ABSTRACT Plant available water (PAW) is one of the physical parameters of soils and the basic data of irrigation plans. Although various theoretical or empirical approaches have been proposed to describe this phenomenon, it is still possible to investigate and evaluate the relevance and applicability of new sciences such as artificial neural network method in predicting this phenomenon. In existing

ABSTRACT Long-term use of chemical fertilizers has been known to degrade the various soil physico-chemical properties. Incorporation of crop residues (CR) along with biofertilizers (BF) is an important practice from improving the physico-chemical properties of soil. Laboratory analyses were conducted during 2015 on soil samples collected from an on-going long-term experiment “Nutrient management in

ABSTRACT Peat is a natural resource that regenerates very slowly, and the research for seeking low-cost and environmentally friendly alternative products is encouraged. This study evaluated the feasibility of corncob biochar (CB) and rice-husk biochar (RB) as peat substitutes in growth media for rhododendron species cultivation. We used aqueous extract (1/10 w/v) from biochar to assess its potential

ABSTRACT Long-term agricultural research with annual and perennial cropping systems provides significant insight into the carbon sequestration potential of agriculture in the East Mediterranean region of Anatolia. This study explored the effect of different application rates of phosphorus (P) fertilizer on the storage and quality of soil organic carbon (SOC) and soil CO2 flux to assess the relationship

ABSTRACT Mesoporous C (MC) has potential for controlling NH3 volatilization from fertilizer urea because of a high capacity for sorption of ions and gases, and so does sodium alginate (SA), a natural superabsorbent that has received considerable attention for developing slow-release fertilizers. Following stirred-flow experiments to evaluate both amendments for slowing urea release in water, novel

ABSTRACT This study aimed to predict soil properties using visible–near infrared (VIS-NIR) spectroscopy combined with partial least square regression (PLSR) modeling. Special emphasis was given to evaluating effect of pre-processing methods on prediction accuracy and important wavelengths. A total of 114 samples were collected and involved in chemical and spectral analyzes. PLSR model of each soil

ABSTRACT The present study was conducted to assess the ability of AquaCrop model in predicting of grain and biological yield of rice genotypes in water management. A two-year field experiment was conducted at the experimental farm of the Iranian Rice Research Institute in Rasht, Iran from 2016 to 2017. The experiment was established in a split-plot design with two irrigation management (continuous

ABSTRACT The experiments were conducted to evaluate the effects of silicon (Si) and phosphorus (P) application on crop productivity, grain quality, water-use efficiency (WUE), and soil enzyme activity in aerobic rice (AR) at Indian Agricultural Research Institute, New Delhi, India. Four levels each of Si (0, 40, 80, and 120 kg Si ha–1) and P (0, 30, 60, and 90 kg P2O5 ha–1) were tested in a factorial

ABSTRACT Nitrate (NO3 –-N) leaching in tropical soils, which are more weathered, is influenced by their mineralogical, physical, and chemical characteristics. Thus, the present study aimed to evaluate the effect of the variation of net electrical charge on the mobility of nitrate, applied as potassium nitrate (KNO3) or calcium nitrate (Ca(NO3)2), in samples from A and B horizons of three Red-Yellow

ABSTRACT In the scheduling of nutrient supply programs, analysis of plant nutrient status has been found to be useful to prevent the deficiency or toxic effects of nutrients in any horticultural crop. So the present study was framed to assess the foliage nutrient content and vegetative growth under different irrigation and fertigation combination modules. Recently apple (Malus ×domestica) orchards

ABSTRACT This study sought to identify whether piggery effluent-derived nitrogen sources can be formulated with urea and nitrification inhibitors to better synchronize nitrogen (N) supply with crop demand than conventional urea fertilizer alone. A 288 pot pasture growth and leaching growth accelerator trial (5 pasture cuts) was completed with a factorial treatment structure of three N sources (2.63 g

ABSTRACT Soil monitoring and research often requires a comparison of laboratory data generated by diverse instruments and in different laboratories to demonstrate the reliability and accuracy of the results. The outcomes of this work highlight a performance comparison among different analytical methods for the determination of calcium (Ca), magnesium (Mg), sodium (Na), and potassium (K), in soil. Five

Increasing soil acidity is one of the major factors limiting crop production in Ghana. Hence, identifying cocoa varieties that are well adapted to acidic soils and better extractors of important cocoa nutrients viz phosphorus (P) and potassium (K) is a suitable way to optimize the use of acidic soils to improve cocoa production. A 4 × 12 factorial in completely randomized design with four replications

In order to study the effect of municipal solid waste (MSW) compost and vermicompost on morpho-physiological properties and yield of canola under drought stress conditions, an experiment was conducted as factorial arrangement based on randomized complete block design with four replications. Treatments consisted of three levels of water regimes, including: 75% of the field capacity for well-watered

Biochar is a product of organic origin, which can be used in agriculture to improve primarily the physical and chemical properties of soil. In this study, olive pomace (OP) was used for biochar production. Olive pomace biochar (OB) was produced at two different pyrolysis temperatures as 350°C and 700°C (OB350 and OB700). OB was mixed at the rates of 1% (w/w) with sandy loam (SL) soil (Hypereutric Fluvisols)

The substrate is essential to ensure suitable conditions for the growth of Passiflora setacea seedlings. Thus, a study was conducted to investigate the effect of alternative substrates formulated with bee nest and termite mound materials on the growth of P. setacea cv. BRS Pérola do Cerrado seedlings. Six substrate combinations formulated from different proportions (v:v) of bee nest material (BNM)

Maize (Zea mays L.) is one of the most versatile crops and can be grown in diverse environmental conditions and has diversified uses as human food and animal feed. Maize grains cannot be considered only as a source of energy, as they provide significant amounts of protein as well. It is also recognized that maize grains have low micronutrient concentrations, particularly Zinc. Zn2+ is an essential

Estimation of canopy cover (CC) can be replaced with measurement of dry matter (DM) during the growing season, which leads to saving cost and time. A variety of software programs, such as Canopeo, have recently been launched for estimating CC by processing digital images. The main objective of the present study was to validate whether the CC estimated by Canopeo could be used to determine the critical

In the enclosure method, ammonia volatilization from an enclosed soil is commonly estimated by hanging acid-soaked polyfoam pads over the soil sample in an enclosed bottle. Response surface methodology (RSM) was used to optimize polyfoam density (D), pad height (H) and pad saturation with an acid solution (S) to maximize ammonia collection in the polyfoam pads. Three central composite design (CCD)

The application of inorganic fertilizer in rice field is a foremost maneuver to acquire higher yield but effects properties of acidic sandy soil. An alternative strategy is to blend inorganic fertilizer with soil binding materials like magnesium sulfate (0.5 ton/ha), fresh neem (Azadirachata indica) (1 ton/ha) leaves, used tea (Camellia sinensis var assamica) (1 ton/ha) leaves, fresh karanj (Pongamia

Increasingly intensive cropping systems and the introduction of new genetically modified cultivars can lead to a distinct demand for nutrients in soybean crops. This study aims to evaluate the response of two soybean cultivars [with and without tolerance to glyphosate (RR)] to sulfur (S) rates. The experimental design was completely randomized in a 6 × 2 factorial arrangement with four replicates.

In the Vakinankaratra region of the Malagasy Highlands, rainfed rice cultivation has developed rapidly, which has led to rapid degradation of soil fertility and reduced productivity. This study involved a comparison of rainfed rice in rotation with maize/Brachiaria (MZ-BR) or maize/soybean (MZ-SB) intercrops, managed by direct seeding (DS) or plowed with residue burial (PB) with conventional mineral

Iron (Fe) and manganese (Mn) are two essential micronutrients for plant growth, which their deficiency has usually been observed in calcareous soils. Herein the chemical fractionation status of Fe and Mn in surface and subsurface soils of 16 pedons under different climatic conditions, as well as their relationship with some chemical and mineralogical properties, was investigated. As results, the residual

The objective of the study was to evaluate effects of liming on phosphorus (P) adsorption and desorption capacity of acid soils in Assosa and Bambasi Districts. The soil samples were collected from six rural Kebeles; three from each Kebele and totally 18 samples were collected. The study was conducted in accordance with batch equilibrium method and adsorption values were fitted to Langmuir, Freundlich

Changes in oil and forage quality of maize due to agronomic practices have been poorly investigated. A field experiment was carried out to determine the effect of sowing date, and organic and inorganic fertilizers on fatty acid composition, physiological traits, yield, and yield components of maize in two cropping season. Sowing date (on time and delay planting), organic fertilizers (control, fresh

The aims of this study were to see the effect of variability of crop residues viz., rice straw, wheat straw, mustard stover, chickpea stover and tree leaves on solubilization and availability of phosphorus (P) fractions during composting of rock phosphate enriched composting (RPEC) vis-a-vis ordinary compost; to propose suitable bioavailable index for RPEC; and to recommend the maturity time of RPEC

Iron (Fe) is chronically low in saline sodic soils. The effect of nano iron (Fe) particles complexed with salicylic acid (nFe-SA) on the Fe supply and salinity tolerance of Pistacia vera ‘Akbari’ seedlings were compared with seedlings grown in a control Hoagland nutrient solution amended with Fe-EDDHA. The saline treatments were prepared by adding 0 (control), 100, and 200 mM NaCl to the nutrient solutions

Modern agriculture has become more productive, sustainable, and environmentally friendly. Therefore, the use of rhizobacterial in agriculture for sustainable crop production is becoming more and more important. The present study was aimed to determine the effect of Pseudomonas fluorescens bacterium on the growth of plant, yield and seed nutrient content in lentil (Lens Culinaris Medik.). The field

Continuous use of only N and P containing fertilizers are claimed to be the causes of other secondary and micronutrients depletion, resulting in low crop productivity in Ethiopia. In this study, on-farm trials were conducted to compare the effect of multinutrient blended fertilizer – also called boron blend (NPSB: 18. 1 N – 36.1 P2O5 – 6.7S – 0.71B) on the yield and yield components of food barley

For assessing the effect of boron fertilization on the micronutrient concentration in plants, its uptake in edible portion and crop yield in cauliflower–cowpea-okra cropping sequence in an Inceptisol of North East India field experiments were conducted during the year 2015–17 at Horticultural Experimental Farm, Assam Agricultural University, Jorhat. Five graded levels of boron were applied (0, 0.5

The aims of this research were to investigate the effects of microbial bio-fertilizer (BF) application on physicochemical properties of sandy-clay-loam (SCL) soil under three different soil moisture regimes in greenhouse-grown eggplant (Solanum melongena L.). Correlations between the physicochemical soil properties in a greenhouse condition were determined. The microbial bio-fertilizers included Azotobacter

Particulate organic matter is a part of the labile, easily decomposable, pool of soil organic matter; therefore its study in soil is very important. Estimating particulate organic matter through some related variables at an acceptable level of accuracy is very importance. In this study three model were utilized and compared for predicting particulate organic matter. (i) wavelet function of artificial

The soils of the Everglades Agricultural Area (EAA) are mainly organic soils (Histosols), and their artificial drainage promoted aeration and resulted in soil subsidence. Sugarcane (Saccharum spp.) nitrogen (N) requirement has been fulfilled historically by organic matter mineralization, so very shallow soils could be limiting N availability for the crop. The objectives of this study were to measure

Inclusion of a legume crop in a cropping system can improve soil physical and chemical properties, particularly in predominantly rice cultivating areas. Analysis of Variance (ANOVA) was performed between different soils and cropping systems to evaluate soil physical and chemical properties in Balod District of Chhattisgarh state of India. Among the soils, inVertisols, bulk density (BD) (p = .024),

Nitrogen (N) fertilization is crucial for maximizing maize (Zea mays L.) yield, but optimizing the amount of N to apply for maize must also consider potential impact on the environment from nitrate-N pollution. The dark green color index (DGCI) technology determines the greenness of maize leaves to assess maize N status. Spectrum Technologies used this DGCI technology to develop a smartphone app called

Soil phosphorus (P) loss risk and environmental impact can be assessed by different soil test indicators such as soil P storage capacity (SPSC), a site-specific and reliable measurement of soil P status. In this study, the changing trends of soil P saturation ratio (PSR) and SPSC in red soil (equivalent to Ultisol) were discussed after 10 consecutive additions of P solution with 20 mg P L−1, and the

Application of green manures substitutes use of chemical fertilizers, improves soil health, prevents soil degradation also ensures food security. Two years’ field experiment was laid out to determine the impact of Egyptian clover green manuring (GM) under varying nitrogen (N) levels on soil properties and maize production. Maize was grown using six N levels, i.e., 0, 50, 100, 150, 200, and 250 kg ha−1

Amelioration of saline soil is a requisite in order to increase crop productivity. A soil incubation study was performed for 60 days using digestate, humic acid, calcium humate and their combinations to investigate the influence on physical, chemical, microbial and enzyme activities of saline soil. Overall, digestate combined with calcium humate followed by humic acid treatments have shown their potency

Addition of more resistant organic materials, such as biochars, to soils not only enhances soil C sequestration but also can also benefit soil fertility. The aim of this study was to investigate the effect of two organic materials (sheep manure and vermicompost) and their biochars produced at two pyrolysis temperatures (300 and 500°C) applied at 5% (w/w) on the chemical fractions of Zn and Cu and some

Although cherry-tomato is becoming more popular in the last years, there are no specific recommendations for P and K fertilization or liming strategies for this specific variety. Our aim was to assess rates of P and K and liming strategies in order to improve the yield of cherry-tomato grown on an Oxisol with a limited P-availability. Two pot experiments were developed. In the first-one, a two-factor

A field evaluation of the stable isotopes (δ13C and δ15N) and their relationship among physicochemical and enzyme activities was conducted in Indian semi-arid agricultural soils. Composite soil samples were collected based on organic management (ORG), inorganic management (IM), integrated crop management (ICM) and precision farming (PF) experimental plots from the fall of September 2017 to October

This study investigated the relationship between a recently proposed alkaline hydrolysis method for estimating the chemical index of nitrogen (N) mineralization potential of soils and the activities of arylamidase and four amidohydrolases involved in hydrolysis of organic N (ON) in soils. Nitrogen mineralization was studied in 13 soils from uncultivated fields in Iowa, USA, by direct steam distillation

Evaluation of the relationship between soil properties and saffron yield estimation may contribute to agricultural planning in finding suitable lands for the growth of this valuable product. This study aimed to investigate the performance of artificial neural network (ANN), multiple linear regression (MLR), and adaptive neuro-fuzzy inference system (ANFIS) in terms of saffron yield estimation in some

Effect of slag-based gypsum (SBG) and commercial gypsum (CG) on maize was investigated in acidic and neutral soils. A randomized complete block design (RCBD) with seven treatments consisting of three levels (150, 450, and 750 kg ha−1) of SBG and CG with recommended dose of fertilizer (RDF) and one control was maintained. Application of SBG @750 kg ha−1 recorded significantly higher (8.61 and 8.69 t

Peat is considered the conventional growing medium in most soilless culture systems. The high cost of peat and the urgent need of agricultural wastes recycling encouraged the scientists and soilless culture users to search for an alternative growth medium where optimal growth conditions are achieved and help in the safe disposal of wastes. In the current study, peanut shell (PS) and corn wastes (CW)

Glauconite is a potassium (K) bearing mineral, which generally contains 6–10% K2O and mostly available in various natural deposits in India. Glauconite mineral was converted to nano-particle form by grinding in a high-energy ball mill. The release of K from glauconite nano-particle in soil was studied in a pot culture experiment. Five different treatments viz., 0 mg K2O kg−1, 100 mg K2O kg−1, 150 mg

Root-knot nematodes (RKN; Meloidogyne spp.) cause enormous yield reductions in vegetable crops. While nematicides are the most effective method for controlling RKN in carrot (Dacatus carota), the efficacy of non-fumigant nematicides, compared to fumigants, is still not fully understood. The objective of this study was to evaluate the effect of 1,3-dichloropropene, a fumigant nematicide, and fluensulfone

(2020). Correction. Communications in Soil Science and Plant Analysis. Ahead of Print.

Iron (Fe) is chronically low in saline sodic soils. The effect of nano iron (Fe) particles complexed with salicylic acid (nFe-SA) on the Fe supply and salinity tolerance of Pistacia vera ‘Akbari’ seedlings were compared with seedlings grown in a control Hoagland nutrient solution amended with Fe-EDDHA. The saline treatments were prepared by adding 0 (control), 100, and 200 mM NaCl to the nutrient solutions

Particulate organic matter is a part of the labile, easily decomposable, pool of soil organic matter; therefore its study in soil is very important. Estimating particulate organic matter through some related variables at an acceptable level of accuracy is very importance. In this study three model were utilized and compared for predicting particulate organic matter. (i) wavelet function of artificial

Nitrogen (N) fertilization is crucial for maximizing maize (Zea mays L.) yield, but optimizing the amount of N to apply for maize must also consider potential impact on the environment from nitrate-N pollution. The dark green color index (DGCI) technology determines the greenness of maize leaves to assess maize N status. Spectrum Technologies used this DGCI technology to develop a smartphone app called

Soil contamination with heavy metals has resulted in a reduction of crop productivity and soil quality. We studied the effects of rice straw biochar (RB), rice straw compost (RC), and their mixtures at rates 0.5% and 1.0% on soil biochemistry and dry weight of the canola plant (Brassica napus) grown in contaminated soil with heavy metals. The results showed that the addition of the RB or RC alone or

ABSTRACT To track changes in organic matter (OM) in peat soils, analytical techniques are needed that effectively characterize their chemical components. Pyrolysis-gas chromatography/mass spectrometry is a useful method for obtaining a chemical “fingerprint” of OM. To obtain representative fingerprints, the pyrolysis process should be highly reproducible and representative of the original sample; however

Maize (Zea mays L.) production in the developing countries takes place on marginal landscapes using indigenous planting methods that conflict with appropriate row spacing (RS) and plant to plant spacing (PPS). A study was conducted to determine the effect of different RS, variable plant densities and different planting methods on maize grain yield. This study was conducted for two years at three locations

Predicting soil infiltration at the field scale with high contents in calcareous materials is important for a better understanding of land management. The objectives of this study were to develop a GIS-based digital modeling of soil infiltration in calcareous soils using environmental data in Iran. The soil infiltration data with three replications were measured at 92 points at the regional scale.

There is now a consensus that global warming causes climate change and is a worldwide threat, which presents a great challenge for the 21st century. Arid, semiarid, and tropical regions of the world including Pakistan, where climate change is enhancing salinization and is restricting plant growth and production by reducing nutrient uptake and increasing osmotic stresses. Keeping in view all these interlinked

A two-year experiment (2014 and 2015) was conducted to investigate the conjoint effect of organic manures, plant growth-promoting rhizobacteria (PGPR), and inorganic fertilizers on soil fertility, nutrient uptake, plant biomass, and fruit yield of bell pepper. The experiment was conducted during kharif season on sandy loam soils of mid-hills of Himachal Pradesh. Treatment T6 [application of 75% N +

Long-term sustainability is the concern of today’s agriculture. A long-term field experiment (since 1983) comprising of 14 treatments with different combinations of inorganic (NPK) and organic fertilizers (such as farmyard manure, wheat cut straw and Sesbania aculeate as green manure) was conducted to evaluate their effect on soil physico-chemical properties under a rice–wheat system. There was significant

The objective of this study was to evaluate the potential effect of biochar (BC) and humic acid (HA) application on the improvement of plant growth and the acquisition of nutrients by plant roots of calendula (Calendula officinalis L.). A factorial experiment with a completely randomized design was conducted to investigate the HA and BC effects on the growth, physiological characteristics, and nutrients

Acidic soils are susceptible to nutrient insufficiencies and imbalances. Combined application of biochar and other organic amendments is a renowned strategy for ameliorating acid soils and enhancing soil fertility. The incubation experiment investigated the effect of biochar and poultry litter on chemical properties and nutrients availability of acidic soil. 400 g of soil was thoroughly mixed with