Root Weight and Distribution of Blue Panicgrass, Panicum antidotale Retz., as Affected by Fertilizers, Cutting Height, and Soil‐Moisture Stress1

Abstract

SynopsisRoot distribution by weight to a depth of 12 feet showed 70% of the roots in the top 2 feet. A significant root weight increase resulted from nitrogen fertilizer with maximum response at the 525‐pound level. Root weights were significantly increased when 525 pounds of P was applied with 175 pounds of N. No further increase occurred when N was increased to 875 pounds per acre. Other treatments and interactions were nonsignificant (P, K, NK, and PK),. Root weights were significantly reduced with lower clipping heights and lower soil‐moisture‐stress depths. Responses to clipping height and soil moisture were linear.