Corn (Zea mays L.) Yield Characteristics and Oil Content are Influenced by Licorice and Seaweed Extract Spray Frequency

Abstract

A field experiment was done in spring 2022 on one of the farms in Al-Medhatiyah area, south of Babylon Governorate, using the randomized complete block design (RCBD) with three factors: licorice extract at three doses (0, 5, 10) mg L-1 and encoded (L0, L1, L2). (The second factor is spraying seaweed extract on the plants in three doses (0,4,8 mg L-1) and coding (A0, A1, A2). Three sprays (once, twice, and three times) are the third factor. Encoded (N1, N2, N3). Thus, each replication comprised 27 treatments, totaling 81 experimental units. The outcomes were as follows. Licorice extract at 10 mg L-1 (L2) exhibited the highest averages (32.03 grains, row-1) in all investigated features, including number of grains.row-1, weight of 300 grains, protein %, and oil %. 1,53.34g-1,9.82% 4.82%. The seaweed extract at 8 mg L-1 (A2) exhibited the highest averages (34.66 grains, row-1, 5.10%, 10.20%) in all tested aspects. The spraying treatment had the greatest averages (53.86gm-1 5.37%, 10.53%) for the measured properties (weight of 300 grains, 1gm, percentage of oil%, percentage of protein%) three times. The treatments (L2, A2, N3) and concentrations (10 mg L-1 licorice, 8 mg L-1 seaweed, for three sprays) excelled in some of the bi-interactions between licorice, seaweed, licorice, number of sprays, algae, and number of sprays. Including (the number of grains in a row, and the percentage of oil) by giving them the highest averages (30.60, 35.96, 38.94), (5.32, 5.47, 5.57%), while protein percentage was not noteworthy for the season.