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

Etymology

Between

Effect of Legumes on Soil Mineral Nitrogen and Response of Potatoes to Nitrogen Fertilizere legumes were grown, oats was grown as a reference crop. The effect of the legumes on nitrogen fertilizer requirement and yield of the subsequent potato crops was studied. To obtain an estimate of the amount of nitrate which may leach out, the study included measurements of soil mineral nitrogen..B

Postmenopause

The Role of Cyst Nematodes in Crop Rotations in Potatooblem remaining in the soil in the absence of a host crop. Damage to host plants can be considerable and is related to the initial nematode population density. Reproduction is also dependent on initial population density and when at low levels, multiplication can be very great. Rotational gaps of so

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Significance of Crop Rotation and Cultivars Resistant to Potato Cyst Nematode on Potato Productional Experimental Station in northern Poland from 1973 to 1987. Potatoes were grown in a 5 year crop rotation (1/5) and the results were compared to continuous cropping of potato. At the beginning of the experiment a very low soil infestation with . was found. In the fifth year of continuous cropping,

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The Role of Crop Rotation Systems on Non-Cyst Nematodes Affecting Potatoes in the Temperate Zonesthe potato cyst nematodes, . and .. Of the non-cyst nematodes (NCN), the potato rot (.), root-lesion (.), root-knot (. spp.) and stubby-root (. and . spp.) nematodes are most important. Literature on NCN problems in potato production, of which the occurrence or effect depends on crop rotation system

門窗的側(cè)柱

Bacteria and Potatoes in Crop Rotation Systemsyield. The bacteria involved may be classified into three groups: plant pathogenic bacteria, growth inhibiting or deleterious bacteria, and growth promoting bacteria. Since the complex dynamics of bacteria in the soil may be affected by the presence or absence of specific plant species, crop rotatio

過于光澤

Cyanide-Producing Rhizosphere Pseudomonads: A Factor Limiting Potato Root Growth and Tuber Yield in lder, were investigated. Besides . spp. and ., another bacterial factor seemed to be involved. The mechanisms by which this bacterial factor limits potato root growth and tuber yield and the mechanisms of its counteraction by the plant growthpromoting . strain WCS358 were analyzed. Based on experime

obstruct

Increase of Potato Tuber Yields in Short Rotations of Potato by Seed Tuber Treatments with Fluoresceerlying these yield increases seems to be siderophore-mediated competition for ferric iron between the applied bacteria and deleterious rhizobacteria. Yield increases by fluorescent . spp. strains under field conditions are variable. Explanations for this variability and possibilities to improve the

Proponent

揮舞

Incidence of Soilborne Potato Pathogens in Six Crops used in Rotation with Potatoes 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