*Irrigation Agronomist Department of Soils, Haryana Agricultural University, Hissar.
An investigation was conducted for two years with a view to study the affect of row spacing and nitrogen, phosphorus and potash application on the quality of carrot seed. The seed quality as indicated by test weight improved significantly with increasing spacing, the percentage of large seed tended to increase and that of small ones to decrease. The extra small seed and the seed viability were relatively unaffected. Nitrogen had a significant effect on test weight and seed size but had a little effect on seed viability. Both the 500 seed weight and the amount of large seed increased with increasing nitrogen while the small seed suffered a corresponding reduction with little or no change in the extra-small seed. Amongst the seed quality characters studied, only the test weight was significantly higher due to phosphate application. Potash application did not influence the quality of carrot seeds.
