Application of Humic Acid and Mulch Dose on Corn (Zea mays L) Yield

Abstract

This research aims to determine whether there is an interaction between the use of humic acid and mulching on the growth and production of corn plants, the effect of humic acid on the growth and production of corn plants and the effect of the use of mulch or mulching on the growth and production of corn plants. This study used a Randomized Block Design (RAK) with 3 replications in Giripurno Village, Kawedanan District, Magetan Regency. The first factor studied was humic acid (A) consisting of 3 treatments, namely doses of 0 Kg / Hectare, 10 Kg / Hectare, 20 Kg / Hectare and the second factor was mulch (M) consisting of 3 treatments, namely without mulch, plastic mulch, straw mulch. The parameters observed included plant height, stem diameter, number of cobs, weight of wet cobs with husks, weight of wet corn cobs without husks, weight of 1000 grains, number of rows, number of seeds, dry weight without husks, weight of dry husked corn, number of leaves, leaf area. There is interaction with plants on the parameters of yield, namely the weight of wet cobs with husks, weight of 1000 grains, and number of rows because the nutrients in humic acid can provide benefits to the yield of corn plants. The absence of interaction on the parameters of plant height 53 HST, stem diameter, number of cobs, weight of wet cobs without husks, number of seeds, dry weight of whole cobs, weight of dry kernels, number of leaves, leaf area is caused by insufficient dosage and short sample observation time.