By Robert K.D. Peterson, Leon G. Higley
Knowing biotic rigidity and plant yield makes it possible for the sensible improvement of monetary determination making, an instrumental a part of built-in Pest administration. and extra, the effect of biotic harm on plant yield bears without delay at the uncomplicated organic questions of inhabitants dynamics, existence background innovations, group constitution, plant-stressor coevolution, and environment nutrient biking. Biotic tension and Yield Loss is a accomplished evaluate of the most recent conclusions of yield loss in entomology, weed technological know-how, and plant pathology, combining state of the art conception with profitable applications.This publication is exclusive in that it's the first to hide all biotic stressors, bugs, weeds, and plant pathogens, and their impression on plant yield and health. It specializes in present wisdom of yield and health loss in either traditional and agricultural ecosystems and on a physiologically dependent method of supply a standard foundation for contemplating and discussing biotic pressure. by way of contemplating biotic pressure in the context of plant ecophysiology, Biotic rigidity and Yield Loss makes an attempt to raise wisdom of biotic pressure to a similar point as abiotic pressure and makes an issue for integrating the 2 different types of rigidity.
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Knowing biotic pressure and plant yield enables the sensible improvement of financial selection making, an instrumental a part of built-in Pest administration. and additional, the effect of biotic harm on plant yield bears without delay at the uncomplicated organic questions of inhabitants dynamics, existence background recommendations, group constitution, plant-stressor coevolution, and atmosphere nutrient biking.
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Extra info for Biotic stress and yield loss
Buntin and Pedigo87 simulated complete defoliation of stubble regrowth in alfalfa by the variegated cutworm for several time periods up to ten days after cutting by manually picking all new shoots at two-day intervals. Damage simulation probably is the most controversial method for damage yield loss assessment studies because of concerns about the ability of surrogate injury techniques to accurately simulate actual injury. The principal assumption about surrogate techniques is that the loss of tissue by pests does not cause systemic or chronic effects on plant growth and physiology that cannot be simulated by mechanical injury.
72, 566, 1979. 40. Buntin, G. , All, J. , McCracken, D. , and Hargrove, W. , Cover crop and nitrogen fertility effects on southern corn rootworm (Coleoptera: Chrysomelidae) damage in corn, J. Econ. ,, 87, 1683, 1994. © 2001 by CRC Press LLC 41. Buntin, G. , and Raymer, P. , Hessian fly (Diptera: Cecidomyiidae) damage and forage production of winter wheat, J. Econ. , 82, 301, 1989. 42. Buntin, G. , and Raymer, P. , Response of winter barley yield and yield components to spring infestations of the Hessian fly (Diptera: Cecidomyiidae), J.
The knotted regression indicated that Hessian fly had little effect on grain test weight when infestations were below 20% infested tiller in autumn or 39% infested stems in spring. This verified that reductions in grain quality as measured by test weight occur at much higher levels of Hessian fly infestation than the levels needed to reduce grain yield. Regardless of the mathematical model chosen, entomologists should be aware of the potential generalized response to injury when characterizing yield loss relationships.