Produção de mudas de abóbora com diferentes doses de nitrogênio e potássio
Carregando...
Data
2010-01-01
Autores
Higuti, Andréa Reiko Oliveira [UNESP]
Salata, Ariane da Cunha [UNESP]
Godoy, Amanda Regina [UNESP]
Cardoso, Antonio Ismael Inácio [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Instituto Agronômico de Campinas
Resumo
O experimento foi desenvolvido em ambiente protegido, em São Manuel (SP). O objetivo deste trabalho foi avaliar a produção de mudas de abóbora 'Menina Brasileira' em substrato à base de fibra de coco com diferentes doses de nitrogênio e potássio em fertirrigação. Utilizou-se o delineamento experimental em blocos ao acaso, com 16 tratamentos em esquema fatorial 4 x 4, sendo quatro doses de nitrogênio (0, 40, 80 e 120 mg L-1 de N) na forma de nitrato de amônio e quatro doses de potássio (0, 70, 140 e 210 mg L-1 de K2O ) na forma de cloreto de potássio, em quatro repetições e dez plantas por parcela. As características avaliadas foram: massa fresca e seca da parte aérea e raiz, altura e número de folhas. As doses de potássio não influenciaram as características avaliadas. Houve, porém, aumento linear para a maioria das características avaliadas com doses crescentes de nitrogênio, exceto para a massa seca da raiz.
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.
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.
Descrição
Palavras-chave
Cucurbita moschata, adubação, fibra de coco, Cucurbita moschata, fertilization, coconut fiber
Como citar
Bragantia. Instituto Agronômico de Campinas, v. 69, n. 2, p. 377-380, 2010.