Evaluation of the Technological Properties of the Bio-organic Colored Cotton

摘要

Reducing the use of the chemical pollutants become necessary for save environment. Cotton is a crop needs extensive use of fertilizers during growing and a lot of chemical during processing. Thus, alternative sources of non chemical fertilizers in addition to, use less chemical in bleaching and dyeing is very important to cotton producer and manufacturer. Our study was performed at Cotton Res. Inst., Agric. Res. Center, Egypt, during 2011 and 2012 seasons to study the effect of using cyanobacteria strain {Spirulina platensis) (Azolla pinnata) as biofertilizers and Humic acid as an organic fertilizer on the technological properties of the colored cotton. Split plot design with three replicates was used in this study. The cotton Type (T) was occupiedthe main plot as a main factor with two levels (green cotton, brown cotton), while; the fertilizers treatments (F) were distributed randomly in the sub plots. The effect of all factors under study and their interaction were significant for all charactersunder study except for the effect of the main factor and the interaction on the soil biological characters, the effect of the sub main factor and the interaction on fiber upper half mean (mm), fiber elongation%, the effect of all factors and their interaction on fiber uniformity index and the effect of the interaction on the color parameters on both years. The green cotton surpassed the brown cotton on fiber upper half mean (mm), fiber strength (g/tex), fiber maturity ratio and fiber color strength (K/S). On the other hand, the brown cotton exhibited the highest value for micronaire value, fiber fineness (millitex), fiber elongation (%), fiber yellowness/blueness% (b~*) and fiber redness/greenness% (a~*). The treatment Spirulina platensis suspension+Azolla pinnata suspension+Humic acid (F4) generally enhanced all the fiber characters (except upper half mean) as well as, the soil biological activity in terms of increasing the total bacterial, total cyanobacterial counts, CO_2 evolution. On the contrary, the treatment containing spirulina platensis suspension only (F2) was the least one. So, it is save for environment to fertilize the colored cotton with bio-organic fertilizers, which enhanced the soil activates without affecting its fiber properties.