The results are presented of a series of herbicide experiments conducted on two soils in Natal; a heavy clay and a light sand respectively having high and low organic matter contents. The experiments were designed to evaluate preand post-emergent herbicide treatments on the specific weeds Panicum muximum, Cyperus rotundus, C. esculentus and annual grasses. Alachlor/2,4-D was the most successful...

A bioflocculant named MBF-UFH produced by a Bacillus species isolated from sediment samples of Algoa Bay of the Eastern Cape Province of South Africa was characterized. The bacterial identification was through 16S rDNA sequencing; nucleotide sequences were deposited in GenBank as Bacillus sp. AEMREG7 with Accession Number KP659187. The production of the bioflocculant was observed to be closely ...

using of different systems of soil plough after changing unconsciously and non-scientific of land use, other soil physical and chemical characteristics affected. this fact, especially in marginal lands and mountainous regions is more visible. this research compared with the purpose of studying land use changing on some soil physical and chemical characters like very tiny sand percent, ph, ec, c...

Nigeria had relied solely on her oil wealth at the expense of all other naturally endowed agricultural and enormous mineral resources that abound every landscape of the country. The worldwide economic melt-down that was experienced by the third quarter of 2008 in the United States of America coupled with the slide in foreign earning from crude oil export revenue at the international market, lea...

Use of tire shreds in construction projects, such as highway embankments, is becoming an accepted way of beneficially recycling scrap tires. However, in the last decade there was a decline in the use of pure tire shreds as fill materials in embankment construction, as they are susceptible to fire hazards due to the development of exothermic reactions. Tire shred-sand mixtures, on the other hand...

Wind erosion measurements were carried out in Nellis Dunes Recreation Area, southern Nevada, USA. Gross erosion (the total mass of sediment effectively blown away from a surface), gross deposition (the total mass of sediment effectively depositing on a surface) and net erosion (the difference in sediment mass before and after an event) were measured for 1 year, on 17 different types of surfaces...

Highly unsaturated soil mixtures (clay, sand and gravel) are used as building materials in many parts of the world, and there is increasing interest in understanding their mechanical and hydraulic behaviour. In the laboratory, xray computed tomography (XRCT) is becoming more widely used to investigate the microstructures of soils, however a crucial issue for such investigations is the choice of...

• Kaolin clay intake is a behavioral marker in rats. Ingestion of lithium chloride solution generates kaolin consumption lactose sucrose does not generate Lactose, we well as chloride, causes nausea Adult rats learn to be shy away from taste paired with the ingestion solution. This study thus aimed elucidate nature this shyness learning. Specifically, by measuring consumption, which good maker ...

Soil structure has been recognised as a key feature in the understanding of soil’s mechanical behaviour, and research efforts have made trying to relate them. However, main difficulties encountered are that numerous factors can simultaneously affect behaviour soils. Among these factors, presence aggregates is decisive for fabric configuration bimodal The aim this paper evaluate effect on soils ...