Effects of excessive macronutrients on growth and
             development of ( Phaseolus Vulgaris )
             I predict that excessive Nitrogen(N) added to soil will result in the burning of the leaves and moderate color loss in the bean plant. Excessive Phosphorus(P) added to soil will result in death of the bean plant within a month. Excessive Potassium(K) added to the soil will result in yellowing of leaves and slowly lead to death of the bean plant. Excessive Iron(Fe) added to soil will result in death of bean plant within weeks.
             Introduction
             A experiment was conducted at CSULA greenhouse. To investigate the influence of 16 times the recommended macronutrient amount added to the bean plants in a one month period. The macronutrient Nitrogen, Phosphorus, Potassium are the most common components of plant fertilizers. These macronutrients are the chemical building blocks of plant structure. The addition of macronutrients will generally enhance plant growth. But excess amount will also cause plasmolysis of root cells and damage to or death of the plant (Gomez & Agui 1983). Increased alkalinity or acidity of soil may also affect the availability of cations to plants by affecting their water solubility or interfering uptake by roots. Further more, too much of water are found to decrease in plant height, leaf number and chlorophyll content (Nunez 1998).
             Material & Methods
             Pot experiments were carried out during January to March 2004 to investigate the effect of different levels of macronutrients on growth and development of kidney bean plant (Phaseolus vulgaris) at CSULA greenhouse. Each pot was filled with 1000g of mix soil (pH6.5).
             The seeds were bought in1997 from Burpee Company. The seeds were planted on Dec. 12, 2003 in a mixture of one part peatmoss, redwood compost (by Orchard Supply Hardware) a...