References
- Baker , L. R. 1978 . Spartan hybrid carrot series 1968–1976 , Mich. State Univ. Agric. Exp. Stn. Res. Rep. 359 8 p.
- Barnes , W. C. 1936 . Effects of some environmental factors on growth and color of carrots , Memoir 186 Ithaca , New York : Agric. Exp. Stn., Cornell Univ. . 36 p.
- Berbec , E. 1976 . Meloidogyne hapla Chitwood on some carrot varieties . Hodowla Rosl. Aklim. Nasienn. , 20 : 81 – 96 .
- Brzeski , M. W. 1974 . The reaction of carrot cultivars to Meloidogyne hapla Chitw. infestation . Zesz. Probl. Postepow nauk Rolniczych NR , 154 : 173 – 181 .
- Brzeski , M. W. and Bojda , Z. 1974 . The northern root-knot nematode (Meloidogyne hapla Chitw.) on carrol-pathogenicity and control . Zesz. Probl. Poslepow nauk Rolniczych NR , 154 : 159 – 172 .
- Clark , R. I. 1969 . Resistance to northern rool-knot nematode (Meloidogyne hapla Chitwood) in plant introductions . FAO Plant Protection Bull. , 17 : 136 – 137 .
- Proctor , J. R. and Marks , C. F. 1974 . The determination of normalizing transformations for nematode count data from soil samples and of efficient sampling schemes . Nematologica , 20 : 395 – 406 .
- Slinger , L. A. 1976 . Ontogeny of Daucus carota in relation to Meloidogyne hapla with a preliminary endomycorrhizal study , Michigan State Univ. . MS Thesis, 146 p.
- Stein , W. 1963 . Investigations on the infestation of carrots by Meloidogyne hapla Chitwood in two successive years of cultivation Z . Pflanzenkr. Pflanzenpathol. Pflanzenschutz. , 70 : 217 – 224 .
- Townshend , J. I. 1963 . A modification and evaluation of the apparatus for the Oostenbrink direct cottonwool filler extraction method . Nematologica , 9 : 106 – 110 .
- Vrain , T. C. 1978 . Dissémination et importance des nématodes phytoparasites dans les sols organiqucs du Québec . Phytoprotection , 59 : 186 Abstr.
- White , J. M. and Strandberg , J. O. 1978 . Early root growth of carrots in organic soil . J. Am. Soc. Hort. Sci. , 103 : 344 – 347 .
- White , J. M. 1978 . Soil preparation effects on compaction, carrot yield and root characteristics in organic soil . J. Am. Soc. Hort. Sci. , 103 : 433 – 435 .
- Wilson , J. D. 1946 . Rclativesusceptibility of carrot varieties to nematode damage, yellows and defoliation by blights . Bimonthly Bulletin. Ohio Agric. Exp. Stn. , 31 : 35 – 39 .
- Wilson , J. D. and Hedden , O. 1964 . Effect of repeated applications of nematicides on vegetable yields and nematode populations in muck soils . Plant Dis. Rep. , 48 : 698 – 702 .