Novel approaches are needed for overcoming barriers to successful association of herbaceous legumes with grasses in warm-climate pastures and to identify low-cost, long-term solutions to the problem of N limitation in low-input systems. The objective of this experiment was to evaluate defoliation management options during the year of establishment when rhizoma peanut (rp) (Arachis glabrata Bent...

Abstract Background Powdery mildew was found in most of the sunflower fields Egypt, causing severe yellowing blade, petiole, stem and calyx, as well a considerable defoliation during summer season 2018. Out fungal mycelium from infected leaves, collected four Egyptian Governorates (Kafr El-Sheikh, Gharbia, Giza El-Beheira), five isolates powdery pathogen were obtained identified using morpholog...

Laboratory and field experiments were conducted to determine the efficacy of two Bacillus thuringiensis Berliner formulations, Novodor and Raven, for controlling cottonwood leaf beetle, Chrysomela scripta F. (Coleoptera: Chrysomelidae). In laboratory bioassays, larvae or adults were added to petri dishes containing Populus x euramericana Guinier 'Eugenei' foliage that had been treated with dist...

Timing, intensity, and frequency of biomass removal PREDICTING YIELD LOSS IN affects soybean yield. Yield reduction is less sensitive INDETERMINATE SOYBEAN FROM to biomass removal during vegetative growth because soybean can develop new leaf area that can compensate POD DENSITY USING SIMULATED for temporarily reduced assimilatory capacity. Singer DAMAGE STUDIES (2001) reported that yield reduct...

Pasture brome (Bromus valdivianus Phil.) has the potential to increase current levels of herbage production and pasture persistence in New Zealand dryland, well-drained soils. However, there is little literature on effect defoliation management growth this grass under contrasting soil-water restriction levels. The physiology performance were evaluated pots a glasshouse. Defoliation frequency (D...

Registered, multi temporal Landsat data of a study area in central Pennsylvania were analyzed to detect and assess changes in the forest canopy resulting from insect defoliation. Images taken July 19, 1976, and JUne 27, 1977, were chosen specifically to represent forest canopy conditions before and after defoliation, respectively. Several image manipulation and data transformation techniques, d...

Myrciaria dubia (camu-camu) is an Amazonian fruit of economic importance.The most common problems are the damage caused by Conotrachelus dubiae and drop developing fruits. The objective was to clarify factors influencing post-defoliation retention influenced C. in flooded areas. Four treatments were applied: control (T1), bottle trap (T2), adhesive tape (T3), foliar fertilization (T4). research...

Variation in the nutritive value of forages with maturity has been extensively researched (Buxton and MerForage yields are influenced by plant response to defoliation. We tens, 1995; Sollenberger and Cherney, 1995) and shifts examined the photosynthesis and nutritive value of first (first leaves) in proportions of leaf and stem during maturation of and third (third leaves) fully expanded leaves...