CURRENT VARIETAL PERFORMANCE AND NEW COMMERCIAL LINES

Date Issued:1990-08-08

Abstract

The most outstanding features of recent seasons have been the relatively dry conditions experienced in most areas during growth and boll setting followed by unprecedently wet harvests. The variety scene has also seen major changes. Very little blight has occurred in DP90 as a result of the relatively dry conditions experienced allied to the successful lowering of seed-borne infection by the CSD clean seed program together with growers doing their best to avoid the disease by growing this blight-susceptible variety on clean fallow ground. Meanwhile there has been rapid changeover in the CSIRO varieties with the original Siokra 1-1 being replaced over the last two years by firstly Siokra 1-2 and then this year by the bigger-bolled, high yielding Siokra 1-4. In the same period Sicala 3-1 was replaced by Sicala 3-2. Now, for the coming season, the original big-bolled Sicala type has been replaced by the new small-bolled Sicala 33. In addition to Siokra 1- 4 and Sicala 33 there is the okra leafed Siokra L22 for hotter growing conditions and the normal leaf CS 189 which has performed well in bad Verticillium conditions in the Namoi Valley. Both these two varieties also show potential for dryland growing conditions.

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