Syysviljojen talvituhosienien torjunta PCNB:llä

Authors

• Yrjö Pessi Rikkihappo Oy, Helsinki
• Mikko Ylänen Rikkihappo Oy, Helsinki
• O. E. Savas Rikkihappo Oy, Helsinki
• M. Nieminen Rikkihappo Oy, Helsinki
• Auvo Leskelä Rikkihappo Oy, Helsinki
• Jorma Syvälahti Rikkihappo Oy, Helsinki

DOI: https://doi.org/10.23986/afsci.71759

Abstract

In the tests on the Kotkaniemi Experimental Farm at Vihti in 1966—69 PCNB-treatments in most cases gave considerable increases in grain yields of rye and winter wheat. In addition to customary treatments, research has been carried out the possibility of reducing the loss of PCNB in rains in the autumn by using a fixing material. The results of the tests are negative, however. The spreading of 50 % PCNB-spray powder, containing ammonium sulphate as filling material, on the loose snow or the placement of PCNB with a fertilizer under the snow in early winter has in the preliminary tests given as good results as spreading before the fall of snow. The results indicate that the time of the PCNB-treatment may safely be postponed to a later date than is customary at present.