A produção de mudas com altos padrões de qualidade requer substratos que disponibilizem características químicas e físicas propícias para tal finalidade. Com isso, objetivou-se avaliar substratos alternativos na produção de mudas de pimentas e pimentões. Comparou-se os seguintes compostos: substrato comercial (Carolina Soil ® ), areia lavada + casca de arroz carbonizada + esterco bovino (1:1:1 v/v/v), areia lavada + casca de arroz carbonizada + húmus de minhoca (1:1:1 v/v/v), Carolina Soil ® + casca de arroz carbonizada + esterco bovino (1:1:1 v/v/v) e Carolina Soil ® + casca de arroz carbonizada + húmus de minhoca (1:1:1 v/v/v). Foram conduzidos dois experimentos simultaneamente, ambos realizados em delineamento de blocos com os tratamentos ao acaso. O primeiro em esquema fatorial cinco (substratos) x dois (cultivares de pimenta), com quatro repetições; e o segundo experimento em esquema fatorial cinco (substratos) x três (cultivares de pimentão), com quatro repetições. Foram avaliadas o índice de velocidade de emergência, porcentagem de emergência, altura de parte aérea, diâmetro de colo, número de folhas e massas frescas e secas da parte aérea, raiz e total. Com base nas características avaliadas, o substrato comercial Carolina Soil ® foi o mais adequado para a produção de mudas de pimenta e pimentão. Como substrato alternativo, recomenda-se o substrato composto por substrato comercial + casca de arroz + esterco bovino. Palavras-chave: Capsicum spp.; Capsicum annum; adubação; matéria orgânica.
Barueiro (Dipteryx alata Vog.) is one of the species native to the Brazilian cerrado that has economic potential. Thus, for the implantation of commercial orchards of this fruit tree, it is important to produce quality seedlings. This study aimed to evaluate the growth of barueiro seedlings under different substrates containing organic residues in the municipality of Nova Xavantina-MT. The experimental design used was randomized blocks (RBD), with 7 treatments (soil (control); soil + bovine manure (2: 1); soil + coffee husk (3: 1); soil + humus (2: 1); soil + coffee husk + humus (3: 1: 1); soil + coffee husk + bovine manure (3: 1: 1); and soil + humus + bovine manure (3: 1: 1)) and 4 replicates, with ten plants per plot, totaling 280 seedlings. Treatments consisted of substrates formulated with different proportions of soil, bovine manure, coffee husk and earthworm humus. Substrate containing only soil (control) provided greater plant height, stem diameter, number of leaves, number of leaflets, shoot and root fresh and dry mass and Dickson Quality Index. In general, residues tested did not favor the growth parameters evaluated, possibly because barueiro is a species native to the Cerrado, not very demanding in soil fertility. Under the conditions of this work, it is recommended the use of soil in the formulation of substrates to produce barueiro seedlings. The addition of organic matter to the soil had negative effect on seedling development.
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