BACKGROUND: Small species of fish and juveniles of larger species occupy aquatic plant patches for food (Pardue 1973; Keast 1984) and protection from predators (Crowder and Cooper 1982; Savino and Stein 1989). Differences in density and morphology of plants influence foraging intensity and degree of predator avoidance (Dionne and Folt 1991; Lillie and Budd 1992; Wychera et al. 1993; Dibble, Kil...

The average yield of bulb onions is still quite low. purpose this study was to improve the techniques and methods cultivating using new generation preparations against background N180P60K60 in a drip irrigation method. To achieve objective study, field surveys, observations measurements were carried out generally accepted methods. experimental data obtained from studies processed analysis varia...