677 Phosphorus Soil Transformations and Management for Vegetables

Management of soil-borne diseases of organic vegetables

With the rising awareness of the adverse effects of chemical pesticides, people are looking for organically grown vegetables. Consumers are increasingly choosing organic foods due to the perception that they are healthier than those conventionally grown. Vegetable crops are vulnerable to a range of pathogenic organisms that reduce yield by killing the plant or damaging the product, thus making ...

Labile and Non-Labile Fractions of Phosphorus and Its Transformations in Soil under Eucalyptus Plantations, Brazil

Phosphorus (P) is the main limiting nutritional factor in the cultivation of Eucalyptus in Brazil. Despite this, little is known about the P fractions and dynamics in Eucalyptus soils in tropical regions. The aims of this study were (1) to evaluate the distribution of labile and non-labile fractions of P in soil in 10 sites of Eucalyptus in the state of São Paulo, Brazil and (2) to determine th...

PHOSPHORUS MANAGEMENT Reduction of High Soil Test Phosphorus by Corn and Soybean Varieties

a significant relationship was found between soluble P loss in runoff and soil test P. Eghball and Gilley (2001) Soils with high levels of P can contribute to excess P in runoff and found that erosion was the most important factor in subsequently pollute the surface water. Excess P in the soil can be removed from the system by harvesting crops. The objectives of this loss of total and particula...

Understanding Soil Phosphorus An Overview of Phosphorus, Water Quality, and Agricultural Management Practices

Bermudagrass Management in the Southern Piedmont USA. II. Soil Phosphorus

which can become exposed at the soil surface from a long history of erosion (Bruce et al., 1990). Plant production can be limited by low levels of available P due Poultry production in the Appalachian Piedmont is exto high P-fixation capacity in soils of the southeastern USA. On the tensive (U.S. Dep. of Commerce, 1992). Manure mixed other hand, there is increasing concern about excessive appli...