Fertiliser Technology
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?

None of these
Nitrogeneous fertiliser
Phosphatic fertiliser
Potassic fertiliser

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Fertiliser Technology
Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the

Osmotic pressure of the soil water becomes less than that of the plant sap
Soil becomes too alkaline
Soil becomes too acidic
Osmotic pressure of the soil water becomes higher than that of the plant sap

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Fertiliser Technology
Plant tranquillisers

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

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