EFFECT OF MICORRIZATION AND PHOSPHORIC FERTILIZATION ON THE PERFORMANCE OF CORN (Zea mays L.) IN SANDY SOILS OF MONTERÍA

Abstract

The test was carried out in the Corregimiento Buenos Aires, Montería Córdoba whose geographical coordinates are 8 ° 28’15’’N and 75 ° 44’56’O, referring to the Greenwich meridian at 15 meters above sea level. The area belongs to the warm-moderate climate zone, the Tropical Dry Forest (BS-T) formation and the Cj agroecological zone. This study was carried out during the second semester of the year 2018. Corn of the commercial variety (ICA V 109) was planted at 0.5 x 0.8m in a randomized complete block design with a 2x5x3 factorial arrangement, three replications. Performance parameters were evaluated. It was obtained that with the use of mycorrhizae and low doses of phosphorus, the same results are achieved as with high doses and without mycorrhizae. The best dose of P applied to the soil in the presence of mycorrhizae, is that of 50 kg / ha. It is concluded that, with the use of mycorrhizae, the dose of phosphorus can be reduced in the corn crop under edaphoclimatic conditions of Buenos Aires - Montería and the yields are maintained, which contributes to minimizing the contaminating impact by use of phosphorus fertilizers