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HIGUTI, Andréa Reiko Oliveira; SALATA, Ariane da Cunha; GODOY, Amanda Regina  and  CARDOSO, Antonio Ismael Inácio. Production of squash seedling with different nitrogen and potassium rates. Bragantia [online]. 2010, vol.69, n.2, pp.377-380. ISSN 0006-8705.

The experiment was conducted under controlled condition, in São Manuel (SP). The objective of the present research was to evaluate the production of 'Menina Brasileira' squash seedling grown in coconut fiber substrate with varying availabities of nitrogen and potassium. Nutrients were applied via fertirrigation. The experimental design was in randomized blocks, with 16 treatments in a factorial 4 x 4: four rates of nitrogen (0, 40, 80 and 120 mg L-1 N) as nitrate amonium and four rates of potassium (0, 70, 140 and 210 mg L-1 K2O) as potassium chloride. Four replicates and ten plants per plot were considered in this study. The characteristics evaluated in the seedlings were: fresh and dry mass of shoot and root, height and number of leaves. Potassium availability did not influence the evaluated characteristics. However, there was linear increase for most of characteristics with increasing rates of nitrogen, except for root dry mass.

Keywords : Cucurbita moschata; fertilization; coconut fiber.

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