Surface soil phosphorus and phosphatase activities affected by tillage and crop residue input amounts

Abstract

The effects of tillage and residue input amounts on soil phosphatase (alkaline phosphomonoesterase ALP, acid phosphomonoesterase ACP, phosphodiesterase PD, and inorganic pyrophosphatase IPP) activities and soil phosphorus (P) forms (total P, organic P, and available P) were evaluated using soils collected from a three-year experiment. The results showed that no-till increased soil total and organic P, but not available P as compared to conventional tillage treatments. Total P was increased as inputs of crop residue increased for no-till treatment. There were higher ALP and IPP activities in no-till treatments, while higher PD activity was found in tillage treatments and tillage had no significant effect on ACP activity. Overall phosphatase activities increased with an increase of crop residue amounts. Soil total P was correlated negatively with PD activity and positively with other phosphatase activities. Organic P had a positive correlation with ACP activity, but a negative correlation with PD activity. Available P had no significant correlation with phosphatase activities. Our data suggests that no-till and residue input could increase soil P contents and enhance the activities of phosphatase.

Changes in Land Use System and Environmental Factors Affect Arbuscular Mycorrhizal Fungal Density and Diversity, and Enzyme Activities in Rhizospheric Soils of Acacia senegal (L.) Willd.

“…Similar results have been obtained by Gianfreda et al [55] and recently by Wang et al [56]. It is known that when available P is deficient in soil, soil biota can stimulate the production of extracellular phosphatases to increase the supply of inorganic P in soil [56]. As the two sites differ in their ecological parameters including soil moisture and soil fertility, it could be assumed that these parameters, which constitute key factors controlling the growth and survival of soil microbes [57], might have encouraged such spatial variation in enzyme activities.…”

“…For instance, soils from Goudiry contained low available P but the highest total P and phosphatases activity. Similar results have been obtained by Gianfreda et al [55] and recently by Wang et al [56]. It is known that when available P is deficient in soil, soil biota can stimulate the production of extracellular phosphatases to increase the supply of inorganic P in soil [56].…”

The effect of non-chemical weed control on soil biological properties in a spring oilseed rape crop

“…Soil enzyme activity is a sensitive indicator of changes in the soil microorganism activity and soil fertility (Yang et al, 2008). Numerous researchers have documented the effects of crop rotations, tillage and fertilization on soil enzyme activity (Melero et al, 2008;Wang et al, 2011). Organic farming has been found to increase the overall enzyme activity (García-Ruiz et al, 2008;Moeskops et al, 2010); however, the activity of specific enzymes can vary depending on the availability of nutrients and their status as well as on the soil type and its characteristics, including structure, pH (AcostaMartínez et al, 2007;Stursová, Baldrian, 2010).…”

Effect of Bacillus subtilis on phosphorus uptake by cucumber as affected by iron oxides and the solubility of the phosphorus source

“…Although agricultural soils usually contain substantial amounts of total P, P deficiency is a widespread problem in agriculture (Holford 1997, Wang et al 2011) because most of total P is present as low plant-available forms owing to its reactions in soil Scalenghe 2008, Ryan et al 2012). Among such reactions, precipitation of metal phosphates and P adsorption onto Al-and Fe-oxides, are known to play a crucial role in the dynamics and availability of this nutrient in soils (Schwertmann and Taylor 1989, Guzman et al 1994, Saavedra and Delgado 2005.…”

“…This requires an efficiently management of available P resources (Simpson et al 2011, Withers et al 2014, through a better understanding of the biogeochemical cycle of P, the design of more rational fertilization schemes, as well as the use of more efficient biological resources such as crops with an increased capacity to use it (Kochian 2012, Heppell et al 2015. The manipulation of the rhizosphere by inoculation with microorganisms capable of improving P nutrition of crops can also contribute to the efficient management of P resources (Patel et al 2010, Wang et al 2011, García-López et al 2015.…”