Ambrosia beetles tunnel into the heartwood of trees where they cultivate and feed upon a symbiotic fungus. We assessed the effectiveness of flood stress for making Cercis canadensis L. and Cornus florida L. trees attractive to attack as part of insecticide and fungicide efficacy trials conducted in Ohio and Virginia. Since female ambrosia beetles will not begin ovipositing until their symbiotic...

A protocol for the coupling of potassium xanthogenates with ?-(trifluoromethyl)styrenes in presence triethyl phosphite is reported. The reaction carried out under blue light irradiation organic photocatalyst 3DPAFIPN. proceeds via formation alkyl radicals from readily available xanthogenate salts oxidative desulfurization and cleavage carbon–oxygen bond assisted by phosphite.

Phytophthora root rot causes extensive damage to feeder roots of avocado. If uncontrolled, it results in a progressive decline in tree health and the eventual death of the tree (12, 14, 15). Phytophthora root rot is a major factor limiting avocado production world wide. Effective control of Phytophthora root rot of avocado has been achieved with fosetyl-al (Aliette® Rhone-Poulenc, aluminum tris...

A simple synthesis of the zerovalent complex Mo[P(OCH(3))(3)](6) has been devised from a potassium reduction of MoCl(4)(tetrahydrofuran)(2) followed by reaction with trimethyl phosphite at 70 degrees . Protonation of this octahedral complex gave only low yields of the expected seven-coordinate hydride, HMo[P(OCH(3))(3)](6) (+). The major product was an octahedral nonhydridic cation, Mo[P(OCH(3)...

Twelve trials, in closed soilless culture under controlled conditions, were carried out to evaluate the efficacy of resistance inducers (based on K-phosphite and K-silicate used alone or combination), experimental biocontrol agents (Trichoderma sp. TW2, a mixture Pseudomonas FC 7B, 8B, 9B, Fusarium solani FUS25, PB26), commercial formulation Trichoderma gamsii + T. asperellum, against diseases ...

The fungicide phosphite was found to reduce pollen fertility in Australian and exotic species. In the perennial Dryandra sessilis the reduction was evident for a year after treatment with 2.5-10 gL,1 phosphite sprayed to run off. Pterochaeta paniculata, an annual, showed reduced pollen fertility in flowers that opened 16-30 days after spraying. The horticultural species Pelunia hybrida and Trad...

The authors have been asked for a review regarding the possible use of monopotassium phosphite as fertilizer based on both current scientific knowledge as well as on the documentation provided by the company Tradecorp. This review is based on a literature survey of papers in peer-reviewed journals. Tradecorp has documented results from 4 studies in Spain and France underlying their claims that ...