Land preparation
The first cultivation of the land begins 15 days before planting, ie reversing or plowing the soil, for a week the soil is allowed to repair aeration & drainage of the soil and kill soil organisms that can disrupt the plant. One week later the second treatment is done by leveling the soil and forming a plot of planting with a width of 75-80 cm. Among the plots are made a drain or ditch with a width of 35 cm. In the less fertile soils above the planting plots are dispersed manure 3-5 tons / ha, then stirred evenly.
Planting
Planting is done on the plots that have been formed. At the time of planting, the soil should be moist but not muddy, recommendation spacing 75 cm x 25 cm. The soil was dug at a depth of 2 cm in the rainy season and 4 cm in the dry season. When the optimum land conditions are loose, the aeration and drainage are either used one seed per planting hole, but if less optimum land condition is used 2 seeds per planting hole. To avoid attacks of insects sown carbofuran around the seed. The seeds will germinate 4 - 7 DAP. improve drainage and watering easier.
Fertilization
Description: DAP = Day After Planting, Planting Distance 75 cm x 25 cm, population per ha = 50 000 plants.
Table 1. Type and Dose of Fertilizer for Maize Planting
Age
Type of Fertilizer
Dosage / Plants
15 - 20 HSS
Urea
4 g
SP 36
2 g
Kcl
2 g
40-45 HSS
Urea
2 g
SP 36
2 g
Thinning is done at the age of 2 - 3 weeks after planting. Cultivation can be done at the age of one week after planting. The critical period of crop and weed competition occurs since planting up to one-third or a quarter of its life cycle. The first weeding done at age 15 days after planting and must be maintained so as not to damage or disturb the roots of plants. The second weeding is done at the same time of second fertilization.
Harvesting
Sweet corn crops can be harvested at 95 DAP. Examination can be done by looking directly at the tuna condition or by direct pressing the thumb is usually located on a third of the seeds of maize.
