Potato leafhopper

Sanford L L, Deahl K L, Sinde S L and Ladd Jr T L (1992), Glycoalkaloid content in tubers from Solanum tuberosum populations selected for potato leafhopper resistance , Am Potato J, 69, 693-703. 

Hooked trichomes on the French bean, Phaseolus vulgaris have been reported to capture a diverse group of insect species including the potato leafhopper, Empoasca fabae (17), and the aphids, Myzus perslcae (18), Aphis fabae (19), and Aphis craccivora (20)1 A recent study has shown that the major factor... 

The possible relationship between the glyco-alkaloid content of the potato and the resistance to the potato cyst nematode has been studied, with some conflicting results being obtained.54 A study on the effect of glyco-alkaloids on the potato leafhopper has been reported.55... 

Causes Potato leafhoppers calcium deficiency salt injury. Look for leafhoppers on plants. duks are ye. . ow-ereen. winged insects. 

Figure 2 depicts just some of the known response-stimulus relationships for plant pests. Collection of the fundamental data and description of the responses with mathematical models can lead to a better understanding of pests in the field. If one knew the current environmental conditions, one could predict whether or not the potato leafhopper would increase during the next week. Final decisions would also be based on the known population dynamics of the pests of interest (see below), as well as the known interaction between the plant host and pest. 

Habidi, J., Backus, E.A. and Czapla, T.H. (1998). SubceUular effects and localization of binding sites of phytohemagglutinin in the potato leafhopper, Empoasca fabae (Insecta Homoptera CicadeUidae). Cell Tissue Res. 294, 561-574. 

One of the wild potato species Radcliffe reported resistant to the potato leafhopper had been described in 1944 from a collecting expedition in Bolivia. J. G. Hawkes, the British potato systematist, described this species, Solanum berthaultiU as follows (8) ... 

Table I. Effect of type B trichome removal on feeding behavior of fourth-instar potato leafhopper nymphs on resistant and susceptible potato clones. Adapted from (22)...

Secondary Screening Methods. Compounds 2 and 3 underwent additional evaluation against the 2-spotted spider mite (SSM, P-resistant strain, Tetranvchus urticae) and the western potato leafhopper adult (WPL, Empoasca abrupta). In these tests, the 2-spotted spider mites were either allowed to infest a Sieva lima bean test plant which was then dipped in the test solution, or they were directly sprayed with a test solution. Activity against the western potato leafhopper was determined using the cut-stem systemic test in which Sieva lima bean plants were allowed to take up an emulsion formulation of the test compound. Compounds 1 and 3 were further evaluated against the tobacco budworm (TBW, Heliothis virescens) and the southern corn rootworm (SCR, Diabrotica unde-cimpunctata howardi). Solutions of the test compounds were applied topically. 

---