752 



THE MONTHLY BULLETIN. 



Flooding.— Flooding' under favorable conditions has been used 

 more or less successfully. To obtain good results the soil must be kept 

 submerged for several weeks. 



Excessive Dryness. — In regions of little rainfall, the number of 

 nematodes can be greatly reduced by deeply ploughing the infested 

 area after the last rains. The soil should be allowed to remain open 

 during the hot weather during the entire summer. This method can 

 not be employed where there is an underground seepage or summer 

 rains. 



Host Plants. 



(The asterisk indicates plants in wliose roots nematodes liave been found. Init 

 incurring no serious injury.) 



list, which includes all plants that 

 susceptible to the attacks of Hetero- 



The following is Prof. Bessey's 

 are at the present time known to be 

 (leva radicicola: 



Al>ro7na augusta L. 



Abutilon sp. 



A cacia dealbata Link. 



Acacia, several species from Au.stralia. 



Achyranthes sp. 



Ageratum conyzoides L. 



Ageratum sp. 



Ajuga rep tans L. 



Alfalfa — Medicago sativa L. 



AlUaria officinalis Andrz. 



Amaranthus astropurpureus* Roxb. 



Amaranthus palmeri* S. Wats. 



Amaranthus retroflexus L. 



Amaranth, spiny — Amaranthus spin- 



osus* L. 

 Amaranthus tricolor L. 

 Almond — Amygdalus (Prunus) com- 

 munis L. 

 Ammi copticiovi* L. 

 Andropogon schoenanthus L. 

 Anemone apennina L. 

 Anethum graveolens"* L. 

 Angelica archangelica L. 

 Angelonia gardneri Hook. 

 Apricot — Prunus armeniaca L. 

 Apple — Malus sylvestris (Pin'us mains) 



Mill. 

 Argyreia nervosa (Burm. ) Bojer. 

 Aristolochia clematitis L. 

 Artemisia ahsinihium L. 

 Artemisia caudata Mich. 

 Artichoke, Jerusalem — Helianthus tuVc- 



rosus L. 

 Artillery plant — Pilea serpyllifolia* 



(Poliv. ) Wedd. 

 Asparagus — Asparagus officinalis L. 

 Aster sp. 



Astrantia carniolica Wolf. 

 Astrantia major L. 

 Australian salt bush — Atriplex semibac- 



cata* R. Br. 

 Australian sarsaparilla — Hardenbergia 



monophylla (Vent.) Benth. 

 Avocado — Persea gratissiina Ggertn. 

 Balsam apple — Momordica charantia L. 

 Balsam — Itnpatiens balsamina L. (,Bul- 



samina hortensis.) 

 Banana. Bruee'.'^ — Musa evsrte Gmel. 

 I^anana. Dacca — Mtisn paradisiaca daccu 



(Hoian) Baker. 

 Banana — Musa paradisiaca sapientum 



(L. ) Kuntze, 



Banana, dwarf — Musa cavendishii Lamb. 



(M. chinensis. ) 

 Balloon vine — • Cardiospermum halicaca- 



bum L. 

 Barberry — Berberis vulgaris L. 

 Barley — Hordeum sativum Jess. 

 Basil — Ociinum basilicum L. 

 Bean, Aconite leaved — Phaseolus aconi- 



tifolius Jacq. 

 Bean, Adsoki — Phaseolus angularis 



(Willd.) Wight. 

 Bean, green gram — Phaseolus radiatus L. 

 Bean, horse — Vicia faba L. 

 Bean, Lima — Phaseolus lunatus L. 

 Bean, Metcalfe — Phaseolus retusus 



Moench. 

 Bean, green gram — Phaseolus max L. 

 Bean — Phaseolus vulgaris L. (Incl. 



P. nanus.) 

 Bean, Seeta — Phaseolus calcaratus Roxb. 

 Beech, Carpinus betulus L. 

 Beet — Beta vulgaris L. 

 Begonia coccinea Hooker {B. rubra). 

 Begonia metallica L. Smith. 

 Begonia olbia kuntze (Bolivia). 

 Begonia rex Putz. 

 Beggarweed, Florida — Meibomia mnlHs 



(Bahl.) Kuntze. 

 Bermuda (Devil) grass — Capriola dacty- 



lon* (L. ) Kuntze. 

 Bihai pulverulenta (Lindl. ) Kuntze. 

 Birds-foot trefoil — Lotus corniculatus L. 

 Bird of Paradise flower — Strelitzia nicolai 



Reg. 

 Bittersweet — Solanutn dulcamara L. 

 Blackberry — Rubus subuniflorus Rydb. 



kR. villosus.) 

 Bluegrass, annual — Poa anniia L. 

 Bluegrass, Kentucky — Poa pratensis L. 

 Boerhaavia decumbens* Dahl. 

 Boerhaavia erecta* L. 

 Bonavist bean (Hyacinth bean) — Doli- 



chos lablab L. 

 Bosea amherstiana (Moq.) Hook. f. (Ro- 



detia). 

 Bouvardia sp. 



Buckwheat — Fagopyrum vulgare* Hill. 

 Ruddleia sp. 



Buffalo burr — Solanum rostratum Dun. 

 Burdock — Arctium sp. 

 Butternut — Juglans cinerea L. 

 Cabbage — Brassica oleracea capitata. 



