A harvester comprising: a distribution chamber configured to receive an agricultural material removed from a field by the harvester; and a spreader system configured to distribute the agricultural material onto the field, wherein the spreader system comprises an opening configured to receive the agricultural material from the distribution chamber, and the opening comprises a first inlet portion and a second inlet portion; wherein the distribution chamber comprises a first panel rotatably coupled to a first side of the distribution chamber, and a second panel rotatably coupled to a second side of the distribution chamber, the first and second panels are configured to direct the agricultural material toward the opening of the spreader system, a first angle of the first panel relative to the first side of the distribution chamber is adjustable to control a first amount of agricultural material directed toward the first inlet portion, a second angle of the second panel relative to the second side of the distribution chamber is adjustable to control a second amount of agricultural material directed toward the second inlet portion, and the first and second panels are independently adjustable, characterized in that the harvester further comprises a first actuator coupled to the first panel and configured to adjust the first angle, and a second actuator coupled to the second panel and configured to adjust the second angle a first sensor and a second sensor for detecting a suitable parameter for controlling the first and second angles (40,50), and control circuitry for receiving data from the first sensor and the second sensor and controlling the first and second angles (40,50) of the first and second panels (36,46) based on the data from the first sensor and the second sensor. a distribution chamber configured to receive an agricultural material removed from a field by the harvester; and a spreader system configured to distribute the agricultural material onto the field, wherein the spreader system comprises an opening configured to receive the agricultural material from the distribution chamber, and the opening comprises a first inlet portion and a second inlet portion; wherein the distribution chamber comprises a first panel rotatably coupled to a first side of the distribution chamber, and a second panel rotatably coupled to a second side of the distribution chamber, the first and second panels are configured to direct the agricultural material toward the opening of the spreader system, a first angle of the first panel relative to the first side of the distribution chamber is adjustable to control a first amount of agricultural material directed toward the first inlet portion, a second angle of the second panel relative to the second side of the distribution chamber is adjustable to control a second amount of agricultural material directed toward the second inlet portion, and the first and second panels are independently adjustable, characterized in that the harvester further comprises a first actuator coupled to the first panel and configured to adjust the first angle, and a second actuator coupled to the second panel and configured to adjust the second angle a first sensor and a second sensor for detecting a suitable parameter for controlling the first and second angles (40,50), and control circuitry for receiving data from the first sensor and the second sensor and controlling the first and second angles (40,50) of the first and second panels (36,46) based on the data from the first sensor and the second sensor.