EFFECT OF CASSAVA AND PALM OIL MILL EFFLUENTS ON SOIL PHYSIC-CHEMICAL PROPERTIES AND THEIR EFFECTIVENESS IN CONTROLLING TITHONIA DIVERSIFOLIA AND MIMOSA INVISA
EFFECT OF CASSAVA AND PALM OIL MILL EFFLUENTS ON SOIL PHYSIC-CHEMICAL PROPERTIES AND THEIR EFFECTIVENESS IN CONTROLLING TITHONIA DIVERSIFOLIA AND MIMOSA INVISA CHAPTER ONE 1.0 INTRODUCTION 1.1 Background to the Study Weeds remain one of the major constraints to agricultural production in developed and developing countries, despite the progress made in weed management. Several weed species continue to interfere seriously with crops, reducing their yields and quality. Besides, weeds are invaders, exotic, colonizers (Joshi et al., 2001; Coblents et al., 2002) and they spread out rapidly in areas where they colonize (Norgroove et al., 2007). Tithonia diversifolia (Mexican Sun flower) family Asteraceae is a fast growing weed that tolerates heat and drought and can rapidly form large herbaceous shrubs (CABI, 2014). The weed is a native of Mexico and Central America. It is adaptable to most soils, and found in disturbed areas, abandoned and waste lands, along roadsides an