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Effects of poultry manure and mineral fertilizers on the yield of crops

Published online by Cambridge University Press:  27 March 2009

L. Giardini ,
F. Pimpini ,
M. Borin  and
G. Gianquinto
L. Giardini
Affiliation:
Istituto di Agronomia generale e Coltivazioni erbacee, Università di Padova, Via Gradenigo, 6 – 35131 Padova, Italy
F. Pimpini
Affiliation:
Istituto di Agronomia generale e Coltivazioni erbacee, Università di Padova, Via Gradenigo, 6 – 35131 Padova, Italy
M. Borin
Affiliation:
Istituto di Agronomia generale e Coltivazioni erbacee, Università di Padova, Via Gradenigo, 6 – 35131 Padova, Italy
G. Gianquinto
Affiliation:
Istituto di Agronomia generale e Coltivazioni erbacee, Università di Padova, Via Gradenigo, 6 – 35131 Padova, Italy
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Summary

Experiments at the Experimental Station of the Agricultural University of Padova, Italy (45° 21′ N, 11° 58′ E) during 1985–89 evaluated poultry manure as a fertilizer. Two levels of fertilization (medium and high), using different mixtures of poultry manure and mineral fertilizers were compared with a non-fertilized control. The fertilization treatments were repeated each year on the same plots. All the crops tested responded strongly to fertilization, giving the following increases in yield (expressed as a percentage of the maximum yields): 30% for potato (Solanum tuberosum L.), 19% for sugarbeet (Beta vulgaris L. var. saccharifera L.), 82% for onion (Allium cepa L.), 85% for tomato (Lycopersicon esculentum Mill.) and 64% for spinach (Spinacia oleracea L.). The most effective fertilization formula varied with crop and year of cultivation. All the tested fertilization treatments had a similar effect on potato and onion, whereas the highest yields of tomato and spinach were obtained with a mixed fertilization at the highest rate of nutrients.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 118 , Issue 2 , April 1992 , pp. 207 - 213
Copyright
Copyright © Cambridge University Press 1992

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References

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