The research was done experimentaly which used completely the randomized
design, and the design of treatment is the age of harvest that consist of 6 times of
harvest, there are the age 55 days, the age 60 days, 65 days, 70 days, 75 days, and the
age 80 days, of harvest. The parametre that observed are the amount of leafs, the
length of cob, the weight of cob leavy, the weight cob without leaf, the seed sugar
content, and the content of seed moisturizer. The result of this research shown that
the different of age harvest really influence for all the parametre determine. And the age
harvest that gives the highest sweet corn seed sugar content is 70 days after planting.
Key words : Zea mays saccharata, the age harvest, seed sugar content.