Pengaruh Kedalaman Pengolahan Tanah dan Pemberian Pupuk Urea, SP-36 dan KCL terhadap Pertumbuhan dan Produksi Jagung Hibrida Varietas P 35

Abstract

Increasing corn production can be done by intensifying agriculture through the application of good cultivation techniques ( soil processing) and appropriate fertilization. This research aims to see the effect of tilling the soil and applying NPK fertilizer on the growth and production of hybrid corn plants (Zea mays L.). The research was carried out on Sembada XI Street, Padang Bulan Selayang II, Subdistrict Medan Selayang, Medan City, North Sumatra with the coordinates of the research location (3°32'36.7”N 98°38'10.6''E ") at an altitude of 37 meters above sea level from May to August 2023. The research used two treatment factors, namely depth of soil cultivation and levels: 0, 10, 20, 30 cm. The second factor is the application of Urea, SP-36 and KCl with levels: PO = 0 kg/ha P 1 = ( 150 Urea + 100 SP-36 + 75 KCl) kg/ha; P2 = (300 Urea + 200 SP-36 + 150 KCl) kg/ha ; P3 = (450 Urea + 300 SP-36 + 225 KC!) kg/ha. The objective of this result show tliat the depth of soil processing has a significant effect on plant height, stem diameter, flowering age, seed weight by plant, seed production by plot. The treatment of Urea, SP-36 and KClfertilizer had a significant effect on plant height, stem diameter, cob length, cob diameter, crown wet weight, cob weight by plant, weight of 100 seeds, seed weight by plant, seed production by plot.