I - --ii

sites where the diseasc was not severe, it failed completely at locations where
epiphytotlcs occurred. The resistant cultivar ILC 482, however, performed consistantly
well at all sites (Table 2). The ,,can yield of ILC 482 was 113% higher
than that of the Syrian landrace planted in spring. This comparison may have
been exaggerated due to the presence of ascochyta blight in some of the springplanted
crops; which in turn may have been enhanced by a large inoculurn load
originating from adjacent heavily attacked winter-scwn plots. However, the
mean yield of ILC 482 was still nearly double that of the Syrian landrace
considering only those sites where the disease was rated 3 or less in spring. This
trial is being repeated this season on about 30 sites in Syria and the cultivar ILC
482 is also being evaluated in on-farm trials in Jordan and Lebanon.
Table 2
Seed yield and disease rating of cultivars sown during winter and spring
in farmers' fields and Experiment Stations in Syria, 1979/80.
Location 'Y1 DR 2
WINTER SPRING
ILC482 Syt. Local Syr. Local
Y DR Y DR
Izra 1666 ND 1444 ND 793 ND
G.!',:re 1076 I 707 7 666 ND
Ham; 3 3427 ND 3093 ND 3190 ND
A village near Hama 1831 ND 1740 ND 816 ND
Homs 2833 1 1056 ND 1555 3
A village near Homs 2222 ND 1111 ND 1389 ND
Boustan El-Basha 1667 ND 0 9 0 9
Azes 836 2 501 2 401 3
Atareb 2110 1 701 7 477 3
Derkak 712 i 31 9 5 9
Ebben 1039 I 863 3 791 1
Kawkaba 1576 1 809 5 1674 1
Mohambel 1781 2 281 3 264 2
Maret Masrin 1417 1 706 5 1173 5
Breda 2481 ND 146 ND 104 ND
Jinderis 2464 3 0 9 0 9
Kararantoon 1357 ND 1638 ND 1658 ND
Tel Hadya 1971 3 0 9 605 5
Mean 1839 824 865
I. Y = yield (kg/ha).
2. DR = disease rating: 1, no disease; 9, complete kill; ND, no data.
3. The trial at Hama was irrigated and protected by fungicide.
11