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the workshop were to: review work done to
date; exchange information, experiences, ideas
and methodologies; discuss problems encountered
and research in progress; and pave
the way for organized cooperative activities in
the future.
This workshop was sponsored jointly by
the Indian Council of Agricultural Research
CIMMYT, and by Uttar Pradesh Agricultural
University (UPAU), which served as host, September
21-25, 1969. Fifty-seven participants
were present from ten countries: India, USA,
Taiwan, Philippines, Indonesia, Israel, Mexico,
Nigeria, Uganda and Thailand. Twenty-four
papers and two special addresses were presented,
and three round table discussions
were held. The last session was devoted to
planning future organized activities, and decisions
were made to:
(1) issue a "Downy Mildew Newsletter" to
enable this group and other interested individuals
to maintain contact and exchange information.
(2) prepare a complete bibliography
of the Downy Mildew Diseases of Gramineae.
(3) seek finances for a duplication and reprinting
service when the bibliography is complete.
(4) establish a list of common names for each
of the pathogen species. (5) form a taxonomical
committee to help researchers identify the
causal species of the Downy Mildew Diseases
encountered in various geographical areas.
(6) establish a uniform disease rating system.
(7) continue to enlarge the international mildew
resistant nursery of maize and sorghum.
(plantings, of either one or both nurseries, were
planned at 24 locations around the world during
1970.) (8) conduct an international cooperative
fungicide trial at eight locations during
1970 in which candidate chemicals would be
selected for application' to the seed, soil and
foliage. (9) meet again after two to three years
at a formal symposium on the downy mildew
diseases of Gramineae. (See: Indian Phytopathology,
Vol. XIII 2, 1970.
The 1968 Workshop in Thailand had initiated
a uniform yield trial to be conducted in
1969. Twenty-eight varieties and hybrids
from eight countries were tested in 13
countries. Because of differences in type of
entries, three separate yield trials were developed:
Early Varieties and Hybrids (seven entries,
plus a local check variety); Medium-to­
Late-Maturing Varieties (15 entries), and Medium-to-Late-Maturing
Hybrids (six entries plus
a local check variety).
Grain yield and other agronomic data have
been received from only nine locations in six
countries. Hybrid Ko. No. 7 developed in
Japan was the highest average yielding early
entry at 3848 kgjha over five locations.
The highest yielding medium-to-Iate- variety
was Bogor Composite 2, at 3962 kgjha
averaged over 9 locations and six countries.
This entry was developed in Indonesia.
The highest yielding hybrid in the mediumto-late
maturity trial was Ganga 5, at 4223
kgjha averaged over 8 locations and six
countries. This hybrid was developed in India.
Inter-Asian Corn Improvement
Program Workshop
The Inter-Asian Corn Improvement group
held its Sixth Annual Workshop at Nainital,
India, September 26-29, 1969. The Uttar­
Pradesh Agricultural University hosted the
Workshop, immediately after the Downy Mildew
Workshop. Delegates from 14 countries
participiated in a wide ranging program dealing
with maize improvement and production.
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