تأثير حامض الهيومك و الرش الورقي بالوتاسيوم على صفات الحاصل و بعض مكوناته للذرة الصفراءZea Mays L. صنفCadez

الملخص EN

A field experiment was carried out in the Hawija province /Kirkuk government in one a farmer field through spring season of 2019 to aim study of the effect of ground addition of humic acid and foliar spray of potassium on the growth and yield of spring season of the maize (Zea maize L.) cadez variety.

The study carried out as a (RCBD)design with )and -1 three replicates, the experiment included four levels of humic (0,8.16 and 24 kg.h ).The result showed as followed -1 three concentrations of potassium (0,5 and 10 g.L concentrations of the humic surpassed significantly in the excess of leaf area, -1 24kg.

.h plant height, ear rows number, row grain number, grain yield and protein percentage and 8.51%) -1 ,7.53ton.h -1 ,33.30grain.row -1 ,189.92 cm, 16.08 row.ear 2 (517.87 cm concentrations of the potassium surpassed significantly in -1 respectively.

Also 10 gm.L the excess of leaf area, plant height, ear rows number, row grain number, grain yield and proteinpercentage(501.97 cm2,189.86 cm, 16.77 row.ear'1, 33.61 grain.row‘1,8.29 ton.h'1 and 8.98%) respectively.

The interaction between the two factors (24.kg.h‘1+10g.L‘1)showed significantly superior in the all traits which studied : of leaf area, plant height, ear rows number, row grain number, grain yield and protein percentage(540.39 cm2, 196.66 cm, 17.10 row.ear'1, 34.41 grain.row'1 ,8.49ton.h'1 and 10.04%) respectively.