Full TGIF Record # 219378
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Web URL(s):https://listings.lib.msu.edu/nttfd/1951.pdf#page=27
    Last checked: 01/16/2017
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Radko, Al
Author Affiliation:Research Agronomist, USGA Green Section
Title:[Weed free Zoysia seed production; The effects of boron upon Zoysia seed production and coordination with the National Crabgrass Trials]
Meeting Info.:October 7-9, 1951
Source:Proceedings of National Turf Field Days. 1951, p. 27-29.
# of Pages:3
Publishing Information:West Point, Pennsylvania: West Point Lawn Products
Keywords:TIC Keywords: Application rates; Boron fertilizers; Cultivar evaluation; Herbicide efficacy; Herbicide evaluation; Research priorities; Seed production; Weed control; Zoysia
Abstract/Contents:"We have been primarily interested in three projects this year here at Beltsville station. The first is Zoysia seed production from the standpoint of producing weed free seed and secondly, the effects of boron upon Zoysia seed production in the field and third, we are coordinating the National Crabgrass Trials which in itself has been a rather large project. First with reference to seed production, as you perhaps know, Dr. Marvin Ferguson, who is on a year's leave of absence, found in his greenhouse nutrition studies that boron was beneficial to seed production of the Z-52 strain of Zoysia. We attempted this past year to apply this information to seed production in the field and we have laid out several boron treated plots; one on the Z-52 that you will see tomorrow and another on common japonica with which we received some pretty interesting results. We found that in each case the boron aided seed production. However, the area was established from several different strains of common japonica and the differences within each replication gave us no significant difference when we subjected it to statistical analysis. We feel sure when we do analyze our results on the Z-52 and other pure strain areas that we will have some good results to report to you. Secondly, in cooperation with the United States Department of Agriculture, Weed Control Division, we are attempting to do something about the problem of chickweed and annual bluegrass infestation in Zoysia seed production areas. As you know, they are both cool season weeds and they com one when Zoysia is emerging from or going into dormancy. In managing these areas for seed production, we stop mowing the Zoysia early in May and without mowing chickweed and annual bluegrass become a nuisance. With this in mind we have gotten together with Shaw and Lovvorn and decided to use the following chemicals on this particular area of Z-52 - sodium floarosilicate, boronium fluoride, sodium arsenite, sodium chlorate, PMA, potassium cyanate 2, 4-D and dinitro formulation. This is more or less a pilot test plot - one which we hope will provide information for larger scale, replicated trials. We applied the herbicides in two directions so that we are testing each herbicide alone and in combination with most others. As yet we don't have any results to report. We just started this project about three weeks ago but we hope it will develop into something that will help provide weed free Zoysia seed for the future. The third main project is our role as coordinator of the National Coordinated Crabgrass Trials. As yet we haven't received results from all cooperating, but we've been busy analyzing those that have been submitted. Here at the station, however, in cooperation with Professor Musser of Penn State and working on a grant from the American Cyanamid Company, Bob Elder, graduate of Penn State, was sent down here to do some work on crabgrass control in this area. Part of his work dealt with a crabgrass control project which was part of the National Coordinated effort. We have used potassium cyanate, PMA and sodium arsenite in these trials which you will see tomorrow. The rates at which PMA was applied were zero, five pints and eight pints per acre. The rates for potassium cyanate were zero, eight pounds and twelve pounds per acre and the rates for sodium arsentie were zero, one pound and two pounds per acre This year we've had unusually dry weather and we have had quite a bit of trouble in keeping soil moisture conditions at a good level. In statistically analyzing the different treatments, we found no significant difference between 5 pints of PMA per acre as compared with 8 pints per acre. The same held true between the 8 and 12 pound treatments of potassium cyanate. Our sodium arsenite treatments gave us a rather severe injury on the permanent grasses as well as crabgrass due to poor soil moisture conditions. Other phases of these trials will be reported on tomorrow when we inspect the plots."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Radko, A. 1951. [Weed free Zoysia seed production; The effects of boron upon Zoysia seed production and coordination with the National Crabgrass Trials]. Proc. Natl. Turf Field Days. p. 27-29.
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    Last checked: 01/16/2017
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