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Com o objetivo de verificar o efeito de doses de fósforo e de zinco no desenvolvimento de mudas de aceroleira ( Malpighia glabra L.), conduziu-se um experimento em casa de vegetação situada no pomar do Departamento de Agricultura da Universidade Federal de Lavras-UFLA. As plântulas, após a emergência em canteiros de areia, foram transplantadas em vasos plásticos contendo 1 kg de solo Latossolo enriquecido com 4 doses de fósforo (0; 150; 300 e 450 mg dm-3 de solo), na forma de superfosfato triplo, e 3 de zinco (0; 5 e 10 mg dm-3 de solo), na forma de sulfato de zinco como substrato. O delineamento experimental utilizado foi o de blocos casualizados, em esquema fatorial 4 x 3, constituído de 2 plantas por parcela, em 4 repetições. Após 100 dias, avaliaram-se a altura das plantas, o diâmetro do caule, o número de folhas, massa seca da parte aérea (folha e caule) e raízes. As mudas apresentaram incremento linear na altura, diâmetro do caule, número de folhas e na massa seca das raízes e parte aérea. A combinação da dosagem de 450 mg de P. dm-3 e 0 mg de Zn.dm-3 proporcionou a obtenção de mudas de melhor padrão e com altura superiores às demais. This work was carried out in order to verify the effect of P, Zn and their interaction on the growth of acerola ( Malpighia glabra L.). The experiment was carried on greenhouse conditions at Lavras Federal University, where seedlings of acerola were planted in pots filled with 1.0 dm³ of Latosol. The seedlings were submitted to four rates of P ( 0.0, 150, 300 and 450 mg.dm-3 of soil) and three rates of Zn (0.0, 5 and 10 mg.dm-3 of soil) obtained from Triple superphosphate and zinc sulphate respectively. After one hundred days the seedlings were harvested and the following parameters were evaluated: plant height, stem girth diameter, dry matter ( root, stem and leaf ) and number of leaves. It was established variance and regression analysis for all parameters indicating a significant effect of P on all variables and no significant effect of Zn on the variables. The results showed that the combination of 450 mg of P.dm-3 and 0 mg of Zn.dm-3 of soil provided seedlings better suitable for planting and higher than the others

Fósforo e zinco no desenvolvimento de mudas de aceroleira