Field experiments were conducted in Jangdam, in the Tibetan plateau of China, to investigate the forage production potential of oats (Avena sativa L.),forage-type triticale (xTriticosecale Wittmack) and common vetch (Vicia sativa L.).The forage productivity of oats and forage-type triticale were evaluated in comparison with local naked barley (Hordeum vulgare L.) in single and sequential cropping systems, with and without a compaction roller.
Keywords: Annual forage; Compaction roller; Mixed cropping; Sequential cropping; Tibet
We sought to evaluate the effect of a sequential cropping system on the forage productivity of oats and forage-type triticale, compared with the productivity of local traditional naked barley, together with or without additional soil compaction using a land roller.
Productivity of Single and Sequential Cropping of Oats, Forage-type Triticale and Naked Barley Treatments consisted of single cropping and sequential cropping of oats, forage-type triticale and naked barley.
Seeds of each individual forage species were sown on 30April, 2009 for both single and sequential cropping plots at the rate of 300 kg ha .
The first crop of the sequential cropping plots was harvested at the milk-ripening stage (13 July), and the second crop was reseeded on 16July and harvested on 21September, when the growing crops were at the stage of active leaf elongation without floral development.
Table 1: Plant height and hay yield at each harvest for single and sequential cropping
bHarvest date of oats, triticale and naked barley at the ripe stage in single cropping and at the milk ripe stage for the first harvest in sequential cropping; the oats were at the heading stage and the triticale was at the jointing stage at the time of the second harvest in sequential cropping
cThe data could not be measured due to non-emergence of naked barley as the second crop in sequential cropping