عنوان مقاله [English]
An experiment was conducted at the Agriculture and Natural Resources Research Center of East Azarbaijan (Khosroshahr) to model dry forage production under corn root zone drying conditions. The experiments were as Randomly Complete Blocks with three replications and with treatments of the full irrigation during corn growth period (T1), root zone drying conditions with full irrigation at dough stage (T2), root zone drying conditions with full irrigation at flowering stage (T3) and root zone drying conditions with full irrigation at flowering and dough stages (T4). The root zone during was considered for initiation of rapid growth of corn till the end of the maturity period. There is length and width of experimental plots was 10 and 5.2 m with the plot and furrow spacing as 2 m and 75 cm, respectively. Results showed that irrigation treatments produced significant and different forage. The produced forage weights compared and achieved mean weights at 273.5±5.70, 259.7±66, 194.1±59 and 173.4±75 gr per plant from T1 to T4, respectively. Therefore, full irrigation from 6-7 leaves stage till the end of maturity can de deleted to increase water productivity. The forage productions were modeled as a function of applied water. For irrigation treatment plots, dry forage weight models as a function of days after planting were acquired which these models can be applied to predict or forecast forage production at the subsequent time based on before times of growth.