Organic (ecological, biological) agriculture in Ukraine, though having a great potential, is at present only at the initial stage. This early development of organic farming in Ukraine is distorted by the current dominant focus on export production of organic grain on large-scale farms, while the conversion of small and middle-sized farms and production of other crops remains a subordinate activ...

Plantation agriculture is more than 400 years old and contributes to the regional and national economies in many tropical countries. This paper reviews some of the main environmental issues related to plantation agriculture with perennial crops, including soil erosion, soil fertility decline, pollution, carbon sequestration and biodiversity. Soil erosion and soil fertility decline are of concer...

About NUTNET NUTNET is a network that aims to improve the management of soil fertility in Africa. It is a partnership of fifteen organisations from six African and two European countries: About Enhancing soil fertility in Africa: from field to policy-maker (NAGREF) from Greece. It is funded by the International Cooperation for Development (INCO) programme of the European Union, which links ongo...

Nitrogen (N)-fixing species have a function to enrich N in soil. Mixing N-fixing shrub species into poplar stands can be assumed as a measure to increase productivity while improving soil fertility. To verify this assumption and to understand the temporal influences of N-fixing shrub species mixed into poplar plantations on soil fertility, we investigated selected soil chemical and microbial pr...

One of the main European agricultural problems is the decline in soil fertility due to the reduction of the natural soil harmony. When natural soil composition is altered, few cultivated plants replace spontaneous populations of numerous species. Man becomes the only regulator of a new fragile equilibrium between the simplified biocenosis elements. Agronomic techniques (fertilisation, irrigatio...

soil samples from the jakara irrigation project site were evaluated with respect to possible degradation caused by irrigation. most of the soils were neutral to alkaline with ph values ranging between 6.58 + 0.04 and 10.45 + 0.03. the electrical conductivity ranged from 0.3 + 0.01 to 75.2 + 0.06 dsm-1 which implies low to very high salinity. the concentrations of the exchangeable cations in the...

This study had three main objectives: (1) to evaluate the aboveground biomass and volume yield of three unrelated hybrid poplar clones in 9 year-old riparian buffer strips located on four farms of southern Québec, Canada; (2) to compare yield data at 9 years with previous data (at 6 years); (3) to evaluate how soil fertility, measured using three different soil testing methods (soil nutrient st...

In silviculture, mineral fertilization is necessary to supply the nutritional demand, however, recommendation of quantities be applied should aim at maintaining productive capacity soil. The purpose this study test whether increasing recommended fertilizer dose improves soil fertility and increases productivity Eucalyptus dunnii in sites central region Pampa biome, Brazil. doses 150 g (T0), 225...