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Field hockey was introduced at the Youth Olympic Games at the inaugural edition in 2010 for both boys and girls. At the 2010 Games, field hockey was held in the outdoor format. From the 2014 Games, the Hockey 5s format, a 5-a-side tournament played on a smaller-sized field, has been used.
Fertilizers are usually labeled with three numbers, as in 18-20-10, indicating the relative content of the primary macronutrients nitrogen (N), phosphorus (P), and potassium (K), respectively. More precisely, the first number ("N value") is the percentage of elemental nitrogen by weight in the fertilizer; that is, the mass fraction of nitrogen ...
A farmer can invest a large amount of money to increase his yields by a few percent, for example with an extremely expensive fertilizer, but if that cost is so high that it does not produce a comparative return on investment, his profits decline, and the higher yield can mean a lower agricultural productivity in this case. A yield is a 'partial ...
Nitrogen and potassium are also needed in substantial amounts. For this reason these three elements are always identified on a commercial fertilizer analysis. For example, a 10-10-15 fertilizer has 10 percent nitrogen, 10 percent available phosphorus (P 2 O 5) and 15 percent water-soluble potassium (K 2 O). Sulfur is the fourth element that may ...
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The EuroHockey Youth Championship is an international boys' and girls' under–18 field hockey competition organised by the European Hockey Federation (EHF). It is held biannually and is the top level Youth Championship for the under–18 age group. [1] Spain boys' and the Netherlands girls' teams are the current champions. [2] [3]
RAPM (Regularized Adjusted Plus-Minus) is a new hockey statistic based on the RAPM statistic used in basketball. Instead of tracking a player's points, it tracks a player's shots, because they occur more often than goals, which is required to give the statistic a high number of samples.