The Express Blower™ is also equipped with two seed injection ( SI )units which will mix seed directly with the soil mix in the  air stream as it is applied. The seed injection systems are computer calibrated to exact specifications  for kgs per hectare as per your site requirements. This seed injection system is used in several applications, or BMPs, to provide grass or turf establishment to assist in the creation of erosion protected sites. The SI units can also be used to apply unique fertilizer requirements or other additives that may be required at time of application. In addition to the SI units, liquid can also be mixed with the air stream of soil mixes to also allow for the addition of and endless list of liquid fertilizers or fluids such as compost tea or concentrated bacteria as may be required.