Effects of sowing date and nitrogen fertilizer on forage yield, nitrogen- and water-use efficiency and nutritive value of an annual triple-crop complementary forage rotation

Md. Rafiqul Islam, Sergio Carlos Garcia - Grass and Forage Science Volume 67 Pages 96-110

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

The complementary forage rotation system has been perceived as uneconomic and the study suggests compelling evidence of this claim.

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.

Final comment

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.

2011 - Md. Rafiqul Islam, Sergio Carlos Garcia - Grass and Forage Science Volume 67 Pages 96-110
Read ArticleSave For Later

Related Resources