Studies reported herein were undertaken to obtainsoma fm1damental information on developmental physiologyof red clover. Effect of light intensity and daylenBth,critical daylength for flowering, photoperiodic induction,and translocation of the photoperiodic stimulus were studied in clonal lines selected from the Dollard variety.Methods of cloning were also studied. [...]

The effect of genetic diversity on the combining ability of eight inbred lines of corn was investigated using 16 single and nine double crosses. Single crosses combining two dent or two flint inbreds were not significantly different from those combining a dent and a flint. [...]

There exists today in Eastern Canada an estimated fourteen million acres of pasture land, of which a large proportion remains at a law level of production. The growing recognition that grass is a crop has given added stimulus to pasture improvement, its development and utilisation. Where the live stock farmer predominates, in an area in which forage species are adapted, much importance is attached to grassland resources as the cheapest source of feed. Under this situation, which prevails in Eastern Canada, the value of sound• pasture management, and the need for further knowledge of the principles upon which such a system may be attained, cannot be overemphasised.

Livestock farmers in New Brunswick, in common with other livestock farmers, depend upon pasture to provide the bulk of the nutrients required by livestock during the summer months. Approximately one-sixth of the total occupied agricultural land in New Brunswick is devoted to pasture, a fact which makes its importance quite obvious. Notwithstanding its importance a large proportion of this pasture area has low productivity. [...]

Studies on problems of early maturity in plants have engaged the active interest of geneticists and plant breeders for many years. The value of such studies has been emphasized by the importance of developing varieties or strains of plants early enough in maturity to satisfy certain practical demands. Corn varieties or hybrids adapted to regions of low heat unit accumulation such as areas in the humid, microthermal climate north of the Corn Belt, must be extremely early in maturity.

Red claver (Trifolium pratense L.) and birdsfoot trefoil (Lotus corniculatus L.) are entomophilous cross-pollinated species classified in the natural order Leguminoseae. The former is a biennial or short lived perennial with a diploid chromosome number of 2n = 14; the latter is a perennial with a tetraploid chromosome number of 2n = 28 and is thought to be an autotetraploid because it exhibits tetrasomic inheritance (Bubar, 1957). They are known to have incompatibility systems precluding close inbreeding and are almost completely self-sterile. Timothy (Phleum pratense L.) is an autohexaploid (Nordenskiold, 1953) with 48 chromosomes.

Red clover, Trifolium pratense L., belongs to the family Leguminosae. It is one of that group of plants called the legumes which are so important, in agriculture especially when the feeding of animals is the major enterprise. Here the legumes excel, not only because of the superior forage which they are capable of producing, but also because of their ameliorating effects on the soil. Red clover is a very worthy member of this group of plants and according to Clark and Malte (1913) "no other forage plant has been so important to agriculture as has red clover."

The current trend towards more specialisation and mechanisation in farming practices in the province of Quebec poses the need for assessing the effects of management on the organic matter status of the soil. Such information is usually obtained from long-term manurial experiments requiring from ten to twenty years. To be of practical value, however, this assessment should be done more rapidly than is possible by the above-mentioned method. The purpose of this investigation, therefore, was to assess as rapidly as possible the affect of management on the organic matter status of a soil type common in the province of Quebec.

Four sites of the St. Bernard loam soil type, subjected to differing intensities of cultivation, were investigated for total, organic, adsorbed and exchangeable phosphorus, and anion exchange capacity, as well as the number of samples required for effective sampling. Results indicated that organic phosphorus content decreased with increasing number of years under cultivation. The effect of the different management systems on total, adsorbed and exchangeable phosphorus, and anion exchange capacity was also discussed.

Red clover, Trifolium pratense L., is a member of the Leguminosae family. It is one of the most important seeded legumes used in the province of Quebec, in both hay and pasture mixtures. Breeding work with red clover began early in the twentieth century, and Steppler (1955) reported that work of this nature was initiated at Macdonald Collage in 1911. Red clover is a cross-pollinated species and is entomophilous. It is highly self-incompatible, as determined by a series of s-alleles through which the plants are maintained in a constant state or heterozygosity.