Agriculture is considered as a big industry in a sense that huge man power and money are involved. The farmers are always trying to get high production with minimum cost. It is well known that fertilizer is one of the major factors of crop production and nitrogen is essential macronutrients required by the plants for their growth, development and yield. The most widely used nitrogen containing fertilizer is urea because high content of nitrogen (46%N) commercially available and low cost of production. However high solubility followed by overdose in application causes economic loss and ecological imbalance. In this regard designing of a slow or controlled release technology which increased the efficiency use of urea fertilizer as well as checking environmental pollution. In this research our main objective is to reduce solubility by the fixing urea to biodegradable polymer matrix. In this work a copolymer were used. Acrylamide (AAm) and Maleic acid(MA) were used for this purpose. This was prepared by solution copolymerization of acrylamide and maleic acid and urea was then covalently fixed through the activated carboxylic groups. The resulting product name is P(AAm-MA)U. A pot experiment was carried out to investigate the effect of P(AAm-MA)U in soil by studying on the physical growth of green chilli “capsicum annum” plants. The examined result showed that all growth characteristics parameter namely plant height, number of leaves, leaf weight and area, nitrogen in leaf and in soil during cropping season were higher when pots were fertilized with copolymer matrix as compared to urea and control (without N-fertilizer). Results also showed that fresh weight of leaves, roots, stems, total dry matter and nitrogen in plant parts and in soil after de-plantation were grater than that of urea and control. The nitrogen release behavior in soil over the cultivation period and plant uptake of nitrogen suggested that P(AAm-MA)U can be used as slow release nitrogen fertilizer.
