[Influence of different doses and the means of introducing microfertilizers on the hop yield (Humulus lupulus)]
2008
Milosta, G.M. | Regilevich, A.A., Grodno State Agrarian Univ. (Belarus)
Microelements render essential influence on the yield of hop cones. Soil entering of microelements had no advantages before their foliar application. Studied microelements (boron, copper and zinc) on a degree of their influence on growth of the yield of hop cones and weight of 100 cones can be arranged in the following order: ZnBCu. Application of zinc microfertilizers into soil or by foliar application provides reception of a steady and essential increase of the yield of hop cones. The maximal yield of hop of late sort (H. Magnum) is provided by adding zinc (Zn(0,15+0,15+0,15)) or simultaneously adding both boron and zinc by the foliar method (B(0,1+0,1+0,1)Zn(0,1+0,1+0,1)) against the background of organic and mineral fertilizers (30 tons per one hectare of organic fertilizers + N180P120K160). Thus it is marked that synergic interaction of these elements on their influence on these parameters. On a degree of influence on formation of leaf mass of hop all studied microelements can be arranged in the following order: CuBZn. At zinc application the yield both cones and leaf mass of hop increases but zinc influences on current of physiological processes so, that accumulation of mass of generative organs (cones) goes quicker than at vegetative – leaf mass. Copper, on the contrary, promotes advancing growth of vegetative mass. Joint application both zinc and boron renders positive influence on increase in a share of cones, and zinc with copper, on the contrary, promotes its decrease concerning leaf mass. In variants with copper application accumulation of leaf mass of hop goes advancing rates concerning increase in the area of the given leaf mass. Leaves in these variants are formed thicker, heavy and have dark green color. At boron application, on the contrary, formation of leaf surface goes with higher rates concerning accumulation of leaf mass
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