Search Results

You are looking at 1 - 10 of 236 items for :

  • regrowth control x
  • All content x
Clear All
Free access

Shawna L. Daley and Richard L. Hassell

grafted watermelon transplant production ( Choi et al., 2002 ; Memmott and Hassell, 2010 ) because it decreases graft success and requires additional labor to control. If the regrowth is not removed manually during production, it will outcompete the

Free access

Dan Chapman, Laurence Sistrunk, and J. Benton Storey

Stumps remaining after tree removal during orchard thinning will characteristically produce extensive shoot growth in response to the massive root systems that previously supported large trees. A 38-year-old pecan orchard was thinned from 15 × 15 m to 21 × 21 m. Stumps ranging from 45 to 65 cm in diameter were treated in seven replications with 0.19, 0.37, and 0.75 kg KNO3, respectively, per stump in drilled holes. Two controls consisted of stumps with drilled holes and intact stumps with no holes. Eight holes per stump were drilled with a 2.54-cm-diameter power auger to a depth of 15 cm. The number and weight of regrowing sprouts was measured annually. The 0.75 kg KNO3 rate significantly reduced the number and weight of sprouts regrowing the first year. The drilled stumps showed a significant decrease in new sprouts over the undrilled control. The low KNO3 rate stimulated regrowth. The key to regrowth suppression is to use a high rate of KNO3 in sufficient holes to allow penetration. KNO3 stump treatment should be a safe practice because no more than, perhaps, 2.25 kg of KNO3, depending on trunk diameter, will be used per site, which will then provide nutrients to existing trees as it dissipates.

Free access

Alisson P. Kovaleski, Jeffrey G. Williamson, Bruno Casamali, and Rebecca L. Darnell

subtracting that from the canopy volume measured the next December, when plants were dormant. For the non-pruned control, regrowth volume was defined as the difference between the volume of plants in June and in December of each year. After shoot growth ceased

Free access

Hunter C. Smith, Jason A. Ferrell, and Tyler J. Koschnick

growth habit of E. pungens, or species sensitivity, may explain the lack of significant differences in biomass. Fig. 1. Shoot regrowth of Elaeagnus pungens treated by a granular or drench flurprimidol application compared with an untreated control [15

Full access

William E. Klingeman, Gregory R. Armel, Henry P. Wilson, Thomas E. Hines, Jose J. Vargas, and Philip C. Flanagan

; Bradley and Hagood, 2002a , 2002b ; Day et al., 1997 ). Clopyralid can control mugwort and reduce regrowth the following year, yet clopyralid is relatively expensive, has limited efficacy against other commonly encountered weed species, and is challenged

Open access

Jacob C. Domenghini

regrowth), and number of retreatment applications needed for each subplot were analyzed. Means were compared among weed control treatments (glyphosate, 5% AA, 20% AA, and 30% AA) and treatment application timing (fall/spring and spring only). All data were

Free access

Zane Raudenbush and Steven J. Keeley

resulting from peak-bloom application was significantly lower (26%). With regard to the shorter-lived control observed in 2011, other researchers have recorded good dandelion control several weeks after treatment but noticed regrowth from the taproot ( Mann

Free access

Sahar Dabirian and Carol A. Miles

often removed only partially, and thus, meristem regrowth occurs. Even in the most sophisticated grafting operations today, 2% to 3% of grafted plants will have rootstock regrowth (G. Causarano, personal communication). Additionally, if the regrowth is

Full access

Chuck Ingels and John Roncoroni

. Halosulfuron is intended to control yellow and purple nutsedge. It was included in this study to determine if it would cause unacceptable phytotoxicity on dune sedge. None of the herbicides used in this experiment were expected to control the regrowth of

Free access

Alisson P. Kovaleski, Rebecca L. Darnell, Bruno Casamali, and Jeffrey G. Williamson

the fall, five shoots per plant originating from regrowth after the pruning treatments—or in the case of the nonpruned control, the entire year’s shoot growth—were randomly selected for assessment of the total number of inflorescence buds per shoot