[Dependence of hop (Humulus sp.) productivity on boric, cupric and zinc microfertilizers]
2007
Milosta, G.M. | Regilevich, A.A., Grodno State Agrarian Univ. (Belarus)
In research conducted on sod-podzolic sandy soil spread by loam in the western Belarus it is established. It is marked that the maximum productivity of hop (variety Hallertauer Magnum) is provided under soil zinc application (Zn3.0) and copper microfertilizers (Cu 3.0) and not root application - copper (Cu 0.15+0.15+0.15), zinc (Zn 0.15+0.15+0.15) or jointly boric with zinc - (B 0,1+0,1+0,1) Zn (0,1+0,1+0,1) on the optimum background organic (30 t/hectares) and mineral fertilizers (N180P120-180K160-240). Copper microfertilizers increase harvesting of alpha acids from an area unit basically due to increase in the content of alpha acids in hop cones, zinc – due to growth of their productivity. Trace elements on degree of their influence on the content of alpha acids in cones it is possible to arrange in the following order: СuВZn, and on degree of their influence on the increase in productivity of cones of hop - ZnBCu. It is established that joint application of copper with zinc has not advantages in comparison with separate application of these elements. It occurs because of their antagonistic interaction. Joint application of these elements gives less increase in yield. Boron efficiency is significantly increased in its application jointly with zinc
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