Abstract Second-generation neonicotinoid insecticides are being used to protect seeds and seedlings against injury by early season insects on a wide variety of crops. Seed-applied insecticides have recently been commercialized in the USA for early season insect control in corn. The systemic insecticides clothianidin (Poncho®) and thiamethoxam (Cruiser®) applied as seed treatments were evaluated for their effect on corn yield in the absence of noticeable insect attack over a three year period at a number of locations representing diverse growing environments in Kansas. No consistent effect on yield was detected for either compound at either high or low rates in locations where insects were not observed at damaging populations. Controlled-environment studies detected no differences in early season growth in the absence of insect pests in response to the same two rates of both insecticides. Both compounds were evaluated for their effect on early season corn pests and were found to be effective at high and low rates on wireworm, white grub, flea beetles and chinch bugs. Higher rates of both compounds were needed to reduce feeding damage caused by black cutworm. Seed treatments with either compound would be useful where early season pests are chronic problems.
Click to increase image sizeClick to decrease image size Notes C. Michael Hawn, Gather Into One: Praying and Singing Globally (Grand Rapids, MI: Eerdmans, 2003), 274. Ibid., 275. Additional informationNotes on contributorsPatrick EvansPatrick Evans, associate professor of sacred music in the Yale Divinity School and Yale Institute of Sacred Music, is artist-in-residence at Broadway Presbyterian Church in New York City, and was for ten years minister of music at Hanover Street Presbyterian Church in Wilmington, Delaware, an intentionally interracial, intergenerational, social-justice working congregation committed to the full inclusion of LGBT people in the life and leadership of the church.
We present a model calculation for N identical valence nucleons moving in a pure i122 orbital about a strongly deformed core. The calculation is done in the lab frame for all N. Backbending and decoupled bands emerge for various N-values. The B(E2) values and static quadropole moments are also calculated within this framework.
We report the result of a calculation of the yrast levels for a system of four nucleons in the ${i}_{\frac{13}{2}}$ shell, interacting via a pairing force, and coupled to a strongly deformed, axially symmetric core. In addition to an initial backbend at $I=12$, a second smaller backbend occurs at $I=38$. The structure of the wave functions at the second discontinuity indicates that it arises because of the decoupling of all four nucleons and subsequent alignment with the core angular momentum.