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Effects of compost and
green manure of pea and their combinations with chicken
manure and rapeseed oil residue on soil fertility and
nutrient uptake in wheat-rice cropping system
Amanullah Khan Eusuf Zai*, Takatsugu Horiuchi and Tsutomu
Matsui
United Graduate School of Agricultural Science, Gifu
University, Gifu, 501-1193, Japan.
*Corresponding author.
E-mail:
amaneuzai@yahoo.com.
Accepted 3 August, 2008 |
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Farmers use
huge chemical fertilizers for cereal production, which
causes health and environmental hazards. Adoption of legumes
in cereal based cropping systems and improvement of organic
fertilizers are needed to reduce chemical fertilizer use.
Pot experiments were carried out with compost and green
manure of pea plant residue with dried chicken manure and/or
rapeseed oil residue to find out effects of compost and
green manure on soil fertility and nutrient uptake by wheat
and rice. Pea residue was mixed with chicken manure or
rapeseed oil residue or half of chicken manure plus rapeseed
residue or nothing was mixed for composting and green
manuring for wheat. We also examined the residual effects of
the fertilizers on rice. Composts of pea residue with
chicken manure and chicken manure plus rapeseed residue
enriched soil with N, P, K and other nutrients, and
increased nutrient accumulation. Higher values were found
for compost than for green manure but green manure with
rapeseed residue also supplied higher residual nutrients and
improved uptake and yield components. Rapeseed residue
released nutrients slowly but chicken manure was efficient
and stimulated the former when they were mixed. Pea compost
with chicken manure or chicken manure plus rapeseed oil
residue is recommended to improve soil fertility for wheat
and rice.
Key words:
Chicken manure, compost, green manure, rapeseed oil residue,
soil fertility improvement. |
