357 results match your criteria higher npk

Bioactivity of Humic Acids Extracted From Shale Ore: Molecular Characterization and Structure-Activity Relationship With Tomato Plant Yield Under Nutritional Stress.

Front Plant Sci 2021 26;12:660224. Epub 2021 May 26.

Humic R&D Lab, Bio Huma Netics, Inc., Gilbert, AZ, United States.

The increasing demands for biostimulants in the agricultural market over the last years have posed the problem of regulating this product category by requiring the industry to make available the information about efficacy and safety, including the explanation of mode of action and the definition of bioactive constituents. In the present study, we tested the biostimulant proprieties of a sedimentary shale ore-extracted humic acid (HA) on Micro Tom tomato plants under increasing nutritional stress and investigated the correlation with the chemical features of HA by means of ultra-high resolution FT-ICR MS, FT-ATR, and C-NMR. Humic acid application proved effective in alleviating the nutritional stress by improving nutrient use efficiency, with results comparable to the control treatment supplied with higher NPK nutrition. Read More

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Yellow phosphorus and Potash for SO and NO removal.

Environ Technol 2021 Jun 20:1-9. Epub 2021 Jun 20.

College of Environmental Science and Engineering, Donghua University, Shanghai, People's Republic of China.

Flue gases emitted from the industries and other emission sources are considered the main atmospheric issues. The main Flue gases emitted are sulfur oxides SO and Nitrogen oxides NO. The study was about methods of removing SO and NO from emitted gases and the possibility of deriving useful byproducts. Read More

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Conservation tillage and nutrient management practices in summer rice ( L.) favoured root growth and phenotypic plasticity of succeeding winter pea (L.) under eastern Himalayas, India.

Heliyon 2021 May 25;7(5):e07078. Epub 2021 May 25.

ICAR Research Complex for NEH Region, Umiam, Meghalaya 793103, India.

Low soil moisture during dry season, poor soil properties and lack of adequate crop varieties are the major constraints for sustainable intensification of eastern Himalayas in changing climate. Suitable varieties, tillage alteration and integrated nutrient management with emphasis on locally available crop residues/plant biomass may help addressing these issues. The role of minimum tillage (MT) and no-till (NT), and organic matter substitution on conferring of favourable root environment, improvement in morpho-physiology and subsequent productivity of the crops are not objectively studied in Himalayan ecosystems. Read More

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An improved microelectrode method reveals significant emission of nitrous oxide from the rhizosphere of a long-term fertilized soil in the North China Plain.

Sci Total Environ 2021 Aug 18;783:147011. Epub 2021 Apr 18.

Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang 050021, China.

Microsensors are able to accurately quantify nitrous oxide (NO) emissions in microenvironments at high spatio-temporal resolution; yet, limited studies have been conducted on agricultural soils due to the inability to obtain electrical signal under conditions of low soil moisture. This study improved the calibration of a microelectrode for measuring NO emissions from agricultural soil. The microelectrode was applied to evaluate the effect of long-term fertilization with mineral fertilizer (NPK), complemented with pig manure (MNPK), straw (SNPK), or without fertilizer (CK), all with and without urea addition, on NO emissions from the soil, with explicit separation of the rhizosphere and the bulk soil compartments. Read More

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Effect of Low Zeolite Doses on Plants and Soil Physicochemical Properties.

Materials (Basel) 2021 May 17;14(10). Epub 2021 May 17.

Institute of Agrophysics of Polish Academy of Sciences, Doswiadczalna 4 Str., 20-290 Lublin, Poland.

Thousands of tons of zeolitic materials are used yearly as soil conditioners and components of slow-release fertilizers. A positive influence of application of zeolites on plant growth has been frequently observed. Because zeolites have extremely large cation exchange capacity, surface area, porosity and water holding capacity, a paradigm has aroused that increasing plant growth is caused by a long-lasting improvement of soil physicochemical properties by zeolites. Read More

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Comparison of bacterial and archaeal communities in two fertilizer doses and soil compartments under continuous cultivation system of garlic.

PLoS One 2021 14;16(5):e0250571. Epub 2021 May 14.

School of Life Sciences, Qufu Normal University, Jining, PR China.

Soil microbial communities are affected by interactions between agricultural management (e.g., fertilizer) and soil compartment, but few studies have considered combinations of these factors. Read More

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Effect of irrigation, fertiliser type and variety on grain yield and nutritional quality of spelt wheat (Triticum spelta) grown under semi-arid conditions.

Food Chem 2021 Oct 20;358:129826. Epub 2021 Apr 20.

Nafferton Ecological Farming Group, School of Agriculture, Food and Rural Development, Newcastle University, NE1 7RU, Newcastle upon Tyne, Tyne and Wear, UK; Geokomi plc, P.O. Box 21, Sivas Festos, GR70200 Crete, Greece. Electronic address:

Previous studies reported higher antioxidant and mineral micronutrient concentrations in organic compared to conventional wheat flour, but the reasons are poorly understood. Here we report results from a long-term, factorial field experiment designed to assess effects of variety choice, supplementary irrigation and contrasting fertilization regimes used in organic and conventional production on the nutritional quality and yield of spelt wheat grown in a semi-arid environment. Long-straw (Oberkulmer, Rubiota, ZOR) varieties had 10-40% higher grain Cu, Fe, Mn and Zn concentrations, while the modern, short straw variety Filderstolz had 15-38% higher grain antioxidant activity. Read More

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October 2021

Conversion of Spent Coffee and Donuts by Black Soldier Fly () Larvae into Potential Resources for Animal and Plant Farming.

Insects 2021 Apr 8;12(4). Epub 2021 Apr 8.

Center of Excellence in Aquaculture and Fisheries, University of Arkansas at Pine Bluff, 1200 North University Drive, Pine Bluff, AR 71601, USA.

Nutritionally unbalanced organic waste can be converted into potential resources for animal and plant farming by culturing black soldier fly () larvae (BSFL) and prepupae (BSFP). BSFL and BSFP are rich sources of protein and lipids, while the leftover excrement called "frass" can be used as an organic fertilizer. Using readily available resources, BSFL were cultured on spent coffee, donut dough or an equal blend for 35 days. Read More

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Substituting chemical P fertilizer with organic manure: effects on double-rice yield, phosphorus use efficiency and balance in subtropical China.

Sci Rep 2021 Apr 21;11(1):8629. Epub 2021 Apr 21.

Soil and Fertilizer Institute of Hunan Province, Hunan Academy of Agricultural Sciences, 730 Yuanda No.2 Rd, Furong District, Changsha, 410125, China.

Organic manure is an ideal alternative fertilizer to provide phosphorus (P) but is not fully recycled in subtropical China. In order to identify if it can replace chemical P fertilizer, a 35-year field trail in a paddy soil under double-rice cropping system was conducted to assess the effects of substituting chemical P fertilizer with pig manure (NKM) on rice yield, phosphorus use efficiency (PUE) and P balance. The N, P and K input under NKM was 1. Read More

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60 years of fertilization and liming impacts on soil organic carbon stabilization in a sub-tropical Alfisol.

Environ Sci Pollut Res Int 2021 Apr 21. Epub 2021 Apr 21.

Environmental Sciences and Biomedical Metrology Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.

Limited information is available on the C stabilization mechanism of tropical soils under different management practices including long-term organic manuring, mineral fertilization alone, or in combination with lime. Hence, to understand the effect of continuous application (for 60 years) of organic manure, fertilizer, and lime alone or in combination on an acidic Alfisol, stabilization of soil organic carbon (SOC) was evaluated under maize (Zea mays L.) wheat (Triticum aestivum L. Read More

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Slow-release nitrogen fertilizers enhance growth, yield, NUE in wheat crop and reduce nitrogen losses under an arid environment.

Environ Sci Pollut Res Int 2021 Apr 9. Epub 2021 Apr 9.

Department of Agronomy, MNS University of Agriculture Multan, Multan, Punjab, Pakistan.

Higher demands of food led to higher nitrogen application to promote cropping intensification and produce more which may have negative effects on the environment and lead to pollution. While sustainable wheat production is under threat due to low soil fertility and organic matter due to nutrient degradation at high temperatures in the region. The current research explores the effects of different types of coated urea fertilizers and their rates on wheat crop under arid climatic conditions of Pakistan. Read More

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Effect of ZnO nanoparticles on the productivity, Zn biofortification, and nutritional quality of rice in a life cycle study.

Plant Physiol Biochem 2021 Jun 30;163:87-94. Epub 2021 Mar 30.

Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Key Laboratory for Crop and Animal Integrated Farming of Ministry of Rural Agriculture, Nanjing, 210014, China. Electronic address:

Zinc oxide nanoparticles (ZnO NPs), have been commonly used in agriculture, and have attracted more attention for researchers. In this study, a 2-year experiment was conducted involving two Zn types (ZnO NPs and ZnSO), two concentrations of Zn (25 and 100 mg kg), and three Zn application stages (basal stage, tillering stage, and panicle stage). This study comprehensively evaluated the effects of ZnO NPs on rice yield, nutrient uptake, Zn biofortification and grain nutritional quality. Read More

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Seedling Responses to Organically-Derived Plant Growth Promoters: An Effects-Based Approach.

Plants (Basel) 2021 Mar 30;10(4). Epub 2021 Mar 30.

Faculty of Agricultural Sciences, Lincoln University, Lincoln 7647, Canterbury, New Zealand.

Organically-derived biofertilizers and biostimulants, developed from harvested materials such as seaweed and waste from animal and fish processing, are currently the subject of much fundamental and applied research. These products have significant potential in reducing synthetic fertilizer inputs to horticultural, arable, and pasture-based agricultural systems, although there is frequently some ambiguity over the magnitude and consistency of any positive effects these products may have on plant performance. This study examined the effects of organically-derived plant growth promoters (PGPs) available in New Zealand on the early vegetative growth of 16 plant species maintained under glasshouse conditions. Read More

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Exogenous melatonin mitigates chromium toxicity in maize seedlings by modulating antioxidant system and suppresses chromium uptake and oxidative stress.

Environ Geochem Health 2021 Apr 2. Epub 2021 Apr 2.

Department of Forestry and Wildlife, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.

Melatonin, being an endogenous signaling molecule plays important role in plant growth and stress alleviation. The present study was conducted to evaluate the ameliorative role of melatonin against Cr toxicity in maize seedlings. The Cr toxicity (50, 100 and 200 µM) severely affected hydroponically grown seedlings growth in a dose-dependent manner; however, the melatonin (0. Read More

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Inorganic Chemical Fertilizer Application to Wheat Reduces the Abundance of Putative Plant Growth-Promoting Rhizobacteria.

Front Microbiol 2021 11;12:642587. Epub 2021 Mar 11.

Sustainable Agriculture Sciences, Rothamsted Research, Harpenden, United Kingdom.

The profound negative effect of inorganic chemical fertilizer application on rhizobacterial diversity has been well documented using 16S rRNA gene amplicon sequencing and predictive metagenomics. We aimed to measure the function and relative abundance of readily culturable putative plant growth-promoting rhizobacterial (PGPR) isolates from wheat root soil samples under contrasting inorganic fertilization regimes. We hypothesized that putative PGPR abundance will be reduced in fertilized relative to unfertilized samples. Read More

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Low Soil Nutrient Tolerance and Mineral Fertilizer Response in White Guinea Yam () Genotypes.

Front Plant Sci 2021 19;12:629762. Epub 2021 Feb 19.

International Institute of Tropical Agriculture, Ibadan, Nigeria.

Yam ( spp.) is a major food security crop for millions of resource-poor farmers, particularly in West Africa. Soil mineral deficiency is the main challenge in yam production, especially with the dwindling of fallow lands for the indigenous nutrient supply. Read More

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February 2021

Glucose modulates copper induced changes in photosynthesis, ion uptake, antioxidants and proline in Cucumis sativus plants.

Carbohydr Res 2021 Mar 19;501:108271. Epub 2021 Feb 19.

Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202002, India.

Glucose is recognized as signaling molecule that regulates growth and development of plants under various environmental cues, but their effect in regulation of copper induced toxicity in plants is not yet investigated. This study revealed the effect of exogenously sourced glucose on Cucumber plants exposed to increasing concentration of copper. Glucose mediated response on growth performance, photosynthetic efficiency, antioxidant enzymes, oxidative stress markers, ion uptake were analyzed in the presence and absence of copper. Read More

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Feed Composition Differences Resulting from Organic and Conventional Farming Practices Affect Physiological Parameters in Wistar Rats-Results from a Factorial, Two-Generation Dietary Intervention Trial.

Nutrients 2021 Jan 26;13(2). Epub 2021 Jan 26.

Nafferton Ecological Farming Group, Food and Rural Development, School of Agriculture, Newcastle University, Newcastle upon Tyne, Tyne and Wear NE1 7RU, UK.

Recent human cohort studies reported positive associations between organic food consumption and a lower incidence of obesity, cancer, and several other diseases. However, there are very few animal and human dietary intervention studies that provide supporting evidence or a mechanistic understanding of these associations. Here we report results from a two-generation, dietary intervention study with male Wistar rats to identify the effects of feeds made from organic and conventional crops on growth, hormonal, and immune system parameters that are known to affect the risk of a number of chronic, non-communicable diseases in animals and humans. Read More

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January 2021

Impacts of long-term inorganic and organic fertilization on phosphorus adsorption and desorption characteristics in red paddies in southern China.

PLoS One 2021 29;16(1):e0246428. Epub 2021 Jan 29.

Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China.

Soil phosphorus (P) adsorption and desorption occur in an important endogenous cycle linked with soil fertility problems and relevant to the environmental risk assessment of P. In our study, the effect of long-term inorganic and organic fertilization on P adsorption and desorption characteristics in relation to changes in soil properties was evaluated by selecting three long-term experimental sites in southern China. The selected treatments at each site were CK (unfertilized), NPK (synthetic nitrogen, phosphorus and potassium) and NPKM (synthetic NPK plus manure). Read More

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Synthesis and Application of Arylaminophosphazene as a Flame Retardant and Catalyst for the Polymerization of Benzoxazines.

Polymers (Basel) 2021 Jan 14;13(2). Epub 2021 Jan 14.

Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia.

A novel type of phosphazene containing an additive that acts both as a catalyst and as a flame retardant for benzoxazine binders is presented in this study. The synthesis of a derivative of hexachlorocyclotriphosphazene (HCP) and meta-toluidine was carried out in the medium of the latter, which made it possible to achieve the complete substitution of chlorine atoms in the initial HCP. Thermal and flammability characteristics of modified compositions were investigated. Read More

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January 2021

Transforming wet blue leather and potato peel into an eco-friendly bio-organic NPK fertilizer for intensifying crop productivity and retrieving value-added recyclable chromium salts.

J Hazard Mater 2021 06 7;411:125046. Epub 2021 Jan 7.

Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, India. Electronic address:

An attempt has been made to address two important issues, the solid waste management of leather industry and soil fertility. The SEM images revealed altered surface-morphology.The EDS elemental analysis exhibited presence of about 13. Read More

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Novel alginate-cellulose nanofiber-poly(vinyl alcohol) hydrogels for carrying and delivering nitrogen, phosphorus and potassium chemicals.

Int J Biol Macromol 2021 Mar 13;172:330-340. Epub 2021 Jan 13.

Southern Regional Research Center, USDA Agriculture Research Service, New Orleans, LA 70124, United States.

Novel nanocomposite hydrogels were successfully prepared by blending and crosslinking sodium alginate (SA), poly(vinyl alcohol) (PVA) and cellulose nanofibers (CNFs) in the presence of a fertilizer formulation containing nitrogen (N), phosphorus (P) and potassium (K). The hydrogels had a macroporous flexible core and a microporous semi- interpenetrating polymer network (IPN) shell. The crystalline nature of the NPK chemicals was retained in the hydrogel nanocomposite network. Read More

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Spatial changes and driving variables of topsoil organic carbon stocks in Chinese croplands under different fertilization strategies.

Sci Total Environ 2021 May 29;767:144350. Epub 2020 Dec 29.

Sustainable Agriculture Systems, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK.

The effect of different fertilization strategies on changes in soil organic carbon (SOC) largely depends on the current status of a given agricultural region. We analysed the results of 90 long-term field trials (20-37 years) in Chinese croplands to determine the effects of fertilization strategies [i.e. Read More

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Yield Response and Nutrient Use Efficiencies under Different Fertilizer Applications in Maize ( L.) In Contrasting Agro Ecosystems.

Int J Plant Soil Sci 2019 16;29(3). Epub 2019 Aug 16.

ILRI/CIMMYT, Gurd Shola, P.O.Box. 5689, Addis Ababa, Ethiopia.

Variability in crop response and nutrient use efficiencies to fertilizer application is quite common under varying soil and climatic conditions. Understanding such variability is vital to develop farm- and area- specific soil nutrient management and fertilizer recommendations. Hence the objectives of this study were to assess maize grain yield response to nutrient applications for identifying yield-limiting nutrients and to understand the magnitude of nutrient use efficiencies under varying soil and rainfall conditions. Read More

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Case Study upon Foliar Application of Biofertilizers Affecting Microbial Biomass and Enzyme Activity in Soil and Yield Related Properties of Maize and Wheat Grains.

Biology (Basel) 2020 Dec 8;9(12). Epub 2020 Dec 8.

Institute of Soil Science, Teodora Drajzera 7, 11000 Belgrade, Serbia.

This study evaluated the effects of the application of microbial inoculants (N-fixing and spp.), two rates of composite mineral fertilizers, and their combination on microbial biomass carbon (MBC), dehydrogenase (DHA), and proteinase activity (PTA) in Lessivated Cambisol and yield-related properties of maize and wheat grains in a two-year trial. Unfertilized soil was used as a control variant. Read More

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December 2020

Earthworm intervened nutrient recovery and greener production of vermicompost from Ipomoea staphylina - An invasive weed with emerging environmental challenges.

Chemosphere 2021 Jan 25;263:128080. Epub 2020 Aug 25.

Department of Botany, Government Arts College (Autonomous), Salem, 636 007, Tamil Nadu, India. Electronic address:

The invasive weed, Ipomoea staphylina (IS) with cow dung (CD) and mushroom spent straw (MS) in four different combinations (IS:CD:MS), V1 (1:1:0), V2 (2:1:1), V3 (1:0:1) and V4 (1:1:1) were pre-decomposed for 21 days followed by 50 days vermicomposting using Eudrilus eugeniae in triplicates in order to alleviate and to utilize the weed biomass in an environment-friendly manner. The contents of organic matter, organic carbon, cellulose, lignin, C/N and C/P ratios showed a decrease, while electrical conductivity, total NPK, calcium, sodium, and nitrate-nitrogen showed a significant increase in vermicompost over control. Water-soluble organic carbon to organic nitrogen ratio and C/N ratio in V1 (0. Read More

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January 2021

Investigations of the effect of the amount of biochar on soil porosity and aggregation and crop yields on fertilized black soil in northern China.

PLoS One 2020 17;15(11):e0238883. Epub 2020 Nov 17.

Plant Nutrition and Resources Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.

The combination of chemical fertilizer and biochar is regarded as a useful soil supplement for improving the properties of soil and crop yields, and this study describes how the biochar of maize straw can be used to improve the quality of the degraded black soil. This has been achieved by examining the effects of combining different amounts of biochar with chemical fertilizer on the porosities and aggregate formation of soil and exploring how these changes positively impact on crop yields. A field trial design combining different amounts of maize straw biochar [0 (NPK), 15. Read More

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December 2020

Soil quality parameters vis-a-vis growth and yield attributes of sugarcane as influenced by integration of microbial consortium with NPK fertilizers.

Sci Rep 2020 11 5;10(1):19180. Epub 2020 Nov 5.

ICAR-Indian Institute of Sugarcane Research, P.O. Dilkusha, Lucknow, 226002, India.

Intensive agriculture involving high crop intensity, unavailability of organics, and higher use of straight fertilizers causes imbalanced use and deficiencies of several other macro and micronutrients. Nutrients supply through the integration of microbial consortium containing Gluconacetobater diazotrophicus, Trichoderma harzianum, and Pseudomonas fluorescens can reduce the requirements on the one hand and can also increase the response of chemical fertilizers. Thus we had planned the present experiment with the objectives (i) to determine the effect of integrated application of microbial consortium (MC) and NPK fertilizer on soil quality parameters and crop growth and yield attributes and (ii) to assess the effect of integration on agronomic efficiency of N, P and K and find out the possibilities for reduction in applied doses of NPK, if any. Read More

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November 2020

Vermitransformation of monogastric Elephas maximus and ruminant Bos taurus excrements into vermicompost using Eudrilus eugeniae.

Bioresour Technol 2021 Jan 22;320(Pt A):124302. Epub 2020 Oct 22.

Department of Botany, Government Arts College (Autonomous), Salem 636 007, Tamil Nadu, India.

Biotransformation of monogastric (Elephas maximus) and ruminant (Bos taurus) excrements with Eudrilus eugeniae was assessed by establishing five different treatments in triplicate: 100% elephant dung (T1), 50% elephant dung + 50% garden soil (T2), 50% elephant dung + 50% cow dung (T3), 100% cow dung (T4) and 50% cow dung + 50% garden soil (T5) and maintained for 90 days under experimental conditions. An increment of macronutrients and reduction of C/N ratio (<20) in the vermicomposts was recorded, where T3 presented higher NPK contents with the relative nutrient recovery efficiency of 1.65, 2. Read More

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January 2021