Chickpeas and wheat were grown in 1992. Chickpeas and wheat were again grown in 1994. Practical situations will almost always be somewhere between these two extremes. Grain yield and grain protein of Wilgoyne wheat grown in 1993 at Bencubbin with different rates of nitrogen applied at sowing, after either wheat or chickpeas in 1992. The wheat was sown on 14 June 1993.
Solid symbols are wheat after wheat and open symbols are wheat after chickpeas.
Wheat yields responded to applied nitrogen in 1995 when there wasn't much available from the previous chickpea crop, but only slightly in 1993 when there was lots. Grain yield and grain protein of Amery wheat grown in 1995 at Bencubbin with different rates of nitrogen applied at sowing, after either wheat or chickpeas in 1994. The wheat was sown on 25 May 1995. Solid symbols are wheat after wheat and open symbols are wheat after chickpeas. The results are shown in Figure 3.