A good example is witchweed
(Striga spp), which attacks crops of the Poaceae family.
Plant type Common name Scientific name Grasses Bermuda grass Cynodon dactylon Bunchgrass Plants Alexandrian senna Cassia angustifolia Asiatic witchweed
Striga hermonthica Trees Alexandrian senna Mesquite Prosopis Plant type English name Grasses Vilfa stellata Vetiveria zizanioides Plants Cassia officinalis Witchweed
Trees Prosopis juliflora Table 10: Native plant identification summary.
Timko, "Genetic structure and analysis of host and nonhost interactions of Striga gesnerioides (Witchweed
) from Central Florida," Journal of Phytopathology, vol.
Onek, "Effectiveness of arbuscular mycorrhizal fungi in protection of maize (Zea mays L.) against witchweed
(Striga hermonthica Del Benth) infestation," Journal of Agricultural Biotechnology and Sustainable Development, vol.
The Institute calls for partnership between companies in the manufacture of crop chemicals and seeds and BMGF to expand the use of coated seeds in addressing pests and diseases and gives the example of BASF's StrigAway, which has been touted as solution in the battle against striga, commonly known as witchweed
, now a major threat especially among maize farmers in East Africa.
* Striqa (Witchweed
) is an African parasitic weed of maize.
Management of witchweed
Striga hermonthica and stem borers in sorghum Sorghum bicolor through intercropping with green leaf desmodium Desmodium intortum.
At the same time, application of N[H.sub.4][C.sub.2][H.sub.3][O.sub.2] salt to Striga inhibited seeds germination and haustorium formation which was the main issue in controlling witchweed
(136.) The species appearing on both lists are Cogongrass (Imperata cylindrica), Giant Hogweed (Heracleum mantegazzianum), Old World Climbing Fern (Lygodium microphyllum), Tropical Soda Apple (Solanum viarum), and Witchweed
Regulation of witchweed
(Striga asiatica) conditioning and germination by dl-strigol.
Number of Weed species seeds/plant Velvetleaf 1500 Yellow nutsedge 2400 Giant foxtail 2500 Pennsylvania smartweed 3000 Barnyardgrass 7000 Common ragweed 15,000 Jimsonweed 23,400 Shepherd's purse 38,500 Curly dock 40,000 Common purslane 52,000 Common lambsquarters 72,000 Stinkgrass 82,000 Redroot pigweed 117,000 Black nightshade 178,000 Russian thistle 200,000 Witchweed
500,000 Table 14-4 Effect of increasing weed densities on crop yields.