Growth and Dry Matter Production of Chinese potato during Off Season as Influenced by Date of Planting and Nutrient Management
Abstract
The recommended time of planting of Chinese potato is from July-October (KAU, 2011) since it is a season bound crop.But Kerala Agricultural University has released one photo-insensitive variety namely Suphala in 2006which is suited for year round cultivation. It is a high yielding (15.93 t ha-1) varietywith a duration of 120-140 days (KAU, 2007).Hence an investigation was undertaken to study the performance of this variety during off season as influenced by date of planting and nutrient management.The investigation was carried out at the Instructional Farm attached to College of Agriculture Vellayani during November 2013 to May 2014. The treatments consisted of four dates of planting (November 15, December 1, December 15 and January 1) and three nutrient management practices(Recommended dose - 60:60:100 kg NPK ha-1 through fertilizers; recommended dose through organic manures - 6 t FYM + 3 t coir pith compost + 3 t wood ash ha-1+ PGPR mix1 and Modified nutrient dose - 60:30:120 kg NPK ha -1 through fertilizers). The experiment was laid out in split plot design with dates of planting in main plots and nutrient management practices in sub plots with four replications.References
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