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ADVANTAGES
Both single-cross and three-way-cross hybrids are genetically
superior in terms of yield performance over the existing improved
and traditional corn varieties which are generally low yielder.
YIELD
INCREASE
Using the single-cross hybrids in wet season will increase yield
by 7.18 to 8.56 t/ha while in the dry season by 6.67 to 7.83
t/ha. By planting the three-way cross hybrids, yield will increase
from 6.72 to 7.62 t/ha in the wet season while 7.50 to 8.17 t/ha
in the dry season.
ECONOMIC
BENEFITS
Single-cross hybrids in the wet season will give a Return on
Capital (ROC) of 224 to 275% while in the dry season, from 230-236%.
Using the single-cross hybrids, the ROC varies from 221-246%
in the wet season while in the dry season from 239-255%. Farmer's
variety has an ROC of 3% in the wet season and -14% in the dry
season.
LAND
PREPARATION
Prepare the land thoroughly
by plowing and harrowing twice at two weeks interval. Make furrows
at 75 cm apart and apply basally the recommended amount of fertilizers
based on the result of the laboratory analysis.
PLANTING
Plant at one seed per
hill along the furrows spaced 20 cm apart. Cover the seed with
2-3 cm of fine soil.
WEEDING AND OFF-BARRING
Do spot-handweeding and
thereafter undertake shallow cultivation or off-barring 14-18
days after planting (DAP).
SIDEDRESSING AND HILLING-UP
At 25-30 DAP, sidedress
the plants with the recommended nitrogenous fertilizer. Do hilling-up
to cover the fertilizer and control the remaining weeds.
CONTROL OF CORNBORER
Apply Trichogramma at
the rate of 80 cards/ha at 25-30 DAP. Repeat another application
of 80 cards/ha one week later if more cornborer eggmasses are
observed. Spray any recommended insecticides if cornborer infestations
persist
HARVESTING
Harvest from 95-100 days
after planting or when most of the ears are fully matured.
Source of technology:
Salomes, F.M., S.M. Simbajon, C.A. Acosta and R.N. Ocay. 2005.
Corn Techno-Showcase in support to GMA Corn Production Program
in Region IX. DA-WESMIARC, Sanito, Ipil, Zamboanga Sibugay.
For further information, please contact:
Department of Agriculture
WESTERN MINDANAO INTEGRATED AGRICULTURAL RESEARCH CENTER
Sanito, Ipil, Zamboanga Sibugay
Tel./Fax No. (062)-3332-537 or Tel. No. (062) 3332-537
zambo_da9@yahoo.com
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