Abstract Soil P testing has been widely used to predict crop yields, uptake, and fertilizer demands in agriculture. Diffusive gradients thin films (DGT) provides a zero-sink soil test which mimics diffusion-controlled plant uptake previously found availability crops better than conventional quantity-based tests highly weathered Australian, though not European soils. Here we tested the performan...

Different nonlinear models were evaluated as candidates to describe ruminal degradation kinetics of forages from data obtained by the incubation of the feeds in the rumen using polyester bags. Nine models were used: segmented model with three straight lines (Mod0); simple Mitscherlich or exponential (Mod1); inverse polynomial (Mod2); compartmental model with two exponential terms (Mod3); genera...

estimation of optimum fertilizer rates is needed because of growing economic and environmental concerns. optimum fertilizer rates can be determined by fitting statistical models to yield data collected from n fertilizer experiments. the main goal of this research was to compare and evaluate quadratic, square root, mitscherlich, rectangular hyperbola, linear plus plateau and quadratic plus plate...

ABSTRACT Modeling the response of soils to liming is important for understanding neutralization reactions and predicting lime residual effects. Models based on simple or quadratic polynomial equations are most used due their simplicity ease fitting; however, they fail reproduce a realistic soil liming, indicating decrease in pH as dose increased after reaching maximum point. Thus, several nonli...

Abstract So-called respectively readings have posed serious challenges for theories of syntax and semantics. Sentences like George and Martha respectively denounced and were denounced by the governor (McCawley 1998) show that although the conjoined verbal expressions share the same syntactic subject, they do not predicate that subject in the same way; George (not Martha) denounced the governor,...