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The study was carried out in the years 2013 and 2014 at the Łagiewniki farm to determine the effect of some herbicides on the yield and development of two opium poppy cultivars: ‘Lazur’ – with high morphine content, and ‘Borowski Biały’ – with low morphine content. The development and yield of the poppy was a derivative of environmental and agronomic conditions. The mixture of tembotrione and fluroxypyr...
The objective of the study was to determine the effect of leaf wetness period and air temperature on development of disease symptoms caused by Puccinia recondita on winter wheat. The experiments were carried out in growth chamber at the Institute of Plant Protection in Poznan. Seedlings of a susceptible winter wheat cultivar Mikon, were artificially inoculated with urediniospores of P. recondita and...
Measurements of spectral reflectance from potato plants were carried out in the years 2000 and 2001 using the field radiometer CE 313 of Cimel Electronique Company. Field experiments permitted to perceive differences in the reflectance of electromagnetic radiation from potato plant cultivars Bekas and Mila as well as differences between the plants treated with fungicides providing the protection against...
In the field experiments performed in 1999–2001 the profitability of late blight control in accordance with three decision support systems: NegFry,Simphyt and Stephan with routine fungicide program was compared. Potato protection carried out according to the recommendations of the decision support systems guaranteed higher profitability of late blight control than when potato was protected routinely...
Two potato cultivars, sprayed and nonsprayed with fungicides, were evaluated to determine the association of late blight (caused by Phytophtora infestans) and radiometric leaf reflectance to disease development. Spectral radiance measurements were taken with CIMEL CE3132 luminancemeter in the visible (450 nm, 550 nm and 650 nm) and near-infrared (850 nm) range of the electromagnetic spectrum. The...
Colinfors is a computer aided information system dealing with protection of potato plantations against colorado beetle. The program provides information concerning colorado beetle life cycle and usage of insecticide against the pest. Moreover it enables to forecast the appearance of any pest stage on the base of degree days method.
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