Investigation on Phosphorous and Zinc requirement in gladiolus
2007
Banijamali, Mohammad | Yussefbeigi, Anoosheh | Hassanzadeh, Sefollah
Gladiolus is one of the important cut flowers for export and portion of four main flower products in Iran. The experiment was carried out in completely randomize block design with four replication. Experimental treatments contain of four levels ( 0, 90,180 and 270 Kg.h-1 P2O5 as triple superphosphate(46.0% P2O5 )and three levels of zinc( 0, 30 and 60 Kg.h-1 as Zinc sulfate(34.0% Zn). Two additional treatments were 50(T1) and 90 Kg.h-1(T2) phosphorous fertilizer with twice foliar application (2.5 g.l-1 Zinc sulphate) in stage that 3 and 6 leaves appear. In order to improve soil physical characteristics 3 Kg.m-2 decayed cow manure was added before planting uniformly. Tow years combined analysis were showed 90 P2O5 and 60 Kg.h-1 Zinc sulfate increased spike length and flower stem hight. Foliar application of Zinc sulfate and 90 Kg.h-1 P2O5 in soil were caused the most uptake of Fe, Mn, Zn , B and the highest spike.
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