“This $100,000 donation by Shell Oil Company is the first major donation to the Pennsylvania 4-H science program,” said Deb Dietrich, 4-H extension educator based in Berks County and chair of the Pennsylvania 4-H Science Team. 4-H boosts science interest The annual Pennsylvania 4-H Scie...
C.: 2002b, ‘Nitrate leaching and pasture production from different nitrogensources on a shallow stony soil under flood irrigated dairy pasture’, Aust. J. Soil Res . 40 , 317–334.Di, H.J., Cameron, K.C. 2002 Nitrate leaching and pasture production from diff...