Comparison of the conventional and alternative methods of maize cropping system with aspect to quality of main product
2000
Pechova, M.
The results obtained in time 8-year (1992-1999) stationary trial in conventional treatment of regular farmyard manure application with by-product of the yield caused improvement of soil water regime and marked corn yield increase (from 10 to 8 on almost 13 t.ha-1). In 1999 in all of the treatments higher corn yield was obtained, when compared to 1995. However lower N-substances in grain were registered in 1999. I.e. higher yields are in non linear ratio to N-substances. After more detailed assessment of the years however is obvious that with yield increase total amount of N-substances was increased. This correlation relationship is annually fixed to the other concentration range. This is also under influence of hydrometeorological conditions of the given year only that enable soil nutrient offer to be utilised more effectively. Can be stated that potassium level increase, at given offer of other nutrients, in all treatments non-only yields were increased, but N-substances in corn, too. In 1999 linear correlation was registered also between soil available P and N-substances cumulation in grain
Показать больше [+] Меньше [-]