Fertiliser Technology
Plant tranquillisers

Hold back stem growth and halt plants at a desired height
Produce seedless fruit
Accelerate ripening of food and grain
Cause early maturation of plants

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Fertiliser Technology
Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature

Space velocity of gas is very low resulting in decreased conversion
Very high pressure is required resulting in costly pressure vessel
None of these
Rate of reaction is very low

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