Vol. 51â1997 - NorthEastern Weed Science Society
Vol. 51â1997 - NorthEastern Weed Science Society Vol. 51â1997 - NorthEastern Weed Science Society
38 THEEFFECTOF FALL-APPLIEDPRODIAMINEONSPRINGOVERSEEDING T. L. Watschkeand 1.A. Borgert ABSTRACf Thi researchwasconductedat the LandscapeManagementResearchCenter,University Park,PA, 0 a mature Kentuckybluegrass(fml pratensisL.) turf to assesswhetherperennial ryegrass . gerenneL.) couldbe successfullyoverseededin the springwhereprodiamioe was appli the previousfall. The weretwo randomizedcompleteblockdesignstudieswiththreereplications(plotsize 3' x 10'). e preemergencetreatmentswereappliedonNovember13, 1995usinga threeft hand heldCO 2 p weredboomsprayerwithtwo 6504flat fannozzlescalibratedto deliver80 gpaat 30 psi and wi a shakerjar for the prodiaminelfertilizercombinations.OnMay 13, 1996,onehalfof eachplotw treatedwith glyphosateat a rateof 5 lb ailA. On May29, 1996,thekilledareaof eachplotw verticutin threedirectionsand the debrisremoved. The areawasthenoverseededat 5lbsllOOOewith Renovatorperennialryegrassin twodirectionsusinga threefootdropspreader. Bothtestsi s received lIb N/lOOOfefroma starterfertilizer. Bothsitesweremaintainedat 2 1/2"usio a 21"'walk behindrotarymowerreturningtheclippingsto thesite and thesite receivedi gationas needed. e study,prodiaminewas appliedat 0.5,0.75, and 1.l3lbs ailA. Control of crabgrass 0196was 93, 95, and 95 percent,respectively. The percentageperennialryegrass coverwas 8, 80, and 75%, respectivelyfor prodiaminerates,whilethe untreatedcontrolhad 88%peren .al ryegrasscover. Althougha slightdecreasein perennialryegrassestablishmentwas observed the prodiaminerateincreased,turf treatedwith the 0.75rate (whichis higherthan recommen ed in Pennsylvania)stillwas similarin perennialryegrassestablishmentto areasnot receivingp odiaminetreatment. In e secondstudy,prodiaminewasappliedusingfourdifferentfertilizercarriersat a rate ofO.751bs i1A. Three of the four materialsprovidedcrabgrasscontrolat 90% or better. The nonprodi ine-treated,but overseeded,areasin this studyhad 83%perennialryegrasscover. The fertilizer/p iamine-treatedareasall had verysimilarperennialryegrasscover(withinthree percentagepointsof 75). It a pearsthatfall-appliedprodiamioe(at recommendeduse rates)doesnot preclude successful verseedingwith perennialryegrassthe followingspring. I Professor d Research Assistant, respectively, Department of Agronomy, Penn State University, University Park, PA 1680 .
I 39 U+ OF SLUDGE BASED FERTILIZERS FOR TURFGRASS I J. A. Drohen, P. C. Bhowmik, and R. G. Prostak I I i ABSTRACT Sewage s dge is a semi-solid material created during biological and physical wastewater treatment. Limi information exists on the effects of sludge based fertilizers on the efficacy of preemergence herbicides. Greenhouse experiments were conducted with Bay State Organic product (Massac usetts Water Resource Authority) at 0, 40, 80, and. 120 IbsllOOOsq. ft. and Milorganite pr ct (Milwaukee Natural Organic Fertilizer) at 0, 25, 50, and 100 lbsllOOOsq. ft. Fifty crab IPieitaria saneuinalis (L.) Scop.] seeds were sown!in 4-in pots. Sludge was applied over the seeds and covered with a 118inch layer of soil. Pendimethalin at 0, 0.5, 1.0 and 1.5 lb. aiJA was applied preemergence with a C~-back:pack sprayer to deliver 50 gpaat 22 psi. Crabg seedlings were counted weekly and dry weights were determined at harvest. All pendimeth . treatments at all rates of both sludge products controlled crabgrass effectively. In a seco d greenhouse study, the effect of sludge products on!the growth and quality of 'Baron' Kentuc bluegrass (EQilpratensis L.) was investigated. Kentucky bluegrass seeds were sown at 2.0 Ib/l sq. ft. in 4-in pots. Bay State Organic product at 0, 20, 40, 80, 160, and 240 IbsllOOOsq. ft. and Milorganite product at 0, 12.5, 25, 50, 100, and 150 Ibsl1000 sq. ft. were applied. entucky bluegrass seedling emergence was determined. Turfgrass clippings were weighed kly in the fall. Turfgrass density was visually rated on a scale of 1 to 9, where 1 = bare round and 9 = full ground cover. Turf color was rated on a scale of 1 to 9, where 1 = ligh yellow color, and 9 = dark green color. Dry weight of turfgrass clippings increased as the sludge rates increased. There were no differences in seedling emergence of Kentucky blueg s among the different rates of both sludge products, except when Milorganite at 150 IbsllOOO . ft. reduced emergence. Kentucky bluegrass fertilized with Bay State Organic emerged earlier bluegrass fertilized with Milorganite and the differences in density were not observed 25 days later. Turfgrass color improved as the rate of sludge products increased. , Field ex riments were conducted on a newly seeded "Baron"·Kentucky bluegrass stand to evaluate the ffeets of Bay State Organic and Milorganite products on the preemergence activity of pen .methalin and on the growth and quality of the turfgrass. Kentucky bluegrass was planted at 2 0 Ibsll000 sq. ft. Bay State Organic product at 0, 20,40, and 80 IbsllOOOsq. ft., and Milorg ite product at 0, 12.5,25, and 50 IbsllOOOsq. ft. were applied. Pendimethalin at 0, 0.5, 1.0, d 1.5 lbs ailA was applied preemergence. Crabgrass plants were counted at the end of the n, and color and density ratings were taken bi-weeklythroughout the season. All combination of sludge and pendimethalin treatments effectively controlled crabgrass. Color and density of e turfgrass improved as the rates of both sludge products increased. These J} ults show that sludge based fertilizer products did not influence the herbicidal activity of pendi ethalin for crabgrass control in Kentucky bluegrass. Sludge products improved turf quality and lor with increased rates. I 1 Graduate Research Assistant, Professor, and Technician, Department of Plant and Soil Sciences, univerSity of Massachusetts, Amherst, MA 01003. I i I i I I i I i I i
- Page 1 and 2: 1 DE~LOPING BEST MANAGEMENT PRACTIC
- Page 3 and 4: 3 MATERIALSANDMETHODS Experiments w
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38<br />
THEEFFECTOF FALL-APPLIEDPRODIAMINEONSPRINGOVERSEEDING<br />
T. L. Watschkeand 1.A. Borgert<br />
ABSTRACf<br />
Thi researchwasconductedat the LandscapeManagementResearchCenter,University<br />
Park,PA, 0 a mature Kentuckybluegrass(fml pratensisL.) turf to assesswhetherperennial<br />
ryegrass . gerenneL.) couldbe successfullyoverseededin the springwhereprodiamioe<br />
was appli the previousfall.<br />
The weretwo randomizedcompleteblockdesignstudieswiththreereplications(plotsize<br />
3' x 10'). e preemergencetreatmentswereappliedonNovember13, 1995usinga threeft hand<br />
heldCO 2 p weredboomsprayerwithtwo 6504flat fannozzlescalibratedto deliver80 gpaat 30<br />
psi and wi a shakerjar for the prodiaminelfertilizercombinations.OnMay 13, 1996,onehalfof<br />
eachplotw treatedwith glyphosateat a rateof 5 lb ailA. On May29, 1996,thekilledareaof<br />
eachplotw verticutin threedirectionsand the debrisremoved. The areawasthenoverseededat<br />
5lbsllOOOewith Renovatorperennialryegrassin twodirectionsusinga threefootdropspreader.<br />
Bothtestsi s received lIb N/lOOOfefroma starterfertilizer. Bothsitesweremaintainedat<br />
2 1/2"usio a 21"'walk behindrotarymowerreturningtheclippingsto thesite and thesite<br />
receivedi gationas needed.<br />
e study,prodiaminewas appliedat 0.5,0.75, and 1.l3lbs ailA. Control of crabgrass<br />
0196was 93, 95, and 95 percent,respectively. The percentageperennialryegrass<br />
coverwas 8, 80, and 75%, respectivelyfor prodiaminerates,whilethe untreatedcontrolhad<br />
88%peren .al ryegrasscover. Althougha slightdecreasein perennialryegrassestablishmentwas<br />
observed the prodiaminerateincreased,turf treatedwith the 0.75rate (whichis higherthan<br />
recommen ed in Pennsylvania)stillwas similarin perennialryegrassestablishmentto areasnot<br />
receivingp odiaminetreatment.<br />
In e secondstudy,prodiaminewasappliedusingfourdifferentfertilizercarriersat a rate<br />
ofO.751bs i1A. Three of the four materialsprovidedcrabgrasscontrolat 90% or better. The<br />
nonprodi ine-treated,but overseeded,areasin this studyhad 83%perennialryegrasscover. The<br />
fertilizer/p iamine-treatedareasall had verysimilarperennialryegrasscover(withinthree<br />
percentagepointsof 75).<br />
It a pearsthatfall-appliedprodiamioe(at recommendeduse rates)doesnot preclude<br />
successful verseedingwith perennialryegrassthe followingspring.<br />
I Professor d Research Assistant, respectively, Department of Agronomy, Penn State University, University Park,<br />
PA 1680 .
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