Farm Table says:
What is the problem?
This experiment is carried out in Australia to investigate the effects of rates and timing of nitrogen fertilizer and sowing date on yield, nutrient-use efficiency and nutritive value of triple-crop complementary forage rotation (CFR).
What did the research involve?
The triple-crop mainly involved in the experiment are maize, forage rape, field peas. The experiment was carried out between October 2008 to October 2009 at May Farm research plots of the University of Sydney, Camden, New South Wales, Australia.The nitrogen treatment consisted of three varying rates of nitrogen with pre and post sowing of the fertilizers.
What were the key findings?
Increase in yield and IWUE of CFR occurs at the expense of nitrogen use efficiency as applications of N at N1, N2, and N3 decreased NUE of CFR from 524 to 91 kg DM kg-1 nitrogen. Nutritive value, particularly metabolizable energy content of all forages, was similar among nitrogen treatments, and interactions beween treatments were minimal.
Results indicate that increase in NUE of CFR may occur at the expense of reduced yield , but increased IWUE need not compromise the yield of this CFR system.