Effect of rate of seeding, inter row spacing and nitrogen on the yield and HCN content of the forage of sorghum (in Iraq)

acide cyanhydrique altura automne autumn azote cantidad de semilla requerida contenido de materia seca dry matter content espacement espaciamiento feed crops fosforo hauteur height hydrocyanic acid nitrogen phosphore phosphorus plantas forrajeras potasio potassium primavera printemps proteine vegetale seeding rates sorghum spacing spring