L., Echinochloa crus galli (L.) R. et S. and Sinapis arvensis L. has been produced with the mixture napropamide + lenacil at rates of 2.00 kg resp., 0.80 kg/ha a.i., followed by the mixtures of alachlor, 2.00 kg/ha a.i. with lenacil, 0.80 kg/ha a.i. or: metobromuron, 0.50 kg/ha a.i.; pyrazon, 3.20 kg/ha a.i. At secondary weediness with Galinsoga parviflora Cav. it is necessary to treat also during the growing period with phenmedipham at 1.00 kg/ha a.i. The use of napropamide + lenacil or some of the mentioned mixtures of alachlor makes it possible to reduce the number of manual hoeings within the row to 1–2 at the presence of resistant weeds and soil crust. Both growth and reproductive capacity of the minibulbs do not practically differ from those of the untreated control with which up to 5–6 intrrow hoeings have been carried out. Bulbs obtained from treated areas grow and flower normally | |
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