Crude palm oil futures for March softened by Rs 1.60, or 0.35%, to Rs 459.20 per 10 kg in 222 lots.At the Multi Commodity Exchange (MCX), the February contract weakened by Rs 1.30, or 0.29%, to Rs 450.40 per 10 kg in 224 lots.Sluggish spot market demands against adequate stocks affected the trade.