[The changes of soil agrochemical indices in the static field experiment with different fertilizers application and the relationship of plant yield to mobil nutrients status in the soil]
2000
Petraitiene, V. (Lithuanian Inst. of Agriculture, Dotnuva (Lithuania))
Over the period 1993-1997 at the Lithuanian Institute of Agriculture long-term field tests were carried out in order to investigate the variation of soil agrochemical indicators in crop rotation applying different fertilization methods. It was the third crop rotation of the five started in 1983. The influence of mobile nutrient components of soil on the yield was less considerable. In the first test, while fertilizing with nitrogen fertilizers and the content of mobile phosphorous becoming higher, the average crop rotation productivity increased correspondingly. Fertilizing with NPK (II test), the highest crop rotation productivity (5305 fodder units/ha) was obtained when the content of mobile phosphorous in the soil was 200-250 mg/kg. The dependence of crop rotation productivity on the content of mobile potassium in soil was insignificant
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