Proceedings of the Fifth Asian Regional Maize Workshop - Search ...
Proceedings of the Fifth Asian Regional Maize Workshop - Search ...
Proceedings of the Fifth Asian Regional Maize Workshop - Search ...
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Table 6. Average yields for tillage experiment in MARDI (1992).<br />
Treatment .1/<br />
Mean yield (t/ha)<br />
DP+DP+R<br />
OO+DP+DH<br />
MP+DP+R<br />
MP+DP+DH<br />
DP + R<br />
DP+DH<br />
OM + R<br />
MP+DH<br />
3 tillage<br />
operations<br />
2 ti 11age<br />
operations<br />
5.28<br />
5.19<br />
5.89<br />
5.31<br />
6.23<br />
5.93<br />
5.91<br />
5.38<br />
S.E<br />
YDP<br />
= 1.1555<br />
= disc plough; DH = disc harrow; R = rotovation; MP = mouldboard plough.<br />
Table 7.<br />
Marketed yields from various corn pilot projects 1986-1991 (t/ha).<br />
Season<br />
2<br />
3<br />
4<br />
5<br />
MARDI seberang Perai<br />
Pdg Tembusu<br />
United Plantation<br />
Ladang Lambor<br />
2.58<br />
3.50<br />
3.99<br />
2.60<br />
1.36<br />
2.84<br />
2.50<br />
3.99<br />
2.96<br />
2.54<br />
3.20<br />
3.10<br />
3.70<br />
First season<br />
- one round disc ploughing followed by one round <strong>of</strong> rotovation<br />
mechanized simultaneous planting and basal fertilization<br />
mechanized spraying <strong>of</strong> preemergent atrazine at 3 It/ha<br />
monitoring <strong>of</strong> pests through IPM<br />
mechanized harvesting with combine harvester<br />
grain drying to 12-15% moisture content within 48 hr <strong>of</strong> harvest<br />
one round disc ploughing<br />
second season<br />
same as above but with <strong>the</strong> added operation <strong>of</strong> planting mungbean after harvesting <strong>of</strong> corn as<br />
green manure.<br />
C. COnclusions<br />
Priority in grain corn research in Malaysia is given to breeding, particularly in <strong>the</strong><br />
development <strong>of</strong> inbred lines for hybrid formation. For grain corn to be competitive with<br />
o<strong>the</strong>r commodities, <strong>the</strong> yield needs to be increased to a high and consistent level. Present<br />
research in breeding is targeted towards that objective. once <strong>the</strong> relevant cultivars have been<br />
identified, fur<strong>the</strong>r yield increases can be effected through research in <strong>the</strong> agronomic aspects <strong>of</strong><br />
production, as well as in reduction <strong>of</strong> losses through IPM and efficient postharvest handling<br />
75
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