Lasioderma serricorne (F.) is a serious pest of stored products that is known to be resistant to the fumigant pesticide gas phosphine. This study investigated resistance in populations from the southeastern United States, and determined if a recommended treatment schedule could kill resistant insects. A laboratory assay for adult insects was developed that used a discriminating concentration of…

Many applied economics journals ban the use of deception in experiments, which contrasts with the policies in other academic disciplines. We examine the cases for and against deception, and describe the ways deception can be employed in applied economics experiments.We create a general ranking of harms from deception in experiments and present evidence from a survey (conducted in summer 2014) …

Existing economic analysis of corn stover as an energy feedstock has not considered potential changes in land use associated with different stover prices. We estimate the response of corn stover supply density to its price driven by changes in land use and examine its implications for a processing plant�s pricing strategy and marginal cost, as well as associated changes in soil erosion. We…

Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) is an effective biological control agent of Australian origin, which has been introduced worldwide to control mealybugs. Although successfully used for >100 yr, its introduction in a new area may cause environmental risks should the populations become invasive. In the present study, a population genetics method was used to make predi…

Farmers throughout the developing world face multiple sources of uninsured risk to agricultural production and household assets. In this paper, we present results from an experimental demand-elicitation exercise in rural Bangladesh to shed light on smallholder farmers� interest in formal insurance products. We propose a suite of insurance and savings products, and we randomly vary the pric…

DESI RATNASARI. NIM : 1101145014. Pengaruh Pemberian Pupuk Organik Padat Azolla microphylla Terhadap Pertumbuhan Bayam Merah (Amaranthus Tricolor L.). Skripsi. Jakarta : Program Studi Pendidikan Biologi. Fakultas Keguruan dan Ilmu Pendidikan. Universitas Muhammadiyah Prof. DR. Hamka. 2015. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk organik padat A. microphylla terh…

Policy makers in the United States often justify agricultural subsidies by stressing that agriculture is the engine of the rural economy. We use the increase in crop prices in the late 2000s to estimate the marginal effect of increased agricultural revenues on local economies in the U.S. Heartland. We find that $1 more in crop revenue generated 64� in personal income, with most going to f…

The insect family Cicadellidae includes economically important vectors of plant pathogens. Hishimonus sellatus (Uhler) transmits jujube witches�-broom (JWB). Currently, H. sellatus and Hishimonus lamellatus Cai et Kuoh are observed to co-occur at the same locality on jujube. H. lamellatus is now suspected to be a JWB vector. As such, correct identification of Hishimonus species present in …

Transgenic crops that produce insecticidal toxins derived from the bacterium Bacillus thuringiensis (Bt) are widely planted to manage pest insects. One of the primary pests targeted by Bt corn in the United States is western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae). Cry3Bb1 corn for management of western corn rootworm was commercialized in 2003, and begi…

The monthly cycle of daily food intake among adult participants in the Supplemental Nutrition Assistance Program is examined using data from the 2007�10 National Health and Nutrition Examination Survey. Exogenous variation in interview and benefit receipt dates provides means for identification, and a difference-in-differences specification is used to account for the large boost in benefi…