Abstract
he studies on maize production as affected by green manuring and fertilization were carried out at the Agronomic Research farm, University of Agriculture,
Faisalabad during the year 1988. A quadruplicated experiment was laid out in a randomised complete block design. The treatments comprised control, green manuring
only, full fertilizer dose (150-100 kg NP ha-I
),green manuring + fertilizer (!.ith N +
full P), green manuring + fertilizer (~ N + full P) and green manuring + full dose
ofN and P.
Guara was sown as a green manuring crop in the second week of May and burried in the first week of July. Maize variety UM-81 was planted in the second week
of August. Various yield components were influenced significantly by green manuring and fertilizer application, alone or in combination and remained superior in
performance over control. Whereas the maximum economic returns in the form of
net income were recorded in case of treatment where ~ of recommended dose of N
fertilizer alongwith full P was applied on a green manured field. This revealed that
green manuring can substitute 50% N requirement and can bring increased economic returns in addition to having long term effects on the physical fitness of soil
by adding sufficient organic matter into the soil.
