The aim of this study was to evaluate the response corn (Zea mays L.) grain yield nitrogen (N) fertilizer application and its residual effect on soybean [Glycine max (L.) Merr.] seed yield. During 2021 growing season, a corn-soybean rotation continued at Scandia, KS (USA), evaluating five N rates (0, 53, 107, 161, 214 lb N/a) applied in under both dryland irrigated conditions. Average yields ra...

The pink hibiscus mealybug (PHM), Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae) and the associated hymenopterous parasitoid, Anagyrus kamali Moursi, 1948 (Hymenoptera: Encyrtidae), are reported for the first time in Brazil. Specimens of the PHM were collected on nine hosts plants, Annona muricata L. (Anonnaceae), Glycine max (L.) Merr. (Fabaceae), Centrolobium paraensis Tul. (Fab...

Soybean aphid (SA: Aphis glycines Matsumura) is one of the most serious pests of soybean [Glycine max (L.) Merr.] worldwide. A single dominant gene was found to control SA resistance in soybean line P746, which exhibits antibiosis resistance. This study aimed to define the location of the SA resistance gene in P746. A F2:3 mapping population, including 312 individuals, was created based on the ...