Influence of Fundamental Agro-Factures on the Dynamics of Growth and Leavegrowth under Oriental Tobacco Variety Krumovgrad 944 I. Stamatov, A. Yancheva | Влияние на основните агрофактори върху динамиката на растеж и листообразуване при ориенталския сорт тютюн Крумовград 944
2013
Stamatov, I., Experimental Station of Tobacco, Haskovo (Bulgaria) | Yancheva, A., Experimental Station of Tobacco, Haskovo (Bulgaria)
Agriculture farming scheme strongly influences the development of oriental tobacco throughout vegetation. In the period 2009 – 2011 it was based complex agronomic experience with three densities of planting and three norms of mineral fertilization with combined fertilizer NPK 15.15.15. The rate of positive fertilization effect on plant height and number of leaves formed during active plant growth. The resulting correlations were demonstrated in degrees of freedom 0.01. Increasing food area also has a positive impact on the dynamics of growth and leaf-formation, correlation odds are not statistically proven. Nitrogen fertilization is a critical element in the fertilization, which most directly and strongly influences the development of economic and technological-chemical characteristics of oriental tobacco. Increasing nitrogen fertilization from 0 to 20 and 30 kg/ha in pure substance increases the size of the leaves of all stem positions.
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