A Description of Males of Hoplolaimus columbus.
نویسنده
چکیده
The male of the Columbia lance nematode, Hoplolaimus columbus, is described and illustrated from a harvested soybean field in Holly Hill, South Carolina. It is morphologically similar to the female, except for reproductive structures.
منابع مشابه
Management of Hoplolaimus columbus with Tolerant Soybean and Nematicides.
Two experiments, one site per year, were conducted in Scotland County, North Carolina, to determine the usefulness of selected cultivars and nematicides for limiting soybean losses due to Hoplolaimus columbus. Coker 317 was relatively tolerant to this nematode, and Coker 156, Centennial, Dehapine 105, and Gordon were generally intolerant. Most nematicides significantly increased soybean yields,...
متن کاملHost-parasite relationships of Hoplolaimus columbus on Cotton and soybean.
Hoplolaimus columbus suppressed growth and pod yield of soybean in greenhouse tests. Although populations of H. columbus decreased in short-term experiments, increases occurred in long-term studies. The nematode caused extensive damage to the cortical parenchyma and occasionally to the endodermal-vascular region of both cotton and soybean roots. The nematode frequently entered secondary root pr...
متن کاملEfficacy of Cotton Root Destruction and Winter Cover Crops for Suppression of Hoplolaimus columbus.
The efficacy of rye (Secale cereale) and wheat (Triticum aestivum) winter cover crops and cotton stalk and root destruction (i.e., pulling them up) were evaluated in field tests during two growing seasons for Hoplolaimus columbus management in cotton. The effect of removing debris from the field following root destruction also was evaluated. Wheat and rye produced similar amounts of biomass, an...
متن کاملPerformance of Soybean Cultivars in Hoplolaimus columbus-infested Fields.
Yield performance and host suitability to Hoplolaimus columbus of 18 soybean cultivars in maturity groups V and VI and 21 cultivars in groups VII and VIII were evaluated in 10 experiments. No cultivar was highly resistant to H. columbus. Within individual experiments, few differences were detected in yield losses among cultivars; however, over all locations Braxton, Coker 485, and Leflore were ...
متن کاملControl of Hoplolaimus columbus on Late-planted Soybean with Aldicarb.
Efficacy of three rates of aldicarb for control of Hoplolaimus columbus was evaluated on highly tolerant ('Foster'), moderately tolerant ('Coker 368'), and highly susceptible ('Braxton') soybean cultivars planted on 28 June 1985. Average yields of the nontreated cultivars were 557 kg/ha for Braxton, 1,309 kg/ha for Coker 368, and 1,682 kg/ha for Foster. Yield differences were significant. Aldic...
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ورودعنوان ژورنال:
- Journal of nematology
دوره 6 3 شماره
صفحات -
تاریخ انتشار 1974