1Central Potato Research Station, Gwalior-474006, India
2Central Potato Research Institute, Shimla-171001, India
A field experiment was conducted during 2011-12 and 2012-13 at the experimental site (260N and 780E and 207 m above mean sea level) of Central Potato Research Station, Gwalior (Madhya Pradesh) to work out the N needs of component cropsin pearl millet-potato sequence. The experiment comprised of 5 treatments (0, 33, 66, 99 and 133 % of recommended) to both the crops in sequence. Results revealed that application of recommended dose of N to both crops resulted into higher production of potato and pearl millet with the maximum of net returns. Highest system productivity (48 kg/ha/day) and pearl millet equivalent yield (17.2 t/ha) were recorded with recommended dose of N. However highest system profitability (451/ha/day) was recorded with 133 % applied treatment. Hence, it is concluded from the study that both the crops in the sequence require recommended dose of N for better yields and profitability.
Pearl millet-potato sequence, profitability, net return, water use efficiency, equivalent yield, nitrogen
