Site Soil-Fertility and Light Availability Influence Plant-Soil Feedback

Soil and Plant Nitrogen Availability

Soil and Soilless Cultivation Influence on Nutrients and Heavy Metals Availability in Soil and Plant Uptake

Nowadays, most countries especially in arid and dry climate zones had experienced the water scarcity problems. In the agricultural sector, freshwater play a major role to supply water for the plant grows. Thus, the reuse of wastewater as alternative water resources in agricultural is highly recommended. However, wastewater is always contaminated despite after secondary treatment. Along benefici...

DIVISION S-4—SOIL FERTILITY & PLANT NUTRITION Relationships Between Soil Nitrogen Availability Indices, Yield, and Nitrogen Accumulation of Wheat

ney, 1982), have been proposed. Stanford and Smith (1972) developed a biologically based, long-term incuThe success of variable rate N fertilizer application rests on our bation method whereby potentially mineralizable N can ability to predict the contribution of soil N to growing crops. We assessed relationships between soil N availability indices (SNAIs), be estimated using one-pool (Stanford...

Division S-4—soil Fertility & Plant Nutrition

cially if manure is surface-applied (Thompson et al., 1987). Conversely, denitrification losses of manure N Repeated N applications to field crops, either as inorganic fertilizers are increased by incorporation or injection (Comfort et or animal manures, can lead to N buildup in soils with potential longterm environmental hazards. The objective of this 3-yr field study al., 1988), and because o...

Negative plant /soil feedback and species coexistence

Different mechanisms, including equilibrium and non-equilibrium processes, have been taken into account as possible theoretical explanations of species coexistence. Despite the ample evidence on the existence of negative plant /soil feedback in both agriculture and natural vegetation, the role of these processes in the organization and dynamics of plant communities has so far been neglected. In...