EVALUATION OF CORN HYBRID TOLERANT TO LOW NITROGEN FERTILIZER
Muhammad Abid, Karlina Syahruddin, Bambang S Priyanto, Muslimin

Indonesia Ministry of agriculture
Indonesia Research and innovation agency

Abstract

Nitrogen is an important element for corn growth which plays an important role in metabolic processes, as a constituent of enzymes, cell nuclei, proteins, and chlorophyll. Nitrogen deficiency can result in stunted growth and development of corn plants. Excessive nitrogen fertilization continuously causes soil problems such as acidic, hard texture, and fewer microorganisms activities in the soil. To maintain good soil quality and also corn can grow optimally in an environment with limited nitrogen elements, it is necessary to use corn varieties that are tolerant to low N fertilization. The aim of this research is to obtain hybrid maize that is tolerant to low N fertilization. The study was carried out at the experimental garden of IP2TP Bajeng, Gowa Regency, South Sulawesi Province starting from June - September 2021 using 69 test hybrid corns with 3 comparison varieties arranged in a 2-factor Nested Design, namely the level of N fertilizer and maize genotype with 2 replications. . The hybrids tested gave different responses to the different levels of N given. Hybrids that showed low N tolerance were AVLN 86-2 X P2, CAL 1471 E x CAL 1427, CML 161 x B 11, AVLN 83-1 X CY, AVLN 86-2 x P6, BISI 18, and NK 7328. AVLN 83-4 X AVLN 122-2, B11 x VL144077, VL1440077 x CML465.E and VL 1016492 x B 11 hybrids were low N sensitive hybrids.

Keywords: sustainability agriculture, corn hybrid, low N tolerance

Topic: Plant breeding and biotechnology