Contribuição Dos Atributos Químicos Do Solo No Desenvolvimento Vegetativo Do Paricá Em Diferentes Sistemas De Cultivo

Abstract

RESUMOObjetivou-se avaliar alguns componentes químicos de um Latossolo e a relação com o desenvolvimento vegetativo do paricá [Schizolobium amazonicum (Huber ex Ducke)] em diferentes sistemas de cultivo em áreas de reflorestamento no município de Tailândia, nordeste paraense. Foram avaliados os sistemas PP [paricá x puerária (Pueraria phaseoloides)], PA [paricá x acácia (Acacia mangium)] e P (paricá monocultivo) conduzidos em 5 anos pela empresa G.M. Sufredini Industrial Ltda. e coletadas amostras de solos na profundidade de 0-20 cm para análise de pH, C e N totais, H+Al, P disponível, Ca, Mg, K e Al trocáveis e calculados os valores de C/N, SB, T, V e m. O desenvolvimento vegetativo do paricá foi avaliado pela sobrevivência, mortalidade e no número de plantas defeituosas além do DAP. Os resultados mostraram que houve o aumento no teor de nitrogênio do solo no tratamento PP; a baixa fertilidade do solo no tratamento PA, mas onde o paricá obteve a maior média em diâmetro (DAP = 16,64 cm) e a maior taxa de sobrevivência no tratamento P (90,63%). Conclui-se que a relação solo-planta nos sistemas paricá e puerária e paricá em monocultivo contribuiu para o estabelecimento dos indivíduos de paricá. Palavras-chave: silvicultura; DAP; fertilidade do solo. ABSTRACTThis study aimed to evaluate some chemical components of an Oxisol and the relationship with the vegetative development of paricá [Schizolobium amazonicum (Huber ex Ducke)] in different cropping systems in reforestation areas in the municipality of Tailandia, northeast paraense. Evaluated the PP [paricá x pueraria (Pueraria phaseoloides)], PA [paricá x acacia (Acacia mangium)] and P (monoculture paricá) systems conducted in 5 years by the company G.M. Sufredini Industrial LTDA and collected soil samples at a depth of 0-20 cm for analysis of pH, total C and N, H + Al, available P, exchangeable Ca, Mg, K and Al and calculated values of C/N, SB, T, V and m. The vegetative development of paricá was assessed by survival, mortality and the number of defective plants beyond the DBH. The results showed that the increase in nitrogen content of the soil in PP treatment, the low soil fertility in PA treatment, but where paricá achieved the highest average in diameter (DBH = 16.64 cm) and greater survival rate in P treatment (90.63%). It was concluded that the soil-plant relationship in paricá and pueraria systems and monoculture

Intercropping with Tropaeolum majus and fertilization with chicken manure on yield of Allophylus edulis

“…According to the classification by Raij (2017), the P content in the soil found in this study is considered high (> 41 mmol c dm -3 ). These results corroborate the study of Rodrigues et al (2016) who evaluated the intercropping of Acacia mangium Willd., native to Brazil, with Pueraria phaseoloides (Roxb.) Benth, forage Fabaceae, and reported improvement of soil chemical attributes.…”

“…The treatment intercropping without chicken manure resulted in greater foliar P content in vacum plants, probably because it is an undemanding native species adapted to use P more efficiently. The concentration of P in the soil solution is low which is considered a limiting factor to more demanding plants, like nasturtium, due to the strong adsorption to iron oxides and aluminum from the clay fraction (Rodrigues et al, 2016;Raij, 2017). P stimulates root growth and enhances reproductive growth, as it is a constituent of the cytoplasmic and nuclear proteins and has important role in the carbohydrates metabolism and energy transfers (Taiz et al, 2017).…”

Qualidade de povoamentos de Mogno africano na Amazônia Oriental

“…Como a área M2 recebeu o plantio de milho na fase inicial, em consórcios ocorre um aumento de N no solo em detrimento do monocultivo, proporcionado pelo aumento e ciclagem da matéria orgânica do solo (Rodrigues et al, 2016) (Bottega et al, 2013).…”

Schizolobium parahyba var. amazonicum seedling growth by Trichoderma spp. strains under nitrogen rates

“…amazonicum (Huber ex Ducke), a legume from the Fabaceae family and native to the Amazon region, easily adapts in Brazil. It grows fast and tolerates low fertility and highly acidic soils, performing better under fertilization (Rodrigues et al 2016).…”