Potash and Phosphate Fertilization on Irrigated Alfalfa

In this article, a study is outlined. It was initiated to determine the effects of potash and phosphate fertilization on alfalfa production and it's economic profitability. The methods are presented. The results and discussion follow. The results of this study indicated that producers must test the soil and apply the potash and phosphate to maximize yields of aging alfalfa stands on irrigated course textured, sandy soils

Quality and quantity: tackling non-contact attrition in a longitudinal survey

This research note describes some of the methods of reducing non-contact attrition used in the Scottish Young People's Surveys, and suggests that the type of attrition reduction method used can affect the quality of the survey sample