EFFECT OF RUBBER CRUMBS OF USED TIRES AND IRRIGATION WITH SEWAGE WATER ON THE GROWTH OF MORINGA (MORINGA OLEIFERA L) IN DESERT SOIL AND ITS CONTENT OF SOME ELEMENTS

Abstract

A pots experiment was conducted during 2020 at the College of Agriculture, the University of Anbar, to study the effect of used rubber crumbs and irrigation with sewage water on the growth of Moringa and its content of some elements. The experiment included a study of two factors: the first factor was waste tire crumbs at five levels (0, 5, 10, 15 and 20%) based on soil weight which symbol CR0, CR1, CR2, CR3 and CR4 respectively, while the second factor was irrigation (irrigation with common water, alternately irrigation with common and sewage water and irrigation with sewage water) which symbol by W0, W1and W2, respectively. Randomized completely block design (RCBD) according to the factorial arrangement at three replicates was used. The results showed that increasing the levels of adding rubber crumbs led to an increase in vegetative and root dry weight, as well as an increase in the concentration of N, P, K iron, zinc, manganese, cadmium and lead in vegetative growth. Also, the vegetative and root dry weight increased when irrigation with wastewater, in addition to an increase in the concentration of N, P, K, iron, zinc, manganese, cadmium and lead when irrigation with wastewater.