Vol. 9, Issue 3, Part D (2025)

A field study was undertaken consecutively for two years (2016 and 2017) in Golaghat district of Assam, India to find out the influence of agronomic manipulation especially varied crop establishment on plant nutrient uptake and status in sali rice. The experiment was composed of two methods of crop establishment viz. System of rice intensification (SRI) and conventional rice cultivation (CRC); three planting dates viz. 26^th June, 10^th and 25^th July and four different crop densities (20 cm x 10 cm, 20 cm x 20 cm, 25 cm x 20 cm & 25 cm x 25 cm). The SRI crops registered significantly higher levels of total nutrient uptake which was contributed as a result of a similar pattern of effect by both grain and straw. Except for K₂O by straw, early planted crops showed significantly increased absorption of nutrients by grain and straw. Increased nutrient uptake was recorded with the reduction in crop density, the highest being associated with crop density of 16 hills m^-2 i.e. 25 cm x 25 cm. Improved yield performance was found with increased uptake of nutrients. Significantly higher level of P₂O₅ and K₂O in soil was recorded at the end of two years of investigation under CRC.