Results 1 - 10 of 2013
Results 1 - 10 of 2013. Search took: 0.026 seconds
|Sort by: date | relevance|
[en] NARC Oat is high yielding fodder variety developed at Fodder Research Program, National Agricultural Research Centre (NARC), Islamabad, during 2011. It was selected from Canadian material (cv. Scott) and evaluated in different trials for six years (2002-03 to 2007-08) with the name of 'PIN-98'. NARC Oat produced averagely 27 percent more yield of green fodder than check 'S-2000' in preliminary, on-farm/adaptation and at farmers' fields trials. It was evaluated in the National Uniform Fodder Yield Trials (NUFYTs) for three years (2004-05 to 2006-07). It recorded average green-fodder yield of 64.56 t ha/sup -1/ against check variety 'S-2000' that produced 58.16 t ha/sup -1/ having 11% more yield across 33 locations of the country. The new oats variety 'NARC Oat' was approved by the Punjab Seed Council in its meeting held on January 12, 2011. (author)
[en] Understanding the factors that determine the use of rainwater harvesting systems (RWHS) can help the correct implementation and sustainability of the system, especially in regions where this option becomes the most (and often only) feasible solution.
[en] The type of groundwater yielded from existing deep wells situated within 2km from coastal line in U-do and Sosigon area in classified as category 7, that is primarily salinity dominated by alkalises and strong acid such as saline water. The chlorine contents of the groundwater ranges from about 200 ppm to 600 ppm. Tritium, deuterium, and oxygen-18 contents of seawater are 5.74 ± 0.49 TAU, -4.6 ± 1.2 o/OH, -0.8 ± 0.02 o/OH in maximum, and 8.67 ± 0.45 TAU, -24 ± 0.18 o/OH, -3.61 ± 0.12 o/OH in case of rainwater, and 15.11 ± 0.61 TAU, -43.4 ± 1.12 o/OH, -7.2 ± 0.5 o/OH in case of pure and not affected groundwater by salt water encroachment. In general the groundwater bodies being highly affected by salt water intrusion are characterized by that content of tritium is similar or quite same with one of the pure-non affected groundwater and contents of stable isotopes are higher than those
[en] Too little water and too much water can be as devastating as well. Drought usually does not show up instantly like flood, but it creeps slowly. Drought that is less popular than flood has impact more serious than flood. It is difficult to be identified when it comes and when it goes away. However, it is suddenly understood when water becomes scare, or no more water is available in wells, rivers and reservoirs. Managing flood and drought has to be at an integrated basis. Rainwater harvesting (RWH) combined with water conservation methods can be developed to alleviate drought disaster as well as flood disaster in the same time. RWH and water conservation must be an integral part of integrated water resources management. Preventing drought could be automatically reducing the extent of flood that means preventing people and the environment from the disasters. (author)
[en] The knowledge of raindrop size distributions is of great interest to cloud physicists radar meteorologists and communication engineers. Beginning from the Winter 1986-87, the Precipitation Group of the Atmospheric Physics Institute installed on the roof of the Institute building in Roma-Eur a disdrometer RD-69. The sensor is an electromechanical device with surface of 50 cm2 able to measure the raindrop diameter with a precision of 5% and a resolution (delay between two drops hitting the sensor) of one millisecond. After the calibration, significant precipitations were recorded continuosly, with a sample period of 1 minute, during the whole life of the storms. It can be expected that a knowledge of the drop size distributions, and in particular of the differences between distributions, can be used to infer details of the storm and the environment. In the work the first results of the analyses are presented. Particular attention was conferred to the variation characteristics of the precipitation type (thunderstorm and widespread) as well as to the variations of the distributions in short time intervals, that may be caused by different effects, for example the growth and decay of a precipitation cell or the movement of a cell combined with the different fall velocities of small and large drops