EFFECT OF DIFFERENT LEVELS OF ORGANIC MANURES ON SOME SOIL CHARACTERISTICS

Document Type : Research articles.

Author

Dep. of Horticulture, Faculty of Agriculture, Al-Furat, University, Syria.

Abstract

The experiments were conducted in Agricultural Scientific Research Center
in Al-Raqqa in Syria as spring season, using three manures (cow manure, olive
solid waste, and peanut compost) with four levels (25-50-75-100) ton/ha for
two years (2006-2007) as spring season using potato (Draga variety).
The obtained results showed the degree of divergence between kind of
manures for characteristics (plant, soil), was vast on the first year of use
manures. However, the opposite was recorded at the second year (accumulative
effect). Increasing of level manures produced greater values of EC (soil
salinity), OM (organic matter), and lower pH of the soil. It’s preferrable the use
of cow manure firstly, peanut compost at the second, olive solid waste at the
end, for the best productivity and soil characters by using moderate level for
productivity, and high level for soil characters. At the same time the use of low
and moderate level of manures yearly, and the high level alternately.

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