In this work we have analyzed soil samples from Oxisols collected from two traditional communities, one formed by Guarany Indians at South of Brazil and other by African descendants on North of Rio de Janeiro State, Brazil. The content and fractional composition of humus was investigated and the isolated humic acids (HAs) were characterized by elemental composition, C solid-state nuclear magnet...

To assess the effects of inter-cropping corn and soybean under southwestern Japan’s climatic conditions, 5 different treatments were compared, namely: CW (mono-cropped - weeded); CTW (corn + cv. Tachinagaha CT unweeded); CSW Suzukaren CS unweeded). Parameters measured height, yield, nutrient composition numbers Japanese beetles (Popillia japonica). Plant height mono-cropped was significantly (P...

The availability of nitrogen (N) and zinc (Zn) at the specific plant growth stage is crucial for attaining higher nutrient use efficiency (NUE) uptake. An experiment was conducted, having 4-N scheduling [No N; ½[basal]+ ½[3rd visible leaf (VL)]; ¼[basal]+ ½[3rdVL]+ ¼[panicle extended in flag sheath (PEFLS)]; ½[basal] + ¼[3rdVL]+ (PV)], 4-Zn Zn; 2.5 kg/ha [basal]+ 0.25% spray(*) [panicle initiat...

Most digital watermarking techniques are susceptible to damage by data cropping. Although the effects of cropping might not be perceptible, watermark recovery may be rendered difficult or impossible due to the desynchronization of the recovery process. The transform encryption coding (TEC) based watermarking algorithm was presented at ICASSP 2000 [2]. The present paper investigates the performa...