Produção Nacional
Revisado por pares
Growth and mineral nutrition of Solanum americanum
2010; Sociedade Brasileira da Ciência das Plantas Daninhas; Volume: 28; Issue: 2 Linguagem: Inglês
10.1590/s0100-83582010000200008
ISSN1806-9681
AutoresS. Bianco, Leonardo Bianco de Carvalho, Matheus Saraiva Bianco,
Tópico(s)Banana Cultivation and Research
ResumoA greenhouse trial was carried out from November 1995 to April 1996 at FCAV/UNESP, Brazil, aiming to study the dry matter production and the accumulation and distribution of macronutrients in Solanum americanum, an important weed for annual and perennial crops in Brazil. The plants were grown in seven liter pots with sand substrate, irrigated daily with Hoagland & Arnon nutrient solution. The experimental design was completely randomized with four replicates. The treatments corresponded to evaluation times at 14 day intervals, beginning 21 days after emergence (DAE). In each evaluation, the plants of four pots were analyzed for dry matter production and macronutrient content. S. americanum had a small dry matter and macronutrient accumulation at the beginning of the experimental stage, increasing after 77 DAE and reaching the maximum theoretical value at 142, 142, 164, 149, 140, 149 and 152 DAE, for dry matter, N, P, K, Ca, Mg, and S, respectively. K and N were the most accumulated macronutrients for S. americanum plants.
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