Effects of several roots growth media on vegetative growth characteristics of cabage [brassica oleracea (capitata group)‎ l.] and turnip [brassica campestris (rapifera group)‎ l.].

الملخص EN

Two field experiments were conducted to determine the effect of roots growth media on plants growth.

Leafy and root crops were used as an indicators cabbage cv.

“ Brunswick” and turnip cv.

“White Globe Purple Top” were used in the first experiment, while in The second one three turnip cultivars “ Royovska ; Tonda A Coll ; and Rezpa Japalna”.

Results of both experiments indicated that roots growth media were varied in their effects regardless of their water holding capacity.

Crop kind, varietals type; source and decomposition rate of organic matter ; and straw content had significant effects in determination of favorable roots growth media.

However, cabbage plants proved to be a weak indicator due to their insignificant response to the various media.

No significant differences were found between the effect of imported compost and farm yard manure.

Plants grown in straw and straw mix media produced significantly the lowest vegetative growth.

It is worthwhile to mention that straw should be avoided whenever roots growth media required to be prepared, regardless of nitrogen fertilizer supplement.