Effects of Potassium Source and Secondary Nutrients on Potato Yield and Quality in Southcentral Alaska.

Calcium (Ca), magnesium (Mg), and sulfur (S) are required for the growth and development of all higher plants. They are commonly referred to as secondary nutrients because they are less often limiting to plant growth than the primary nutrients nitrogen (N), phosphorus (P), and potassium (K), although secondary nutrients are as critical for crop growth and development as the primary nutrients. There is limited information available concerning secondary nutrient requirements of potatoes grown in southcentral Alaska. Laughlin (1966) conducted studies between 1961 and 1963 comparing potassium chloride (KCl) and potassium sulfate (K2SO4) as potassium sources for Green Mountain potatoes, and determined the effects of varying rates of magnesium sulfate (MgSO4) and K2SO4 on Kennebec potatoes. Since these studies were conducted without irrigation and at production levels about one-half those obtained by top producers in the Matanuska Valley today, it was considered appropriate to expand upon the previous work using current production practices. Potassium was supplied as KCl and K2 SO4 to explore the need for additional S under local potato production conditions and to determine the effects of the chloride (Cl) and sulfate (SO4) anions on production and quality of potato tubers. In addition, Mg and Ca were added to determine whether the background levels of these nutrients were adequate for optimum production

ANALYSIS OF ECONOMIC POTENTIAL IN SECTOR OF VITICULTURE AND ENOLOGY IN POZEGA-SLAVONIA COUNTY

Pozega-Slavonia County has a long tradition of viticulture and oenology at which it becomes ever more recognizable. Although this is the economic segment of high importance for the local economy and regional development this study has shown that there is low percentage of representation in relation to the total agriculture potential of the county. In Republic of Croatia there are counties with higher number of vineyards planted (per unit of the area) vine production in Pozega-Slavonia County shows a greater amount of products of higher quality. With the analysis of the available statistical data it has been noticed that there is room for growth of this market segment and potential of multiplier effects in the development of the local economy with additional uprising in this sector. The target of the research has been gaining an insight into the current state of the agricultural sector of Pozega-Slavonia County emphasizing on production of fresh grapes and wine. Goal was to gain perspective in correlation between viticulture and winemaking with complete agriculture situation in Pozega-Slavonia County and to compare this branch with other counties in Croatia

Soft gluon resummation for the associated production of a top quark pair with a W boson at the LHC

We present our results on soft gluon resummation in the invariant mass threshold applied to the associated production of a top quark pair with a W boson at the LHC in the Mellin space formalism.Comment: 6 pages, 4 figures, 1 table, proceedings prepared for the European Physical Society Conference on High Energy Physics (EPS-HEP 2017), 5-12 July 2017, Venice, Ital