Table 3.

Percent increase in stem diameter of magnolia grandiflora as influenced by planting date, mulching, and fertilizer placement.

Sampling datePlanting timeMulchFertilizer placement
fallspringwithwithoutnonetopbackfillbottom
12/8025.134.6**z33.126.68*x24.1ay26.4ab33.6ab35.3b
  5/8299.6119.6**121.797.5**93.6a109.3ab119.2b116.2b
  • z Indicates highly significant difference (.01) between mean pairs.

  • y Indicates significant difference (.05) between mean pairs.

  • x Mean separation (.05). Means within main effect followed by the letter are not significantly different.