Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society Vol. 16—1962 - NorthEastern Weed Science Society

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22 Literature Cited 1. Buchholtz, K.P. Use of atrazine to control quackgrass in com fields. Proc , NCr,{;C17: 25-26. 1960. 2. Dexter, S. T. Seasonal variations in drought resistance of exposed rhizomes of quackgrass. J. Amer. Soc. Agron. 3!I:1125-1136. 1942. 3. Fertig, S.N. The effectiveness-of combinations of plow-down, pre-emergence and post-emergence treatments for quackgraSs control, 1960 results. Proe , NCWCC15:3l2-311~. 1961. -- 4. Johnson, B.G. Natural and induced dormancy of the vegetative buds on Ilhe rhizome. of quackgress (Agropyron repens (L.) lleauv.). Ph.D. thesis, Univ. of Wisconsin. 1958. - 5. Johnson, B.G. and Buchholtz, K.F-. An in vitro method of eValuati~ the activity of buds on the rhizomes of quackgrass (Agropyron repens (L.) Beauv.). Weeds 9:600-606. 1961. 6. Johnson, B.G. and Buchholtz, K.P. The natural bud dormancy of quackgrass rhizomes. Proc. NCweC14:29. 1957. 7. LeBaron, H.M. and Fertig, S.N. The effects of chemical and cultural treatments on the food reserves of quackgrass rhizomes. Proc , NEWCC 15:319-328. 1961. 8. Meggitt, W.F. Herbicide combinations for quackgrass control. Proc , NC\r.rcC 17:83. 1960. I 9. Meyer, A. A study of factors affecting the bud dormancy of quackgrass (Agropyron repens (L.) Beeuvo).Fh.D. thesis, Univ. of Wisconsin.1961. 10. Meyer, R.E. andBuchholtz, K.P. Some factors affecting the activity and growth of buds on quackgrass rhizomes. Proc , NCtllC 17:37. 1960. 11. 12. 13. Mudd, J.B., Johnson, B., Burris, R.H., and Buchholtz, K.P. Oxidation of indoleacetic acids by quaokgrass rhizomes. Plant Phy.- 34:l44;148. 1959. Pinckney, A.J. Composition and vitality of quaokgrass roots. North Dakota Agr. Exp , Sta. Bull. 334 (Tech.). 1945. Segar, G.R. A~2rn repene - An introduction. Proc , British Weed Control Cont. : 9-263. 1960. Schirman, R., and Buchholtz, K.P. The effect of atrazine on the carbohydrate levels in rhizomes of quackgraes , Proc. NCWCC17:19. 1960. Stoa, T.E., stl,JrlauglUl,V. and !'1cColly, H.F. Control of quackgrass by tillage. North Dakota Agr. Exp. Sta. Bull. 244. 1930. leo Zick, W.H. Factors influencing the effectivenes~ of maleic hydraZide in control1inlZ auack,,'!"/'''''''' Aa1"n~'" ~ft~~__ Tn..... L~ - -, - .,.

23 • ·i INTRODUCTION: !!'he Bearch -tor lUld·de1te~pment of promising. neillC'helDicals for weed eeatr!?l hIlS continued. rapidly.. So. ctoD has the Ileamlh,fornew ,uses for old : herbicides. Treatment method .... ' tilll8,the additiOn of adjuvants, and th, "correct" fOl'lllU:La't1onhave found ·'tl\e1r place' iathe:. fittJ.d of herbicide and practice." ~.•extemied \Ia.·of! newhei'bicidal :eheild:caJ.sis hardly r."eareh . '. possible withou:t khowleilge and :aU:1"ization of .thet acv. factors. .,' ~~ U;,' Physical and chemical combinations of herbicides or herbicides and adjuVants, which l arebffii1g inteniidTely studied, appear promising as a means of increasirig heZ'btcidal actiVities or extending ~- selective properties: for weed control. Equipment is being -developed ~ mod:i:fiedt(j~'~ proper placement and to. take advantage of the physical properties afforded by herbicides formulated on"~lar IlIatel'ials. . . 'i 'i .,' .1, -~~ ~, Several chemicalfamiliesWwto ~d contrClli:.~ been introWCed ad apPear promising as herbicides':1n vai'1oussituatioblh- 'Only time and use Y.Ul prove the worth':ofnew herbicides.": NEWCHEMICALSWITHPROMISINGUSES: Arylamines - Eli Lilly- and' Ccmpa!!y Dipropalin. (If,l(.i,di;'(n~prbW.J;)~, 6-din1 tr~"~J,analin.) was tolerated without visible injury by-a large number of field and horticultural crops when used as a prtl-.mergencetrea1lmen.t~•. Weed control..-: gdod to elCcellent •. .JIB withmilny heZ'bieides it appearsthatl ilIore chemical'1s 'reqUired on heavier" soils. Field crops which tole'r&tW'6-8' lbfA of. tMeo

23<br />

• ·i<br />

INTRODUCTION:<br />

!!'he Bearch -tor lUld·de1te~pment of promising. neillC'helDicals for weed eeatr!?l<br />

hIlS continued. rapidly.. So. ctoD has the Ileamlh,fornew ,uses for old :<br />

herbicides. Treatment method .... ' tilll8,the additiOn of adjuvants, and th,<br />

"correct" fOl'lllU:La't1onhave found ·'tl\e1r place' iathe:. fittJ.d of herbicide<br />

and practice." ~.•extemied \Ia.·of! newhei'bicidal :eheild:caJ.sis hardly<br />

r."eareh<br />

. '.<br />

possible withou:t khowleilge and :aU:1"ization of .thet acv. factors. .,'<br />

~~ U;,'<br />

Physical and chemical combinations of herbicides or herbicides and<br />

adjuVants, which l arebffii1g inteniidTely studied, appear promising as a means<br />

of increasirig heZ'btcidal actiVities or extending ~- selective properties:<br />

for weed control.<br />

Equipment is being -developed ~ mod:i:fiedt(j~'~ proper placement and<br />

to. take advantage of the physical properties afforded by herbicides formulated<br />

on"~lar IlIatel'ials. . . 'i 'i .,' .1,<br />

-~~ ~,<br />

Several chemicalfamiliesWwto ~d contrClli:.~ been introWCed ad<br />

apPear promising as herbicides':1n vai'1oussituatioblh- 'Only time and use Y.Ul<br />

prove the worth':ofnew herbicides.":<br />

NEWCHEMICALSWITHPROMISINGUSES:<br />

Arylamines - Eli Lilly- and' Ccmpa!!y<br />

Dipropalin. (If,l(.i,di;'(n~prbW.J;)~, 6-din1 tr~"~J,analin.) was tolerated<br />

without visible injury by-a large number of field and horticultural crops when<br />

used as a prtl-.mergencetrea1lmen.t~•. <strong>Weed</strong> control..-: gdod to elCcellent •. .JIB<br />

withmilny heZ'bieides it appearsthatl ilIore chemical'1s 'reqUired on heavier"<br />

soils. Field crops which tole'r&tW'6-8' lbfA of. tMeo

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