Open Access Research Paper Views (996) Phonological and growth traits of spring maize genotypes for silage production in northern Pakistan Nadar Khan, Nazir Ahmad Khan, Nazir Ahmad Int. J. Biosci. 16(3), 167-172, March 2020. DOI: http://dx.doi.org/10.12692/ijb/16.3.167-172 Keywords: Biomass yield, Maize genotype, Phonological, Spring Details