Titlebook: Effects of Crop Rotation on Potato Production in the Temperate Zones; Proceedings of the I J. Vos,C. D. Loon,G. J. Bollen Conference procee

過份

https://doi.org/10.1007/978-3-658-08208-6 grown in rotation with potatoes. Legume crops had significantly higher incidence of ., and . than the gramineaceous crops. Peas had the highest incidence of . and ., though low levels of these pathogens were isolated from all crops. . was isolated more frequently from soybeans than from clover, rye

Saline

BURSA

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蕁麻

cajole

Results of Twenty-Four Years of Crop Rotation Research at ‘De Schreef’ Experimental Sitea clay loam soil. When potatoes were grown once every three years, every four years and every six years, the tuber yields were respectively 21, 16 and 7% lower than those of plots where potatoes were grown for the first time. Although the yield depression can partly be explained by differences in so

REIGN

Twelve Years of Continuous Cropping and Short Rotations of Potato at the ‘PAGV1’ Experimental Sitebiological soil fertility on a marine loam soil in Lelystad. From 1981–1984 the net yield of potato cv. Saturna in a two-course crop rotation with sugar beet (soil fumigated every two years) was 97% of the yield of potatoes in a three-course crop rotation (soil not fumigated). With additional organi

Engulf

Relative Performance of Potato Cultivars in Short Rotationsuence of fungal pathogens, several potato cultivars were used from 1981 to 1983: cultivars tolerant to . and immune to the . spp. that cause netted scab (I), cultivars intolerant to . and immune to . spp. (II) and cultivars intolerant to . and susceptible to . spp. (III). In the experiment at De Sch

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