Correlation and regression studies of yield and yield components as influenced by organic and inorganic sources of nitrogen in turmeric

摘要

A field investigation was carried out to determine the effects of organic manure (FYM), inorganic nitrogen and bio-fertilizer consortium (Azotobacter, PSB and PGPR) on the yield and growth of turmeric during 2012-13 at Punjab Agricultural University, Ludhiana. The treatments were comprised of 75,100 (125 kg N/ha) and 125 per cent of recommended N through organic or inorganic source of nitrogen alone and in combination with bio-fertilizers and control. The correlation was studied among plant height, drymatter accumulation, fresh and processed yield and significantly positive correlation was found between plant height and growth and productivity of the turmeric. The regression was also studied among various growth and yield parameters. It was observed that with 1 q/ha increase in dry matter, there would be 6.829 g increase in weight of rhizomes per plant, 9.031 q/ha increase in fresh yield and 1.427 q/ha increase in processed rhizome yield.