Use of fly ash as bio- pesticide for cotton plant

Sengupta Ipshita and Tarar, J.L.

Dumping of industrialized solid waste impinge on the soil, thereby inhibiting the crop growth. The key causes of land pollution have been the industries like pulp and paper industries, power industries, iron and steel industries, oil refineries etc. Fly ash, the tarnished waste product of coal based thermal power plants and well-known for its ill effects on agricultural land, may now serve the farming community. Coal and lignite fly ash equally act as a fine carrier for bio pesticides. It is used as a conditioner to detain soil erosion, and to make plant resistance against diseases. Fly-ash is a valuable and handy ameliorant that may perk up the physical, chemical and biological assets of soils and also is a supply of readily accessible plant macro and micronutrients. Supply of nutrients from fly-ash with bio-solids may enhance their, agricultural use. Thus use of fly-ash is an effectual way of utilization of problematical fly-ash waste in a constructive manner. This study was carried out with the aim of studying the beneficial use of fly ash based pesticide for agricultural purpose. The soil was amended with fly ash based bio-pesticide and the crop chosen was cotton. The study evaluated the effect of fly ash on the plant growth and yield of cotton. Fly ash was applied to the soil after mixing it with manure (w/w), in order to study the effect of fly ash on soil properties. For studying the effectiveness of fly ash as pesticide, pesticide dust formulation of fly ash was applied on the cotton leaves. The study undertaken through this paper revealed that fly ash augmented the various pysico-chemical soil properties and effectively can be used as bi-pesticide. It can be successfully employed as a low-priced and economical bio-pesticide by underprivileged farmers. Fly ash based dust formulation increased the cotton productivity. Application of fly ash had detrimental effect on the growth of pesticides, leading to a significant increase in cotton boll weight and cotton yield based on different fly ash application rates.

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