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- Title
Adubação potássica em plantas de rúcula: produção e eficiência no uso da água.
- Authors
Andrade Porto, Rebeca de; Bonfim-Silva, Edna Maria; Matos Souza, Débora Santana de; Mendez Cordova, Norman Ruddel; Polyzel, Analy Castilho; Da Silva, Tonny José Araújo
- Abstract
The rocket (Euruca sativa) is an important vegetable in human's feed and one of the most nutritious, rich in minerals such as potassium, sulfur and iron, and vitamins A and C. Since the late 90's the rocket is gaining more market, with an increase in quantity sold, and its area planted. The aim for this study is to assess the effect of potassium on the yield characteristics, SPAD reading and efficiency in water use by plants of rocket. The experiment was conducted in a greenhouse during May-June 2011. The experimental plot consisted of vase built by PET 2.5 liter bottle with a capacity of 1 dm-3of soil, using a wool wick for irrigation by capillary. The experimental design was completely randomized and its treatments consisted of six doses of K2O: 0; 50; 100; 150; 200 and 250 mg dm-3and using as source KCl and six replications. The variables analyzed were SPAD readings, leaf number, fresh mass, dry mass, root dry mass and water use efficiency. The potassium fertilization increases the SPAD reading and water use efficiency by rocket plants in potassium doses of 156.4 and 200 mg dm-3, respectively. Variables fresh and dry mass of plants are influenced by potassium fertilization with adjust of linear regression model. Variables number of leaves and root dry weight are not influenced by potassium fertilization
- Subjects
POTASSIUM; WATER use; MINERALS; SULFUR; IRON; GREENHOUSES; PLANT fertilization
- Publication
Revista Agro@mbiente On-line, 2013, Vol 7, Issue 1, p28
- ISSN
1982-8470
- Publication type
Article
- DOI
10.18227/1982-8470ragro.v7i1.760