around 80% of the population relies on agriculture, rice being the staple food. topography urges farmers to cultivate upland rice. the chinese interest in rubber latex has stimulated farmers to grow rubber, although the technical knowledge regarding tree management and latex processing is poor. a study was conducted in an area in luang prabang province to examine the suitability of upland rice ...

The bias against mangrove areas in siting fish farms prompted a comparison of the cost structure and yield performance in upland and mangrove locations. Tools utilized included descriptive statistics, budgetary and cash flow analyses and profitability ratios. Empirical results revealed that substantial revenue could be realized from both farms. While the upland farms yielded average gross reven...

The campaign for community forestry in upland areas of northern Thailand reflects an ‘arborealised’ perspective on upland agriculture. Arborealisation – which I define as the process whereby upland livelihoods are recast as forest livelihoods – is evident in the main elements of NGO and academic advocacy for the resource rights of upland peoples. As a result of this arborealised perspective, se...

There is lack of adequate information on the fertility situations of the soils of Abakaliki urban flood plains. Farming activities have therefore been carried out on the surrounding uplands only. This study was therefore conducted in 2009 raining seasons, to evaluate the fertility status of the flood plains and compare it with the fertility of the uplands with a view to making recommendations f...

Upland and lowland rice (Oryza sativa L.) represent two of the most important rice ecotypes adapted to ago-ecosystems with contrasting soil-water conditions. Upland rice, domesticated in the water-limited environment, contains valuable drought-resistant characters that can be used in water-saving breeding. Knowledge about the divergence between upland and lowland rice will provide valuable cues...

Although the discovery of aquaporins in plants has resulted in a paradigm shift in the understanding of plant water relations, the relationship between aquaporins and drought resistance still remains elusive. From an agronomic viewpoint, upland rice is traditionally considered as showing drought avoidance. In the investigation of different morphological and physiological responses of upland ric...

The stress-induced epimutations could be inherited over generations and play important roles in plant adaption to stressful environments. Upland rice has been domesticated in water-limited environments for thousands of years and accumulated drought-induced epimutations of DNA methylation, making it epigenetically differentiated from lowland rice. To study the epigenetic differentiation between ...

Manganese (Mn) in surface waters is a micronutrient, but elevated concentrations are toxic to fish and impair drinking water quality. In Scotland, undesirable Mn concentrations (> 0.05 mg l(-1)) occur predominantly in upland freshwaters because the acidic pH and organic nature of catchment soils favour Mn mobilisation. The relationship between upland land-use in Scotland and Mn concentrations i...