Wyniki wyszukiwania:

There is no question that climate change during the last century has had a significant impact on winter hydrology in Ontario, Canada. On the basis of data from 13 climatological stations from across Ontario, Canada, for the last 70 years of record, time series for a number of winter temperature variables revealed steady and significant upward trends. There were no significant trends in the time series of total winter precipitation; however, winter rainfall revealed increasing trends and winter snowfall revealed decreasing trends. Correspondingly, winter rainfall as a percentage of total...

The studies carried out on the role of honey bee (Apis mellifera) in hybrid seed production of Brassica campestris showed the highest number of pollen and nectar collectors of Apis mellifera and were recorded 45.6 and 24.6 per square meter crop area of B campestris respectively during day hours of 12.00 to 2.00 pm, which were significantly greater than the rest of foraging observations. In bee pollinated plants, the number of pods per plant, number of seeds per pod, number of seeds per plant, seed yield per plant and weight of 1000 seeds in BP plants were about 1.3, 1.1, 1.44, 1.53 and 1.62...