), grass-grass-grass-KM10 (G-G-G-KM10), grass-grass-grass-RK8 (G-G-G-RK8), KM10-Crotalaria  juncea (KM10-Cr) and RK8-Crotalaria …, Zimbabwe. Soil samples were taken from 0- to 15-cm deep, after each season.  After 9 years, tobacco-grass rotations showed … P was lower in the grass (G-G-G-KM10, G-G-G-RK8) relative to the other rotations regardless of variety.  Available P …

coverage includes nitrogen (N), phosphorous (P), and potassium (K). In this report we present the data and procedures used to …

coverage includes nitrogen (N), phosphorous (P), and potassium (K). In this report we present the data and procedures used to …

coverage includes nitrogen (N), phosphorous (P), and potassium (K). In this report we present the data and procedures used to …

-maximizing nitrogen rates, yields, and net returns for corn grown after corn, cotton, and soybeans. The stochastic response functions were … best. The profit-maximizing nitrogen rates were similar for corn after corn, cotton, and soybeans, but relative to corn …

winegrowrs' knowledge levels, problem awareness and management changes regarding nitrogen. The study's core was a standardized …

including changes in (i) rates of nitrogen application, (ii) supplementary irrigation and (iii) new cultivar (with higher … traditional cultivars and average nitrogen application rates of <10 kg N ha-1. The model results showed that the combined changes …

nitrogen fertilization rate, b) adjustment of sowing date, c) implementation of new cultivars, and d) supplementary irrigation … global datasets at 0.5ê x 0.5ê spatial resolution. The nitrogen and cultivar packages were tested for all six countries … improvements across the packages were obtained by increase in nitrogen application rate, assuming that other nutrients like …