منابع مشابه
Can cover crops reduce leafhopper abundance in vineyards?
economi(about 15%) ) was rarely mechacally important and the nisms leading to reduction were not clear. For example, l , there numwere few differences f in the berr off leafhopperr predators or parasitoids on i the vines in cover cropped versus no coverr sigplots. However, r, there were differnificant between-treatment ences in vine growth. Plots with seasonwide maintenance off a cove...
متن کاملLegumes Can Increase Cadmium Contamination in Neighboring Crops
Legumes are widely used in many cropping systems because they share their nitrogen fixation products and phosphorus mobilization activities with their neighbors. In the current study, however, we showed that co-cultivation with legumes increased cadmium (Cd) contamination in the adjacent crops. Both field and mesocosm experiments indicated that legumes increased Cd levels in edible parts and sh...
متن کامل[Monitoring of lettuce crops of Ribeirão Preto, SP, Brazil].
The ingesting of raw vegetables plays an important role in the transmission of several infectious diseases due to the high frequency of irrigation with wastewater. The objective of this study was to evaluate the sanitary conditions of all lettuce producing crops in Ribeirão Preto through microbiological and parasitological analysis of both irrigation water and lettuce together with the implanta...
متن کاملCover Crops in Sustainable Food Production
Cover crops are important components of sustainable agricultural systems. They increase surface residue and aid in the reduction of soil erosion. They improve the structure and water-holding capacity of the soil and thus increase the effectiveness of applied N fertilizer. Legume cover crops such as hairy vetch and crimson clover fix nitrogen and contribute to the nitrogen requirements of subseq...
متن کاملStreptomycin Applications to Control Walnut Blight Disease Can Prevent Fertilization and Increase Fruit Drop
We investigated the basis for fruit drop in walnut (Juglans regia L.) following bloom period applications of streptomycin as a potential control treatment for walnut blight, a bacterial disease incited by Xanthomonas campestris pv. juglandis (Pierce) Dye. Experiments were conducted on streptomycin-treated field plots of ‘Vina’ walnut. Four streptomycin treatments were applied at different times...
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ژورنال
عنوان ژورنال: California Agriculture
سال: 1997
ISSN: 0008-0845
DOI: 10.3733/ca.v051n01p15