Abstract Salinity and soil nutrient deficiencies are the main factors reducing plant productivity in arid semiarid areas. Among essential elements, nitrogen is usually most growth limiting saline or non-saline soils. A pot experiment was carried out greenhouse to evaluate influence of composted manure urea as sources on mineral [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sodium (Na)] content maize (Zea mays L.) under different levels salinity. Saline soils...

The behavior of humic substances (HS) and phosphorus (P) fractions in livestock manure co-composted with rice straw was studied by chemical spectroscopic analyses. Composting accompanied a decrease the levels carbon (C) nitrogen (N) as well HS fulvic acid (FA) fractions. elemental content (weight %) (HA) extracted from compost showed high C low oxygen (O) content, possibly due to degree oxidation. N/C H/C ratios HA decreased matured, whereas O/H O/C increased. decline ratio 1.24 at 0d 1.0...

The present study examined the effect of excessive application farmyard manure (FM) on rice production and environmental pollution in paddy fields Japan. A long-term field experiment was conducted during period 1976–2006 to examine trends yield components as affected by FM (20 Mg ha−1 year−1 containing 110 kg N, 180 P2O5, 320 K2O). Rice growth, soil fertility, surface water quality were also assessed final year (2006). results obtained compared with those a conventional practice recommended...

Knowledge of exchangeable cation chemistry can provide clues about tendencies toward either soil dispersion or flocculation as sodium accumulates. The accumulation might be influenced by texture and degree salinity. effects clay minerals, composition, salinity solution on Na-Ca exchange selectivities montmorillonite illite were studied. Regression equations for the ratio (ESR)-sodium adsorption (SAR) differed according to equilibrated solutions. experimental in this study from values...

Selected farmlands in southern Baja California, Mexico, were surveyed to determine the levels and causes of salinization/sodication irrigated agricultural soil. The salt dynamics observed profiles differed from farm farm. Low EC high pH sandy fields, because composition these soils can easily change when salts are leached by irrigation water that contains carbonates sodium. On other hand, salinity sodicity clayey fields. Soil is complexly interrelated with soil characteristics, amount soil,...

Large numbers of crab shells are disposed as food waste in the processing process. Chitin nanofiber (CNF) refers to chitin extracted from form ultrafine fibers that enable uniform dispersion water. We explored feasibility using CNF materials plant growth promoters. investigated effects application with fertilizer and its various methods on komatsuna cultivated Entisols Andosols materials. The surface had growth-promoting both Andosols. topdressing treatment was more effective promoting...

ABSTRACT Composting of livestock manure is a viable and environmentally sound method waste management. It usually an aerobic process, but anaerobic composting through use digesters also widely practiced management option, due to its cost efficiency. Although physicochemical changes during have been documented, information on the behavior total available heavy metals scanty. Such necessary for efficient compost environmental practice. In present investigation, we compared in mixed cattle +...

Abstract A greenhouse experiment was conducted to study the effects of saline water irrigation and soil salinity on growth kochia ( Kochia scoparia (L.) Schrad.) alfalfa Medicago sativa L.). The production low, half plants withered died under electrical conductivity ≥4 dS m −1 . However, high did not affect growth. mechanism sodium absorption differs between alfalfa. has a salt‐tolerance whereby concentration in plant does increase, regardless environmental conditions soil. increases with...

Abstract Soybean (Glycine max L., Merr.) is considered to have relatively high level of reproductive abscission, but research information on how fertilizer use influences this problem scanty. Field trials were therefore carried out for two seasons (1996 and 1998) investigate the abscission levels three soybean cultivars (TGX 536‐02D, TGM 579, Samsoy 11) as affected by foliar application urea during early stages. Flowering was not significantly increased application, although all fertilized...

We evaluated phytoremediation potential of a calcareous saline-sodic soil with Prosopis glandulosa relying on either N2 fixation (NFIX) or inorganic N (IN) and gypsum. Straw root dry matter NFIX were 60% 67% higher than that IN, respectively. While both plants IN retained nearly similar Ca2+, Na+ level in lysimeters was 1.8 folds NFIX, whereas levels K+ roots 13% 24% plants. P. released 39% 50% by the produced more gypsum treatment induced Ca2+ solubilization found treatment. Translocation...

Studies into cation release in manured soils are very limited and poorly documented. The present investigation was therefore aimed at comparing the influence of manure application on [calcium (Ca), magnesium (Mg) potassium (K)] mineralization four different soils. Four sources livestock manure: chicken (PM), cattle (CM), swine (SM), ostrich (OM) a control (no manure) were added to (Andosol, red–yellow soil, masa sandune soil) incubated for 8 weeks room temperature. Soils sampled weekly...

Abstract The use of organic manures as an alternative to chemical fertilizers is option for the development sustainable farming systems in Japan. present study examined effect rapeseed oilcake (RO) not only on yield and components rice (Oryza sativa L.) but also soil fertility parameters surface water quality a paddy field by comparing them with effects conventional inorganic fertilizer (IF) control (CR), that is, natural (unfertilized) system. long-term experiment from 1990 2006...

Abstract The present study investigated macro‐ and micronutrient status in the soils under native forest (NF), cropland (CL) rangeland over 27 years Colonia Okinawa, Santa Cruz, Bolivia, order to assess effect of land use on soil fertility region. C, N P pools CL were less by 60, 57 27% as compared NF, respectively. with Panicum maximum (RG) showed almost similar values CL, while Paspalum notatum (RB) relatively closer NF. Mehlich‐3 extractable P, Ca Mg considerably declined RG RB, but an...

Abstract Beets were grown on soils with various exchangeable sodium percentages (ESP). A saline non-sodic soil (SA, ESP = 3.2), a sodic (SO, 23), and high (HSO, 78) prepared from Tottori sand dune (CO). K-type Ca-type artificial zeolites (50 g kg−1) applied to these in order evaluate their effects the chemical properties of saturation extracts soils, water deficit, cation uptake transport, balance beet plants. In zeolite-free treatments, growth was accelerated SA SO, but suppressed HSO...

Because of the global increase in salt-affected soils, rapid and cost-effective remediations easily measurable soil salinity evaluations are required. Soil salinity, through EC, sodicity exchangeable sodium percentage values, were predicted using a 1:5 soil-water extract. To determine differences between arid regions, 48 samples (Inceptisols Entisols) from China 120 (Aridisol) Sudan used this study. Positive correlations EC saturation extract percentage, adsorption ratio observed all...

The physicochemical properties of soil profiles in the Luohui Irrigation Scheme located along southeastern edge Loess Plateau China were investigated. scheme covers part a river terrace system Luohe River. study area was approximately 31 × 16 km with north–south gradient and difference altitude about 40 m. divided into high (HT; 371–389 m), an intermediate (IT; 360–370 low (LT; 344–359 m). HT LT soils showed different trends salt accumulation their surface horizons overall profiles. Surface...