Forage Production and Phosphorus Phytoremediation in Manure‐Impacted Soils

Abstract

In general, livestock producers face problems associated with the disposal of manures from their animal Amounts of manure generated by concentrated animal operations operations due to limited available land and strict envioften exceed the capacity of nearby land, and stricter environmental regulations lead to creation of pockets of highly impacted sites within ronmental regulations. Moreover, in concentrated ania watershed basin. Linking forage production with manure utilization mal operations, feeds are transported to farms while lack can be an effective approach for addressing both the problems of of manure transportation from the farms has resulted in manure disposal and impact reductions on water quality. In general, H.K. Pant and M.B. Adjei, Univ. of Florida, IFAS, RCREC, 3401 Experiment Station, Ona, FL 33865; J.M.S. Scholberg and C.G. Cham-Thus, their use may lead to accumulations of excess nutribliss, Univ. of Florida, IFAS, Dep. of Agron., Newell Hall, Gainesville, ents, including N and P in soils, and cause potential haz-FL 32611; and J.E. Rechcigl, Univ. of Florida, IFAS, GCREC, 5007ards to water quality. As eco-consciousness increases,

The Effect of Poultry Litter Application on Agricultural Production: A Meta-Analysis of Crop Yield, Nutrient Uptake and Soil Fertility

“…Therefore, PL application could improve plant P uptake and increase tissue P concentration in both row crops and forages compared to IF. The results are consistent with the reviews that focus on the effect of manure on forage production (Pant et al, 2004). In this MA, PL application rates was based on crop N requirements, so the input of P from PL was more likely higher than recommended (Bolan et al, 2010) and thus entirely satisfied plant requirements.…”

Ectopic Expression of a Phytase Gene from Medicago truncatula Barrel Medic Enhances Phosphorus Absorption in Plants

“…Phosphorus is a major component of animal manure and is especially significant in poultry litter, which is spread on cropland and pastures in areas with an extensive poultry industry (Matuszeski 2000). In recent years, the accumulation of P in soils has received major attention in ecologically sensitive agricultural catchments owing to the eutrophication it causes to surrounding water bodies (Pant et al 2004). Because transgenic plants expressing MtPHY1 had higher P concentrations and markedly increased total P content, MtPHY1 also has the potential to be used in transgenic studies to remove excessive organic P from certain land areas.…”

Impact of Harvest Management on Forage Production and Nutrient Removal by Smooth Bromegrass on a Vegetated Treatment Area

“…However, production of forage should not compromise their capacity to provide filtering for nutrients from feedlot effluent. Therefore, management strategies that permit high quality forage production while maintaining the filtering capacity of VTAs need to be developed [5].…”

“…Used as buffer strips, grasses reduce P losses by reducing both total runoff and the suspended solids in runoff waters. Perennial grasses trap P from surface runoff by sedimentation of P-enriched soil particles and uptake of dissolved P [5] [8]. Grass species suitable for VTAs should have (i) potential for high biomass yield, (ii) tolerance for wet conditions, (iii) prolonged vegetative growth, and (iv) tolerance for more than one harvest per year.…”

“…(Figure 1). Grasses that are rhizomatous, have well-developed root systems, and can tolerate biannual harvesting for many years, have the possibility of producing high dry matter yields and may also have potential as energy crops [5]. Smooth bromegrass is used for hay and pasture throughout temperate North America [9].…”