Fertilization can affect vegetation dynamics and natural grassland diversity. This study evaluated the vegetation dynamics of a natural grassland 16 years after the initial fertilization, discussing the long-term effects of addition of triple superphosphate (TP) or Gafsa rock phosphate (RP)...

In the Andes, little is known about the relationships among current land uses and their effect on soil fertility. Corn (Zea mays L.) was used to evaluate soil quality for plant growth on soils of four land uses, along an expected gradient of fertility: native forests (Nf) > pastures (Pa) > ...

In very weathered soils, the temporary phosphorus immobilization by soil microbial biomass (SMB) could be a mechanism to reduce P adsorption. This study was carried out to evaluate the microbial phosphorus (Pm) content fluctuation in a Hapludalf under natural pasture with cut off and exotic forage...

Due to low fertility of the soils and its botanical composition, natural pastures of Rio Grande do Sul State, Brazil, present reasonable forage productivity in the Spring-Summer and low productivity in Autumn-Winter seasons. Alternatives to improve these systems are soil fertilization, correction...

Efforts to overcome declining soil fertility on smallholder farms in western Kenya must be consistent with the reality of low utilization of inorganic fertilizers. Likewise, organic inputs alone cannot supply adequate nutrients. The use of two organic resources, Tithonia diversifolia (tithonia) and ...

In greenhouse trials at a site 1200 m a.s.l. with a mean annual temperature of 24°C, young P. ligularis plants were grown either in soil inoculated with Acaulospora foveata, A. longula or Glomus occultum or in soil with endemic mycorrhizas. Half the soil in each treatment was sterilized initially....

A factorial experiment was established in a plantation of Eucalyptus nitens in southern Tasmania on a site which had formerly carried native eucalypt forest. Before planting, the site had been cleared of weeds with foliar translocated and pre-emergence herbicides. The first factor of the experiment ...

Slash pine (Pinus elliottii) was grown in central Louisiana under 4 levels of culture, each with or without repeated sprayings of triadimefon to protect against fusiform rust (Cronartium quercuum f. sp. fusiforme [C. fusiforme]). The 4 cultural treatments were: control (no weed control or...

In field trials on a highly P-fixing mollic Andosol at La Compañia, Nicaragua in May-Oct. 1987, P. vulgaris on plots infested with Amaranthus spinosus, Bidens pilosa, Eleusine indica, Euphorbia heterophylla and Melampodium divaricatum, was given 0 or 50 kg P₂O₅/ha as triple superphosphate (TSP)...