BAND SPRAYING, SELECTIVE FLAME WEEDING AND HOEING IN LATE WHITE CABBAGE PART II

The effect on weeds and the crop of band spraying with propachlor and selective weed flaming in the rows, as influenced by different plant spacing, cultivars and hoeing equipment were investigated in three field trials in late white cabbage.
In plots of the vigorous growing cultivar ‘Erdeno’, weight and number of weeds were significantly lower than in the cultivars ‘Apex’ and ‘Bartolo’. Independent of the cultivars, the weight of weed increased when plant spacing within rows increased from 30 to 50 cm.
When 5.0 kg propachlor ha^-1 was applied just after transplanting and 2.5 kg ha^-1 was applied 3–4 weeks later, better weed control was achieved than with one application.
Propachlor applied twice was a completely selective treatment.

Two selective flame weedings in the row with 50 kg propane ha^-1 gave as good weed control as two applications of propachlor and caused no injury on the cabbage. Chenopodium album and Fumaria offisinalis are sensitive to this treatment. Chamomilla suavéolens and Capcella bursa–pastoris are more tolerant species.
Compared to propachlor applied twice, flame weeding had less effect on Senecio vulgaris and an equal effect on Viola arvensis. The application of a higher propane dose the second time did not improve weed control.

The share hoe, brush rotary hoe and knife rotary hoe did not differently influence the weeds in the rows.
No differences in weed control were recorded between the rows after two treatments with the share hoe, knife rotary hoe or the flame weeder.

Symposium on Engineering as a Tool to reduce Pesticide Consumption and Operator Hazards in Horticulture

J. Netland, G. Balvoll, R. Holmøy

Brassica oleracea L. var. capitata L., cultivars, plant spacing, competition, weed control, propachlor, yield

https://doi.org/10.17660/ActaHortic.1994.372.27