The soybean aphid (Aphis glycines Matsumura) is an economically significant pest in North America, causing extensive damage to soybean crops through direct feeding damage and disease transmission. If unchecked, this pest could cause billions of dollars of damage to soybean crops. Identification of the soybean aphid can be difficult due to its small size, complex life cycle and morphological pla...

Bolinder, M. A., Angers, D. A., Bélanger, G., Michaud, R. et Laverdière, M. R. 2002. Root biomass and shoot to root ratios of perennial forage crops in eastern Canada. Can. J. Plant Sci. 82: 731–737. Shoot to root ratios (S:R) at peak standing crop are commonly used to estimate the annual crop residue C inputs to the soil from the root biomass left in the soil at harvest. However, root biomass ...

A description of Kentucky's land base indicates that of nearly 15 million acres suitable for cropland usage, approximately three-fourths bas an erosion hazard potential of some degree, relating largely to steepness of slope (1). For this reason, there is a large potential acreage of alfalfa and other perennial forage crops relating to their sod forming growth habit which provides them an inhere...

Milk yield per cow has more than doubled in the previous 40 years and many cows now produce more than 20,000 kg of milk per lactation. The increase in production should be viewed with concern because: i) the increase in milk yield has been accompanied by declining fertility, increasing leg and metabolic problems and declining longevity; ii) there are unfavourable genetic correlations between mi...

Biofuel crops, including annuals such as maize (Zea mays L.), soybean [Glycine max (L.) Merr.], and canola (Brassica napus well high-biomass perennial grasses miscanthus (Miscanthus × giganteus J.M. Greef & Deuter ex Hodkinson Renvoiz), are candidates for sustainable alternative energy sources. However, large-scale conversion of croplands to biofuel crops could have substantial impacts on regio...

Genetically Modified Organisms (GMO) could be the answer for many relevant problems affecting crops. However, improving crops through GMO is also often associated with safety concerns, environmental risks and health issues due to the presence of foreign DNA. These limitations have prompted the development of alternative technologies. Recently, cisgenesis and intragenesis have been developed as ...

Plant Parasitic Nematodes are small worm like transparent, bilateral symmetry, pseudocoelomate, multicellular, free living or parasitic microorganism which predatory, aquatic, terrestrial, entopathogenic, ectoparasite, endoparasite, semi-endoparasite sedentary. They cause substantial problems to major crops throughout the world, including vegetables, fruits, and grain crops. The root knot cyst ...

Environmental crisis in the rural areas of developing countries is increasingly becoming an important cause of cross-border migration of population and South Asia is no exception to this phenomenon. Such movement of population in the Indo-Bangladesh context is generating a range of destabilising socio-political, economic, ethnic and communal tensions in India. It has embittered Indo-Bangladesh ...