Pengaturan Jarak Tanam dan Defoliasi Daun terhadap Tanaman Jagung Manis (Zea mays var. saccharata Sturt) di Dataran Rendah

Sweet corn (Zea mays var. saccharata Sturt) is one of the most popular commodities. The cultivation technology needs to be done to increase productivity, especially market opportunities and large demand for this commodity. One of the cultivation technologies that can be applied is setting the type of spacing and leaf defoliation. This research was conducted in Juwet village, Porong, Sidoarjo and was carried out in May – July 2022. This study used Factorial RAK with 2 factors, namely the first factor of Plant Spacing with 3 levels J1 (20x40 cm), J2 (20x60 cm) and J3 (20x70 cm). And the second factor is Defoliation under the cob with 3 levels, namely D0 (without defoliation), D1 (Defoliation of 2 leaves), and D2 (Defoliation of 4 leaves). The results showed that 20 x 70 cm and pruning of 4 lower leaves showed a real interaction with yield parameters per plot with a yield of 9.93 kg and yield per hectare of 24.94 tons/ha. Single factor of planting distance of 20 x 70 cm had a noticeable influence on the plant age display parameters of 28 HST, 42 HST and 56 HST of 56.79 cm; 95.07 cm; and 190.13 cm and the number of leaves 42 and 56 HST of 10,04 strands and 12,82 strands.