questions: asking about cultural practices of napier grass 
 answers: recommended to farmer that
variety- clone 13 and bana grass
growing period -recommended to remain in same field for 3 to 5 years.
spacing - 60 cm x 90 cm
fertilizer- urea-16 kg ssp- 20 kg mop- 8 kg per bigha
harvesting- napier grass is ready for harvesting 3-4 months after planting and harvesting can continue at an interval of 6-8 weeks for 3 - 5 years