Open AccessEffect of nitrogen and phosphorus fertilzation and planting dates on growth, flower yield and methoxalen conceration in Calendula officinalis L.
Author(s) -
Affendy Hassan,
R.M. Moter,
N.Kh. Abdl Alazez
Publication year - 2012
Publication title -
maǧallaẗ markaz buḥūṯ al-taqniyyaẗ al-aḥyāʾiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2708-1370
pISSN - 1815-1140
DOI - 10.24126/jobrc.2012.6.1.190
Subject(s) - sowing , calendula officinalis , phosphorus , randomized block design , inflorescence , nitrogen , fertilizer , horticulture , yield (engineering) , urea , dry weight , biology , agronomy , chemistry , botany , materials science , organic chemistry , metallurgy , biochemistry
Study was conducted in Botanical Garden, Biology Department, College of Science, University of Baghdad, sowing dates were (1/10 / 2000) and ( 1/11/2000), three levels of nitrogen fertilizer (0, 25, 50) Kg N/ ha. as urea (46% N) and three levels of Phosphorus fertilizer (0, 25, 50) kg p2O5/ ha. as triple super phosphate (48 - 52 )% P2O5 and their interactions upon growth, flower yield and methoxalen concentration of (Calendula officnialis L. Var lemon queen). All treatments were arranged in Randomized Complete Block Design with three repilications. Methoxalen was sperated and massuaard with HPLC. The results can be summarized: the first sowing date was significantly superior than the second sowing date in number of branches / leaf area dcm2, number of inflorescence/ plant, flower yield, fresh and dry weight and concentration of methoxalen. Nitrogen and phosphorus treatment were significantly increased in these parameters.