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An experiment was carried out at the Experimental-Didactic Station in Swadzim (52°26’ N; 16º45’ E), which is part of the Poznań University of Life Sciences, in years 2006-2008. The aim of the research was to examine the effect of weather conditions on the yield of ten sugar maize hybrids. Length of growth period, yield size, first class cobs share, number of grains in the cobs, and cob length were defined. It was found that the length of growth period and weather conditions have an effect on yield size and first class cobs share. The best sugar maize hybrids for processing proved to be ‘Sweet Wonder’, ‘Rebecca’, and ‘Sweet Nugget’. The best for direct consumption were ‘Sweet Wonder’, ‘Rebecca’, and ‘Sweet Talk’.
The aim of this study was to evaluate the efficacy and herbicidal selectivity of the mixture of foramsulfuron + iodosulfuron methylosodium. The experiment was carried out cultivars of sweet corn, in 2008–2010 by Research and Education Center Gorzyn, branch Swadzim. The tested active substances showed a higher herbicidal efficacy against broad leaved weeds as compared to grass weeds. After applying the herbicide mixture the cobs yield increased and they tested ten varieties of sweet corn showed no signs of phytotoxic effects of these active substances.
The aim of this research was to evaluate the reaction of 10 varieties of sugar maize on the active substances dicamba + prosulfuron and assess the effectiveness of this mixture. An experiment was carried out at the Experimental-Didactic Station at Swadzim in 2008-2010. Ten sugar maize hybrids were studied. Spraying herbicide with crop oil concentrate was performed at the five- to six-leaf stage. A week after the herbicide application, weeds were collected and weighed. On this basis, the effectiveness of active substances was measured (%). The crop was evaluated visually in five periods on a 1-9 scale. After the plants came to milk ripeness, cob yield (t•ha-1), share of first class cobs (%), cob length (cm), number of grains per cob and cobs per hectare were defined. It was found that the average effectiveness of the herbicide was 53-60% against the three examined weed species, namely ‘Garrison’, ‘GSS 8529’ and ‘Rustler’. Transient, phytotoxic action of active substances on the three sugar maize varieties was observed. Dicamba + prosulfuron affected the growth of cob yield, share of first class cobs and cob length. The mixture had no effect on the number of grains per cob and number of cobs per hectare.
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