اثرات محلول پاشي عناصر كم مصرف بر عملكرد و اجزا عملكرد ذرت دانه اي 407

A survey on the impacts of the leaf consuption micro nutrient elements on yield and yield components of 704 corn

In order lo spraying mieronulrient elements on the grain yield and yield components ol 704 corn hybrid an experiment was carried out in two years (2003. 2004) in research farm situation of Khoy. The experiment was done in spilet plot design by random complete block design (RCBD) base in three alternation. The limes of foliar nutrition in three level (T1 = Sleme extention stage. T2= Tassel ing and T3 = Siem extern ion + lasseling) were main plots and kind of fertilizer lhat used were subordinate plot included 8 levels (F1 absence of fertilizer usage. F2 spraying iron. F3 spraying zinc. F4 spraying manganese. F5 spraying iron + zinc, F6 spraying iron + manganese. F7 spraying /.inc-t- manganese, and F8 spraying iron + zinc + manganese), the result of variance analysis showed lhat except the ear height to stem height ratio, ear wood weight and harvest index, the other experi menial fealuers of the lest were meaning fully under the influence of fertilizing treatment times. So thai the highest grain yield the respectively 11.52 tons per hectare obtained in T3 treatment it also had the highest function of ear longth, ear diameter, ear row numbers, grain in ear rowes, ear grain number and 1000 number grain weight. The results of this survey shows that kind of fertilizer had meaningfully effect on ear height to stem height ratio, ear longth. ear diameter, ear grain rowes. grain in rowes. grain in ear, 1000 grain weight, ear wood weight and harvest index. However thr highest grain yield by 12.18 ton per hectare obtained in F8 treatment (Fe + Zn + Mn) lhat had 34.3% higher than control iraelment.the fertilizer kind euold affected to all experimental featuers