EFFECT OF POTASSIUM APPLICATION BY SOIL AND FOLIAR IN SOME MORPHOLOGICAL AND PHYSIOLOGICAL PARAMETERS OF Zea maysL

Abstract

This study has been achieved in a nursery that belongs to the Directorate of Diyala Agriculture of in autumn The Season 2014. The soil in which the corn is grown was Sandy clay. The aim of this study is to know the effect of Potassium application by Soil and Foliar in some morphological and Physiological Parameters of Corn Buhooth 106. The randomize complete block design (RCBD) with three replications was conducted Ground addition 80,40,20,0 kg K+ ha-1 to and foliar applications (0, Spray with water, 2000 and 4000 mg K l-1) as Potassium sulfite (41.5% K+). The results shown that there are differences in the third level ( 40 Kg.K.ha-1). The differences were in the Plant height (162.4 cm), Leaf Area (518. Dsm2), Weight of 100 grains (22.7 g), Chlorophyll content (48.7 Spade unit) and concentration of Potassium in the leaves. Using K Foliar application treatment was 4000 mg.L-1 caused Significant difference in the plant high (159.1 cm), leaf area (505.1 dsm2), weight of 100 grain (21.8 g), chlorophyll content (50.7) and concentration of potassium in leaves (1.75%) The interaction between the Level 40 Kg K-1 as ground addition and 4000 mg l-1 as foliar application gives the best results in all parameters.