Kautilya's Arthashastra 2.24.1

2.24.1

sītādhyakṣaḥ kṛṣitantraśulbavṛkṣāyurvedajñas tajjñasakho vā sarvadhānyapuṣpaphalaśākakandamūlavāllikya.kṣaumakārpāsabījāni yathākālaṃ gṛhṇīyāt //

POSSESSED of the knowledge of the science of agriculture dealing with the plantation of bushes and trees (krishitantragulmavrikshsháyurvedajñah), or assisted by those who are trained in such sciences, the superintendent of agriculture shall in time collect the seeds of all kinds of grains, flowers, fruits, vegetables, bulbous roots, roots, pállikya (?), fibre-producing plants, and cotton.