Table 2: Chemical composition of Lablab green manure used at Samaru in 2010-2011 and 2011-2012.

Chemical composition2010-20112011-2012

Total nitrogen (g kg−1)36.635.7
Total phosphorus (g kg−1)5.56.1
Potassium (g kg−1)10.812.0
Calcium (g kg−1)10.310.6
Carbon (%)48.849.7
C : N ratio1314
Dry matter (g kg−1)456.5460.5

Source: analyzed green manure sample at Soil science Department’s laboratory, A.B.U., Zaria.