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Effects of Cubitermes testaceus (Williams) on some physical and chemical properties of soil in a grassland area of Uganda
Author(s) -
OKWAKOL MARY J. N.
Publication year - 1987
Publication title -
african journal of ecology
Language(s) - French
Resource type - Journals
SCImago Journal Rank - 0.499
H-Index - 54
eISSN - 1365-2028
pISSN - 0141-6707
DOI - 10.1111/j.1365-2028.1987.tb01101.x
Subject(s) - topsoil , organic matter , forestry , grassland , soil water , mineralogy , potassium , geography , chemistry , environmental science , soil science , agronomy , biology , organic chemistry
Summary The physical and chemical properties of Cubitermes testaceus (Williams) mound and adjacent topsoils and subsoils were studied at Kaazi, southern Uganda, by collecting and analysing soil samples. Differences between clay and sand fractions of mound and non‐mound soil were slight. The colour of the mounds indicates that mound soil is derived from adjacent topsoil. Values for organic matter, total nitrogen, pH, calcium potassium and sodium of mound soil were significantly greater than those of adjacent topsoil, indicating that the termites altered the soil chemistry. Results obtained show clearly that Cubitermes testaceus significantly affect the chemical properties of soil but only slightly affect physical ones. It is suggested that the most significant effect of these termites on grassland soils in Uganda is the alteration in the quantity and distribution of organic matter and mineral nutrients. RÉSUMEÉ Les propriétés physiques et chimiques des termitières de Cubitermes testaceus (Williams) et des sols superficiels adjacents ont étéétudiées a Kaazi, dans le sud de l'Uganda, par la collecte et l'analyse d'échantillons. Les différences entre les fractions argileuses et sableuses des sols de termitières et d'autres sols sont faibles. Les couleurs des termitières indiquent que le sol provient du sol superficiel adjacent. Les voleurs des matières organiques, nitrogène total, pH, calcium, potassium et sodium des termitières sont significativement supérieures que celles du sol superficiel adjacent, ce qui indique que les termites altèrent la composition chimique de celui‐cu, Les résultats obtenus prouvent clairement que Cubitermes testaceus affectent significativement les propriétés chimiques du sol, mais que les propriétés physiques ne sont que légèrement altèrèes. Il est suggéré que l'effet le plus significatif de ces termites sur les sols herbeux en Uganda est l'altération de la quantité et de la répartition de la matière organique et des nutriments minéraux.

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