Reference

The effect of nitrogen and of controlling Pratylenchus penetrans with nematicides on the growth of raspberry (Rubus idaeus L

The effect of nitrogen and of controlling Pratylenchus penetrans with nematicides on the growth of raspberry (Rubus idaeus L.). Trudgill, D. L. (Scott. Crop Res. Inst., Dundee DD2 5DA, UK). Crop Res., 23(2), 103-12 (English) 1983. CODEN: CRREE6. ISSN: 0264-3049. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 19 P. penetrans Was shown in a pot expt. to be damaging pest of raspberry, plant growth being neg. correlated with initial nematode d. In 5 replicated field trials, preplanting treatments with aldicarb [116-06-3] and dazomet [533-74-4] controlled P. penetrans and improved the 1st year growth of raspberry at heavily infested sites. At 4 of the sites treatment with dazomet produced a greater increase in cane growth than treatment with aldicarb, and at 1 of these 4 sites addnl. treatments with 3 rates of N indicated that mineralization of org. N was not entirely responsible for this difference. At sites heavily infested with P. penetrans, dazomet and aldicarb increased cane growth more than at lightly infested sites, where there was an indication that aldicarb might be slightly phytotoxic to raspberry. Surveys indicate that P. penetrans is widely distributed in the raspberry growing areas of eastern Scotland and within planting material, and thus, this nematode is a serious pest of raspberry in these areas.

Effect of some biocides on soil exhaustion in apple trees and on the microflora of exhausted soils

Effect of some biocides on soil exhaustion in apple trees and on the microflora of exhausted soils. Otto, Georg; Winkler, Harry (Inst. Obstforsch., Akad. Landwirtschaftswiss. DDR, Dresden DDR-8057, Ger. Dem. Rep.). Zentralbl. Mikrobiol., 138(5), 337-43 (German) 1983. CODEN: ZEMIDI. ISSN: 0232-4393. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Soil exhaustion (soil sickness), attributed at least partially to actinomycetes which penetrate and colonize fibrous roots of apple, was relieved by Dazomet [533-74-4] and Metham Na [137-42-8]. Soil bacteria counts were increased by both materials. Addnl., growth of apple seedlings was significantly enhanced by Dazomet and Metham Na at 80 and 150 g/m2, resp., in comparison to growth in sick soil.