تأثير الكثافة النباتية و الأسمدة العضوية في نمو و حاصل الذرة الصفراء(الشامية)‎ Zea mays L. everta

الملخص EN

A field experiment was carried out in the autumn season of 2018 in a farmer fields in Golddera in Elton Kobri area in the district of Dibs.

A factorial experiment with three replicates was applied using a randomized complete block design each replicate included (12) treatment of the Combination between the studied Factors , The first factor was three plant densities(88888, 66666 and 53333) plant.h-1 and the second factor was 1- (NPK fertilizer at 320kg N.h-1 , 200kg P.h-1 , 200kg K.h-1 , 2-NPK+ additive (8)ton.h-1 sheep residue fertilizer,3- NPK+ addition of humic acid at the rate of (16)kg.h-1 , 4- and NPK + spray of marine algae extract rate of 3 kg.h-1 ) Far trait studied The results showed:- (The Leaf Area of the main clover Leaf, No.

Of Plant Ear, No.

Of Ear Grains, Weight Of 300 Grains, Single Plant Yield(gm .plant-1 ), grain yield kh/h, Harvest Index, Protein Percentage % ) 1- The medium density(66666plant.h-1 )surpassed significantly in the number of ear.plant-1 (1.9), weight of 300 grain(46.5g), grain yield(135.4) g.plant-1 , harvest index (43.5%), grain yield per unit area(9212.9) kg.

h-1 .

2- The NPK treatment and addition of the humic acid surpassed significantly in the number of ear .plant-1 ,grain yield g.plant-1 (1.9,134.1)respectively, while the treatment of NPK+ animal fertilizer surpassed significantly in the number of ear.plant-1 (1.8), number of grains .Ear -1 reached(493.6) respectively, except of mineral fertilizer NPK which was significant in grain yield(9799.5kg.h-1 ) only .

3- The interaction between plant density and organic fertilizer was significantly in all studied traits.

The best combination was medium density(66666plant.h -1 )and the density(66666plant.h -1 ) and NPK+ addition of humic acid surpassed in number of number of grains.

ear-1 , weight of 300 grains, plant yield(g), reachd(489.9 grain.ear-1 , 47.1g , 151.3 g.

plant-1 )respectively.