Sang et.al. (2013) in the year 2013 the Nano particle has studied the biological characteristics, Chitosan and growth of Robusta coffee in greenhouse warming coffee beans with a Nano-particle size, Chitosan has a molecular weight of 600 tons, kilo to check for Nano-particle concentrations of Chitosan per physical characteristics, such as. The rate of photosynthesis, chlorophyll quantity, and final carote nutrient values that the coffee had been using hot-dry spray spray. Study on nano-particles that result Chitosan with concentration 10 ppm. effect in the bio and the growth in the nursery. Doyonuphak of Chitosan increased 30-50% of the quantity of chlorophyll in the coffee-growing 30-60% off also concentration on photosynthesis of Chitosan a San also increases the absorption of nutrients such as nitrogen, phosphorus, 27.4%-17.3 9.8-30.4%, and 45% of the Nano-particle-30 potassium Chitosan d.Camps affect the growth of the coffee plant. , The study found that the size of the Nano-particle Chitosan also resulted in. Growth parameters of coffee greater than control in the range from 420 to 970 NM. Make a feature through wakaiphap parameter and the growth of the coffee plant. Do not differ
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