Ash is a by-product from forest trees, and has proven to be an effective limning material to neutralize acid soils, or ash is powder that remains after burning such materials as wood, rice husk and coconut. Acidic soils limit the fertility of soil and crop yield, and the range of crops the farmers can raise. Important crops in our region are pH sensitive and thus, grow poorly on acidic soil. Ash is an important and valuable agricultural resource because its productivity on pH sensitive soils.

            The increase in soil pH resulting from the application of ash provides a more favourable environment for soil micro-organism, to thrive well and this also enhances an increase in the rate of nutrients released to the plant Application of ash also increases nitrogen levels in soil. (Chiou et al 1986) explained that the mobilization of ash on soil after application might result in movement of already accumulated organic contaminants. (Tsutomu 1990) expressed that ash is a good liming agent which supply modest quantities of P and K to the soil and its application is best done by hand spraying. Sheinberg et al (1989). Also expressed that sodic soils where high concentration of exchangeable and soluble Na+ as lime commonly gypsum enhances flocculation. It is reported that gypsum get as ameliorant for sodic soils. It is a good liming agent that helps to raise calcium levels and enhance good soil structure without a corresponding increase or rise in pH. In addition, gypsum improves soil drainage and aeration vizcayno , 2001.
            Ash when used as soil amendment reduces soil acidity to levels required for maize production. It improves yield in soils low in pH. Hence ash being a Ca containing minerals raise soil pH. The different levels of ash application result to repulsive forces between particles dominate and lead to dispersion. The increase in available P. could be attributed to traces of P released from Al3+ in line with the different levels ash application result to repulsive forces between particles dominate and lead to dispersion. The in increase available P. could be attributed to traces of P released from Al3+ in line with the (Ikpe et al (1997). Adetunji (1998) showed that ash reduced soil acidity and increased cations/nutrient available in the soil. Similarly studies by Owolabi et al (2003) Odedin et al., (2003) and Awodun et al., (2007) showed that plant from ash increased soil nutrient content. Kayode and Agboola (1993) attributed the increased CEC in ash amended soils to increased cations of ca, K and Na. The high ECEC observed in ash amended soil was in line with observation of Noltidge et al., (2006). Breath and Amebrant (1994) observed the increased soil nutrient due to ash application could be due to ash application could be due to enhance microbial activities in the soils and production of organic matter. The increased maize grain yield could be attributed to higher organic matter in the ash amended soil plots. Organic matter according to Tisdals (1993) and Brady and Weil (2006). play important roles in essential nutrient availability and soil improvement.
            An increase in the soil pH may increase the decomposition rate of soil organic matter by soil microbes and this may speed up the rate of release of such plant nutrients. Chemically ash consists of 82-87% silica exceeding that of clay. Materials containing high reactive Silica(siO2) is suitable to be of Portland cement. The high percentage of siliceous materials in the ash makes it excellent materials for stabilization of soil and the addition of ash increased the optimum moisture content of the soil. The increase in optimum moisture content may be caused by the additives to precede chemically reaction.
            Application of ash reduce to particles implies that ash altered the soil texture. Consequently, the swelling potential and compressibility were reduced while the soil bearing capacity was greater than before according to Balasubraniam et al., (1999).
Share on Google Plus


The publications and/or documents on this website are provided for general information purposes only. Your use of any of these sample documents is subjected to your own decision NB: Join our Social Media Network on Google Plus | Facebook | Twitter | Linkedin