PRODUCTIVE PERFORMANCE OF MACAÚBA ACCESSIONS AT THREE TECHNOLOGICAL LEVELS IN THE CERRADO ENVIRONMENT

To make the macaúba cultivation system viable, studies will be needed to adapt production, aiming at yield potential. The objective of this study was to evaluate the performance of macaúba accessions, under different technological levels, in various seasons. Productivity (ton/ha) was evaluated for four cycles between 2014-2019 in accessions in the region of Ituverava (SP) and Planaltina (DF). The experiment was established in Dec/2008, in DBC, with four replications, plots of 3-5 plants, at three technological levels: low, medium and high.  Three-factor analysis of variance with repeated measures in time was used and Tukey's 5% test was applied. The program used was the Jamovi software. For the low level, base fertilization was performed in the pit with 50g of NPK (04-30-16). For the medium level, base fertilization with 300g of NPK, top dressing at 60 and 120 days after planting and, until the 1st year, maintenance fertilization was carried out during the rainy season. From the 6th year onwards, NPK (10-5-15), 3Kg/plant every 30-45 days in the rainy season and 300g of FTE were used. For the high level, in addition to fertilization, irrigation was carried out in a drip system in the dry period until the 4th year. From the 5th year onwards, the system was changed to microsprinklers and irrigation was activated when the level of depletion of the soil's available water capacity (CAD) reached 50%. Water consumption during dry periods in the summer and dry periods in the winter was calculated according to the crop coefficient equal to 1 and evapotranspiration as a reference. There was no significant difference between the accesses