Science Target Conference Systems, Ajman 4th International Environment Conference 2016

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Performance of carrot (Daucus carota L.) under solid wastes based compost and urea application in Jordan
TAREK ammari, taleb abuzahra

Last modified: 2015-09-12


A study was conducted at Al-Balqa` Applied University Research Station during the 2012 growing season. Fermented plant plus home organic solid waste-based compost `SWC` were used alone and in combination with urea as sources of fertilizer treatments. Nine different proportions of fertilizer treatments were used in the experiment which included 0, 30 and 50 t ha-1 of `SWC` combined with three rates of urea (0, 0.1 and 0.3 t ha-1). The field experiment was laid out in a randomized complete block design with three replications. Yield and quality of carrot exhibited a significant response to an increase in application of single and combined `SWC` and urea treatments. Application of 30 t ha-1 `SWC` + 0.3  t ha-1 urea and 50 t ha-1 `SWC` + 0 urea increased carrot yield by 40% compared with the control treatment. Combined application of 30 t ha-1 `SWC` + 0.3 t ha-1 urea and 50 t ha-1 `SWC` alone resulted in maximum carrot yield. Nitrogen, P, and K soil contents at the end of the research were 185%, 157% and 119%, respectively, of the pre-planting levels in plots where 50 t ha-1 `SWC` + 0.3 t ha-1 t/ ha  urea fertilizer was used.

Key words: Daucus carota, organic-urea fertilizers, fruit quality.