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Effect of doses and methods of phosphorus application on growth of Populus deltoides under nursery conditions

The present study was carried out to determine the effect of different methods and doses of phosphorus application on the growth of Populus deltoides seedlings in nursery. Among the various methods tried, augerpit method of phosphorus application recorded more plant growth. Application of 100 kg P2O5 ha-1 and above resulted in an increase the plant height over control (P0). Doses x Methods interaction reflected significant effect on the plant growth. Treatment combinations of 100 kg P2O5 per ha mixed in augerpits of 15 cm diameter and 20 cm depth and the same dose placed at 5 cm depth in rows, 20 cm apart from the cutting line (on both sides of cuttings) produced plants of more height and diameter, respectively.