Soil Phosphorous uptake

Table 4 presents the results of a batch test of a soil contaminated by 6.5g/kg dry matter of mineral oil, established to evaluate the feasibility of biosparging as a remediation technology (J. Gemoets, personal communication). Apart from a sterile control, air was added to two other microcosms. In one, additional nutrients were added. Only in the aerated situation, together with the addition of nitrogen and phosphorous, was any degradation observed (32%), and a peak O2 uptake rate of 1.2g/kg/d was... 

Measurements will be made of the form and levels of elements in soil, movement of elements to plant roots, uptake of elements by plant roots, and translocation to above-ground, and edible portions of plants. The elements to be studied include magnesium, calcium, potassium, zinc, phosphorous, nitrogen, iron, manganese, copper, and aluminum. 

The low partition coefficient of 1 indicates that it has no potential to accumulate in biological tissues and, therefore, also not in the food chain. The rapid uptake and translaminar transport of 1 is excellent, as observed in cabbage leaves [23] and in rice and cucumber [24]. Additionally, 1 has a considerable acropetal mobility in xylem of plants. In contrast, its penetration and translocation in cotton leaves was less pronounced, as shown by phosphor-imager autoradiography [25]. This xylem mobility makes 1 especially useful for seed treatment and soil application, but it is equally active for foliar application. Owing to its lack of any acidic hydrogen, the pK of 1 is >14 and, therefore, its transport within the... 

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