(pine straw needles), pine bark nuggets alone (Timberline Mulch; Oldcastle ® , Atlanta, GA) (pine bark), herbicide alone (herbicide), pine straw with herbicide (pine straw + herbicide), pine bark with herbicide (pine bark + herbicide), and a bare soil
an unbalanced randomized complete block design with four replications ( O’Rourke et al., 2005 ). Treatment structure consisted of three EPTC rates (0, 4, or 6 lb/acre) by four mulch types (bare soil, pine nugget, pine straw, and shredded cypress) and
. Materials and methods Nine locations, including three each of tilled full-sun, nontilled full-sun, and nontilled shaded sites were included in the first year of the study. At each site, eastern redcedar (wood and bark), pine bark nuggets (bark), pine (bark
container industries. Tree-derived mulches such as chipped eastern red cedar, pine bark mini-nuggets ( Pinus sp.), and douglas fir ( Pseudotsuga menziesii ) have widespread availability, reasonable consistency, and are generally accepted by consumers
(Osmocote Plus; Everris, Geldermalsen, The Netherlands) based on the manufacturer’s recommended medium rate for incorporation. PS (Pine Straw of Central Florida, Winter Garden, FL), PB mini-nuggets (Timberline Old Castle Lawn & Garden Inc., Atlanta, GA), or
There has been a considerable amount of interest in alternative substrates for both nursery and greenhouse crop production in recent years. This is due primarily to a decrease in domestic production of pine bark (PB), from which the primary
from a weed-control perspective. In a 12-month study conducted at two locations in Florida, Marble et al. (p. 199) found that using pine bark nuggets resulted in lower maintenance costs and weed pressure compared with pine straw when both were applied
for crop growth. Many mulch products have been recommended as a means of addressing weed control challenges in ornamental plant production ( Chalker-Scott, 2007 ). Richardson et al. (2008) reported over 5 months of weed control with pine bark nuggets
Nutsedge Control in Landscapes Organic mulch and preemergence herbicide can be effective tools in managing yellow nutsedge in landscape plantings. Placement of granular EPTC (above vs. under pine nugget, pine straw, or shredded cypress mulches) was
. Richardson et al. (2008) reported up to 150 d of yellow woodsorrel ( Oxalis stricta ) and hairy bittercress ( Cardamine hirsuta ) control in large (3–7 gal) container-grown ornamentals with 3 inches of PB mini-nuggets. Similarly, Cochran et al. (2009