Disclosed herein are precision seeder heads and seeder components that include precision seeder heads. According to some embodiments, a precision seeder head (500, 505) includes a seed queue tube (560) having an inside circumference that is sized to accommodate one seed (512, 514, 5) at any vertical location, a first seed hold (530, 540) that selectively blocks the seed queue tube (560) when located in a default position and selectively unblocks the seed queue tube (560) when located in the release position, and an optical sensor (550) positioned at a vertical position below the first seed hold (530, 540), the optical sensor (550) adapted to detect seeds (512, 516) dispensed from the seed queue tube (560). Disclosed herein are precision seeder heads and seeder components that include precision seeder heads. According to some embodiments, a precision seeder head (500, 505) includes a seed queue tube (560) having an inside circumference that is sized to accommodate one seed (512, 514, 5) at any vertical location, a first seed hold (530, 540) that selectively blocks the seed queue tube (560) when located in a default position and selectively unblocks the seed queue tube (560) when located in the release position, and an optical sensor (550) positioned at a vertical position below the first seed hold (530, 540), the optical sensor (550) adapted to detect seeds (512, 516) dispensed from the seed queue tube (560).Cette invention concerne des têtes de semoir de précision et des composants de semoir qui comprennent des têtes de semoir de précision. Selon certains modes de réalisation, une tête de semoir de précision (500, 505) comprend un tube de file d'attente de graines (560) ayant une circonférence intérieure qui est dimensionnée pour recevoir une graine (512, 514, 5) à n'importe quel emplacement vertical, un premier élément de blocage de graines (530, 540) qui bloque sélectivement le tube de file d'attente de graines (560) lorsqu'il est disposé dans une position par déf
