Growth and Yield Responses of Male F1 Variety of Purple Sticky Corn (Zea mays L. var ceratina) Due to the Combination of Plant Population and Organic Fertilizer Dosage

Abstract

The research aims to determine the effect of different combinations of plant population and organic fertilizer dosages on the growth and yield of the best male F1 variety of purple sticky corn. The experiment was conducted in Sukamelang village, Subang sub-district, Subang district, at an altitude of approximately 100 meters above sea level from February 2021 to April 2021. This experiment used a complete randomized block design consisting of six treatments and repeated four times. The treatments consisted of: A. (66.666 plants/ha with 5 ton/ha); B. (66.666 plants/ha with 10 ton/ha); C (53.333 plants/ha with 5 ton/ha); D (53.333 plants/ha with 10 ton/ha); E (40.000 plants/ha with 5 ton/ha); F (40.000 plants/ha with 10 ton/ha). The observed plant responses consisted of: plant height (at 14, 21, and 28 days after planting), leaf area (at 14, 21, and 28 days after planting), plant dry weight, weight of cobs with husk per plant, weight of cobs without husk per plant, cob length, and cob diameter. The results of this study showed that different combinations of plant population and organic fertilizer dosages had an effect on the plant height at 14 days after planting, plant height at 21 days after planting, leaf area at 21 days after planting, plant dry weight, weight of cobs with husk per plant, weight of cobs without husk per plant, cob length, and cob diameter of male F1 Jantan variety of purple sticky corn. The combination of 40,000 plants/ha plant population with 5 tons/ha of organic fertilizer gave the best yield for male F1 Jantan variety of Pulut Ungu corn plants.