Titlebook: Improved Crop Quality by Nutrient Management; D. Anac,P. Martin-Prével Book 1999 Springer Science+Business Media Dordrecht 1999 environmen

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蚊子

MERIT

The effect of different amounts of N-fertilizers on the nitrate accumulation in the edible parts of zation. Seven N-fertilizer treatments consist of 0, 100, 200, 300, 400, 500, and 600 N kg/ha conducted in Varamin in 1995 for spinach, lettuce, celery cabbage and on the other four vegetables the five treatment contained, i.e. 0, 100, 200, 300, and 400 N kg/ha carried out in Karaj region in 1996. At

預(yù)感

Hemiparesis

Effect of nitrogen and iron sources applied to calcareous soil on the growth and elemental content oemental composition of wheat plants grown on calcareous soil. The N sources are NO.., NH.. and urea which were added to the soil using rates of 30, 60 and 120 kg N/acre. The Fe sources are FeSO. and FeEDDHA which were added at the rates of 0, 10 and 20 kg Fe/acre. Results show a significant increase

groggy

Analysis of economic efficiency of top dressing by nitrogen of soil sown by wheato rates, forms and application times Results showed that wheat yields increase with increased rate of soil applied nitrogen, over the range tested. Economic efficiency of nitrogen top dressing for all observed strategies including traditional and visual method decreases with increasing application o

執(zhí)

Application of N-min method at top-dressing of winter wheatto study the effect of preseeding N fertilization for winter wheat related to mineral N (NO. + NH.) in the soil and the amount of N for top-dressing. Results showed that with the use of N-min method, the quality of N fertilizer at top dressing has decreased regarding the visual impression and foliar

inchoate

Nitrogen utilization in spring barley genotypesenotypes for all characters were significant. Grain yield, total N yield and grain protein content of genotypes ranged between 2186 and 3222 kg.ha., 72.7 and 102.3 kg.ha., 12.01 and 13.27 %, respectively. Tokak 157/37 had the highest uptake (1.28 kg N uptake/kg N applied), translocation (72.1 %) and

engender

The effect of nitrogen doses on nitrogen uptake and translocation in spring barley genotypese in Erzurum, in 1996 and 1997. Three barley genotypes (Tokak 157/37, Cytris, and 1515) were used with five doses of N (0, 20, 40, 60 and 80 kg ha.). Significant differences were observed between genotypes, in the grain N concentration, grain protein concentration, grain N yield, total N uptake and