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[en] 179 abstracts are presented but only 91 of them are in INIS scope and are treated separately. The content is indicated in the headings of the 12 working groups: food irradiation; radiation induced stimulation effects in living organisms; tracer techniques in animal sciences; physical methods; soil-plant relationships; applied mutagenesis; environment pollution; energy in agriculture; genetical methods in pest control; radioisotopes in insect ecology. (qui)
[en] The article indicates the importance of using nuclear techniques in agricultural research and its development and the role the Agency has played since it was founded in 1957. Also the activities and achievements of the six sections that comprise the joint FAO/IAEA Division. In addition to a future look at the use of nuclear techniques in agricultural applications
[en] Comparison of furrow and trickle methods of irrigation to know their relative efficiency with respect to water applied and fertilizer used on tomatoes, cauliflower and lettuce as test crops using canal water, showed a significant saving of about 44 and 41 per cent respectively for irrigation water and fertilizer applied with trickle as compared to furrow irrigation. Trickle irrigated crops also showed a better response as regards the rate of survival, crop growth and time of maturity
[en] A field experiment was conducted to study the effect of crop residues and tillage practices on BNF, WUE and yield of mungbean (Vigna radiata (L.) Wilczek) under semi arid rainfed conditions at the Livestock Research Station, Surezai, Peshawar in North West Frontier Province (NWFP) of Pakistan. The experiment comprised of two tillage i) conventional tillage (T1) and ii) no-tillage (T0) and two residues i) wheat crop residues retained (+) and ii) wheat crop residues removed (-) treatments. Basal doses of N at the rate of 20: P at the rate of 60 kg ha-1 were applied to mungbean at sowing time in the form of urea and single super phosphate respectively. Labelled urea having 5% 15N atom excess was applied at the rate of 20 kg N ha-1 as aqueous solution in micro plots (1m2) in each treatment plot to assess BNF by mungbean. Similarly, maize and sorghum were grown as reference crops and were fertilized with 15N labelled urea as aqueous solution having 1% 15N atom excess at the rate of 90 kg N ha/sup -1/. The results obtained showed that mungbean yield (grain/straw) and WUE were improved in notillage treatment as compared to tillage treatment. Maximum mungbean grain yield (1224 kg ha/sup -1/) and WUE (6.61kg ha/sup -1 mm/sup -1/) were obtained in no-tillage (+ residues) treatment. The N concentration in mungbean straw and grain was not significantly influenced by tillage or crop residue treatments. The amount of fertilizer-N taken up by straw and grain of mungbean was higher under no-tillage with residues-retained treatment but the differences were not significant. The major proportion of N (60.03 to 76.51%) was derived by mungbean crop from atmospheric N2 fixation, the remaining (19.6 to 35.91%) was taken up from the soil and a small proportion (3.89 to 5.89%) was derived from the applied fertilizer in different treatments. The maximum amount of N fixed by mungbean (82.59 kg ha/sup -1/) was derived in no-tillage with wheat residue-retained treatment. By using sorghum as reference crop, the biological nitrogen fixed by mungbean ranged from 37.00 to 82.59 kg ha/sup -1/ whereas with maize as a reference crop, it ranged from 34.74 to 70.78 kg ha/sup -1/ under different treatments. In comparison, non-fixing (reference) crops of sorghum and maize derived up to 16.6 and 15.5% of their nitrogen from the labelled fertilizer, respectively. These results suggested that crop productivity, BNF and WUE in the rainfed environment can be improved with minimum tillage and crop residues retention. (author)
[en] This paper reports the comparison of determination methods for extra virgin olive oil (EVOO) adulteration with two kinds of oils, refined olive oil (ROO) and soybean oil by 19FNMR, 1H NMR and chemical titration. The determination of adulteration of EVOO with ROO by 19F NMR was comparable to the conventional method. The contents of oleic, linoleic and linolenic acids of different oil samples can be determined by both 1H NMR and GC-MS. The results obtained from the two methods showed little differences. The adulteration of EVOO with soybean oil is detected by 1H NMR, although the limit of detection of the adulteration level is not less than 4.5%. The research demonstrates that 19F NMR can be a fast and convenient method to detect EVOO if it is adulterated with ROO and 1H NMR can be a fast and convenient method to detect EVOO if it is adulterated with seed oils.
[es]Este artículo trata sobre la comparación de métodos para determinar la adulteración de aceites de oliva virgen extra (AOVE) con dos tipos de aceites, aceite de oliva refinado (ROO) y aceite de soja, mediante 19F NMR, 1 H RMN y valoración química. La determinación de la adulteración de AOVE con ROO mediante 19F RMN fue comparable al método convencional. El contenido de ácidos oleico, linoleico y linolénico de diferentes muestras de aceites puede determinarse por 1 H NMR y GC-MS. Los resultados obtenidos por los dos métodos mostraron pequeñas diferencias. La adulteración de los AOVE con aceite de soja se detecta mediante 1 H RMN, el límite de detección de la adulteración no es menor a 4.5%. Esta investigación demuestra que la 19F RMN puede ser un método rápido y conveniente para detectar EVOO si está adulterado con ROO y la 1 H RMN puede ser un método rápido y conveniente para detectar EVOO si está adulterado con aceites de semillas.
[en] This publication is part 2 of book 3 of the 32nd science week of the Supreme Council of Sciences, held in Damascus (Syria) from 7-13 Nov 1992. This part contains papers presented at this meeting on agricultural science: Animal production, insects, crops, feeds, pastures, food sciences