436 Sal Tree India Seed 10,900.00 20,600.00 1,200.00 Calculated value The article mentioned the density of an average Sal forest for trees above the age of 20 years is 589 trees per ha. The seed production varies from 2 kg to 35 kg/tree/year. Hence the yield calculated is varies from 1178 kg/ha (minimum value rounded to 1200 kg/ha) to 20615 kg/ha (maximum value is rounded to 20600 kg/ha). 1,726