Micronutrient Status Of Soils Research Articles

Assessment of Micronutrient Status in Jasmine (Jasminum azoricum L.) Growing Soils of Huvina Hadagali Taluk, Vijayanagara District of Karnataka, India

The present study was conducted during winter (November‑December, 2022) in Jasmine growing area of Huvina Hadagali Taluk, Vijayanagara District to assess the soil micronutrient status in Jasmine growing area and analysed for their fertility parameters. A total of 60 soil samples were collected, of which 30 surface (0‒20 cm) and 30 subsurface (20‒40 cm) soil depths covering six villages namely Huvinahadagali, Hanakanahalli, Vinobhanagara, Meerakornahalli, Devagondana-halli and Thippapura. In surface soil, available micronutrients boron, zinc, iron, copper and manganese ranged from 0.45 to 1.28, 0.24 to 0.98, 1.17 to 7.90, 0.30 to 3.76 and 2.44 to 22.52 mg kg-1, respectively. Mean soil pH was 7.96, mean soluble salt was 0.27 dS m-1 and soil organic carbon ranged from 2.40 to 6.80 g kg-1. In subsurface soil, available micronutrients boron, zinc, iron, copper and manganese ranged from 0.36 to 1.09, 0.16 to 0.80, 0.96 to 6.76, 0.16 to 2.72 and 1.84 to 20.86 mg kg-1, respectively. Mean soil pH was 8.06, mean soluble salt was 0.32 dS m-1 and soil organic carbon ranged from 1.60 to 6.00 g kg-1. The results showed that depending on the nutrient nature, their concentration was either found in the range of deficit, or sufficient or in excess due to poor nutrient management practices like continuous use of chemical fertilizers and less use of organics which results in poor soil fertility leading to low yield and low quality of Jasmine flowers.

Macro and Micronutrient Status under Different Land Use Types in the University of Benin

This experiment was conducted to ascertain the macro and micronutrient status of soils under different land uses: Arable, Fallow, Residential, and Silvicultural land. Three different sites were carefully selected for each land use (replicates). Auger points were taken at 0-15 cm and 15-30 cm depths for each location, and samples were collected for laboratory analysis. Parameters measured included pH, TOC, TN, Av. P, K, Ca, Mg, Na, S-SO4, B, Cl, Cu, Fe, Mn, Mo, Zn, and soil particle contents. Results showed that pH in the top 15 cm ranged from very slightly acidic in silviculture and arable land to moderately acidic in fallow land, while residential land was neutral. pH, TOC, N, P, K, Ca, Mg, Na, and sand content all had their highest values in the topsoil (0-15 cm), except at the pH depth (15-30 cm) of Residential and Silvicultural land, K at Silviculture, and Clay contents. At the 0-15 cm depth, arable land had the highest significant (p<0.05) values of boron, manganese, and molybdenum and recorded the least value of Fe (258.7 mg/kg). Residential area had the highest values of Cl, Cu, Fe, and Zn (20.93 mg/kg). Silvicultural land had the highest values of B and the least significant (p<0.05) values of Cl, Mn, and Zn at 0-15 cm. While in the 15-30 cm depth, B, Cl, and Cu contents did not differ significantly across land uses. Fe and Zn recorded their highest significant values in residential, while Mn and Mo had their highest values in the arable land.

Assessment of Available Major and Micronutrient Status of Soils under Varied Cropping Systems of N.T.R district, Andhra Pradesh

Assessment of Available Major and Micronutrient Status of Soils under Varied Cropping Systems of N.T.R district, Andhra Pradesh

The Impact of Integrated Nutrient Management Practices on Post-harvest Soil Micronutrient Status of Upland Paddy

The Impact of Integrated Nutrient Management Practices on Post-harvest Soil Micronutrient Status of Upland Paddy

MICRONUTRIENTS (Zn, Cu, Fe, Mn, B) AVAILABILITY STATUS IN THE SOILS OF SARGODHA DISTRICT, PUNJAB, PAKISTAN


 
 
 Soil micronutrient deficiency is a major factor in achieving the optimal yields of the crops. To find a possible solution for this deficiency is surveying the micronutrient status of soils at a specific site. Thus current research focused on variability of soil properties and indicated the spatial pattern of soil micronutrients in Sargodha district, Punjab, Pakistan. 40000 soil samples were collected through Random soil sampling to assess soil micronutrient status at a depth of 0-15cm. . Soil samples were analysed to measure the soil Zinc (Zn), Copper (Cu), Iron (Fe), Manganese (Mn) by DTPA extraction method and quantified by Flame Atomic Absorption Spectroscopy. Hot-water soluble (HWS) Boron (B) was determined by spectrophotometer. In this study, properties of soil were investigated with the help of statistical and interpolation methods (Kriging). The available Zn, Fe, Cu, Mn and B ranged from 0.1 to 5 mg/kg, 0.2 to 10 mg/kg, 0.1 to 5 mg/kg, 0.2 to 10 mg/kg and 0.1 to 4.74 mg/kg, respectively, with mean value of 0.82 mg/kg, 4.9 mg/kg, 0.87 mg/kg, 4.04 mg/kg and 0.5 mg/kg, respectively, with standard deviation 0.35, 1.9, 0.383, 1.8, and 0.14, respectively. Regarding “Poor” class out of 40,000 analysed samples, 13% samples were deficient in Zn, 0% in Cu, 43% in Fe, 2% in Mn, and 41% in B. Regarding “Marginal” category 63% samples were at marginal deficient/adequate in Zn, 14% in Cu, 0% in Fe, 87% in Mn, and 59% in B. Regarding “Adequate” category, 24% samples were at adequate level in Zn, 86% in Cu, 57% in Fe, 11% in Mn, and 0% in B. The alarming situation was appeared for B which demands immediate mitigating steps to cover up the deficiency and should be incorporated essentially in fertilizer recommendation.
 
 

Assessment of Available Macro and Micronutrient Status in Soils of Mansala-Kayikoro, Kita Mali

Background: The soil fertility assessment is crucial for sustainable agriculture and plant yields. The knowledge of the trophic level of agricultural soil fertility is mandatory in order to define the development of food crops due to the lack of soil fertility assessment in this region and the decrease in crop yields. Methods: In this context, an investigation was carried out to study the fertility status of the Mansala-Kayikoro soils and some essential soil properties, such as pH, CEC, OM, EC etc. Ten soil samples were collected from farming areas and analyzed for macronutrients, micronutrients and essential soil physicochemical properties. Result: Soils of the Kayikoro area were highly acidic to slightly acidic in reaction with a low to high organic carbon (OC) content. According to the data, the cation exchange capacity (CEC) was deficient. The available macronutrients such as N, P and K content in the soils were found below the requirement of plant. The concentration of micronutrients such as iron, copper, manganese and zinc was slightly low in the analyzed samples.

Assessment of Micronutrient Status in Soils Derived from Three Parent Materials on the Jos Plateau, Nigeria

Parent materials play significant roles in determining the resultant characteristics of various soils. However, not much information is available on their micronutrient status of soil of the Jos Plateau. Hence, the objective of this study was to assess plant available Cu, Zn, Mn and B in soils derived from migmatite, granite gneiss and biotite granite parent materials on the Jos Plateau. Seven profile pits were dug in each geologic unit and soil samples obtained using guidelines in the soil survey manual. Available Cu, Zn, and Mn in soil samples were determined using the 0.1 M HCl extraction method and data collected was subjected to one-way analysis of variance. The results indicated that there were significantly higher contents of available Cu in the A horizon for soil derived from migmatite than in those over biotite granite or granite gneiss. Mean available Cu contents in the A horizon were 1.61 (± 0.35), 1.7125 (± 0.96), and 3.33 mg/kg (± 0.16) for granite gneiss, biotite granite and migmatite respectively; whereas for the B horizon mean contents were 2.06 (± 0.40), 2.98 (± 1.31), and 4.13 mg/kg (± 1.93) for granite gneiss, biotite granite and migmatite respectively. Generally, there were no significant differences in distribution of Mn, Zn and B among the geologic units. Implying that soils derived from migmatite, granite gneiss and biotite granite seems to behave similarly in contents of available Cu, Mn, Zn and B. Also, soil particle size had a significant moderate relationship with Cu and may influence its distribution in these soils.

Bioavailability of Micronutrient Cations in Rice as Influenced by Inorganic Nitrogen Dynamics in Soil under Typic Haplustepts

ABSTRACT Crop establishment methods play a vital role in the predominance of nutrient forms. Nitrogen dynamics in the soil can alter micronutrient availability and uptake. Four treatments each replicated thrice, comprising of three methods of rice establishment viz., puddled transplanted rice (PTR), unpuddled transplanted (UPTR), and direct seeded rice (DSR) in different combinations of rotation with conventionally tilled lentil (CTL) and zero till lentil (ZTL) were compared for their effect on inorganic nitrogen in the soil and its consequent effect on the micronutrient availability in soil and their uptake by rice grain. As per the results obtained from the study, the different establishment techniques with associated treatments after 7 years of continuous cultivation did not have any significant effect on general soil properties like pH, electrical conductivity (EC), organic carbon (OC), and cation exchange capacity (CEC). Treatments had a significant effect on soil nitrogen content and uptake and on soil micronutrient status and their uptake by rice as estimated after harvest of the rice crop. UPTR-ZTL crop rotation with crop residue management and biopriming with Azotobacter was found to be the most efficient management practice and performed better than the conventional crop establishment techniques like PTR and CTL systems. Nitrogen content in soil and plant N uptake showed positive correlations with micronutrient uptake by the rice grain. Significant positive correlations were obtained with the uptake of Fe, Mn, and Zn. Nitrogen dynamics (irrespective of crop establishment methods) in soil especially ammoniacal N, had a positive effect on the cationic micronutrient uptake by the crop, but results were not conclusive enough to suggest the role of N forms on uptake and translocation of micronutrient cations.

The micronutrient status of some soil supporting oil palm plantationin Nifor, Benin City, Benin

This study was conducted to assess the micronutrient status of soils under three different management practices at the Nigerian Institute for Oil Palm Research (NIFOR), Benin City, Edo State, Nigeria. Soil samples were collected from three different fields Research (NIFOR), Benin City, Edo with different management practices. The samples were air dried and analyzed for Fe, Zn, Cu, and Mn contents using standard method. Data was subjected to ANOVA and correlation studies. Result showed that soil micronutrient status was generally low as revealed by their estimated levels of availability: field 53 (Mn = 0.0333; Zn = 3.723; Cu = 2.04; Fe = 6.4), field 56 (Mn = 0.0367; Zn = 3.737; Cu = 1.12; Fe = 7.0939), field 71 (Mn = 0.0167; Zn = 3.860; Cu = 2.89; Fe = 7.243). Fe and Zn were above critical level for the 3 fields. Mn was below the critical level for the 3 fields and was significantly higher in field 56 (Orlu and Kulfo series) (p≤ 0.05). They were all similar. Fe was significantly different in field 53 (Kulfo and Alagba series) but similar in fields 56 and 71 (p≤ 0.05). Cu was significantly different in the 3 fields tested with field 71 (Orlu and Alagba series) higher than the critical level. Correlation studies showed that pH had a positive and significant correlation with Fe and Zn as observed in fields 71 and 56 (r = 0.9934, P≤ 0.05) and (r = 0.9997, P ≤ 0.05) respectively. Cu was the only micronutrient that has correlation with clay on each of the fields: 53, 56 and 71 (r = 0.9929, P≤0.05) (r = 0.9988, P≤ 0.05) and (r = 0.9967, P ≤ 0.05) respectively. Strong correlation existed between clay and Fe in field 53 (r = 1, P≤ 0.05). The concentration of the micronutrients (Fe, Mn,Zn Cu), in field 53 were not extreme (neither the highest nor lowest) when comparing the three fields indicating that BMP (Best Management Practice) may be the best for maintaining good micronutrient level in soils supporting oil palm. Fields 53 and 56 is adequate in Fe and Zn but not adequate in Mn and Cu while field 71 was adequate in Zn, Fe, and Cu but not in Mn. Based on the result of this experiment, adequate fertilizers of these micronutrients as their respective sulphates or impurities should be added to maintain proper micronutrient level.

Spatial variability and delineation of management zones based on soil micronutrient status in apple orchard soils of Kashmir valley, India.

Knowledge and up-scaling of status, availability, and distribution of soil micronutrients are hugely significant for enhancing crop productivity and profitability. However, regional database entailing spatial variability of key micronutrients for a major apple-producing region like the Kashmir Himalayan Region (KHR) is missing. We investigated 588 topsoil samples between 2016 and 2017 (to 30cm depth) to estimate spatial variability of extractable Zn, Cu, Mn, and Fe; develop spatial maps; and delineate potential management zones (MZs) in apple orchards using geo-statistical methods. Soil sampling was performed post-harvest season. Principal component analysis and fuzzy c-mean clustering were performed to develop MZs. Results exhibited wide variation, with high coefficient of variation (%) for Mn and Cu (123.9 and 114.4, respectively) and low (71.6) and medium (104) variability for Fe and Zn. Mean concentrations followed the order: Fe > Mn > Cu > Zn, with deficiencies evident towards central and northern regions of the study area. The best-fitted model was exponential. The nugget/sill ratio values were 0.41, 0.08, 0.37, and 0.38 for Zn, Cu, Mn, and Fe, respectively, indicating strong spatial dependence for Cu and moderate dependence for Fe, Zn, and Mn. Correlations between elevation, slope, and soil pH with micronutrients were negative, whereas with soil organic carbon and electrical conductivity positive relationships were identified. Three principal components accounted for 67·18% data variance. Based on the fuzzy performance index and modified partition entropy, five MZs were delineated, which exhibited variations from each other. These MZs highlighted the need for specific supplemental provisions in increasing soil fertility and apple productivity.

Status of available micronutrients in soils of Neem Ka Thana tehsil, Sikar district of Rajasthan

The study was conducted to evaluate available micronutrients (Fe, Zn, Cu and Mn) status and their relationship with some of the soil properties. In general, textural class of soils was found to be in the category of sandy loam, sandy clay loam, loamy sand and loam.The pH of soils varied from 7.3 to 8.9, EC varied from 0.03 to 1.11 dSm-1 with a mean value of 0.14 dSm-1, Organic carbon varied from 0.02 to 1.05 g kg-1 with a mean value of 0.37 g kg-1, CaCO3 ranged from 0.77 to 17.43 g kg-1 with a mean value of 4.20 g kg-1. DTPA- Zn, Fe, Cu and Mn ranged from 0.02 to 1.84 mg kg-1(mean 0.39 mg kg-1), 2.20 to 12.86 mg kg-1(mean 4.87mg kg-1), 0.15 to 9.68 mg kg-1(0.89 mg kg-1) and 3.38 to 14.70 mg kg-1(8.89 mg kg-1), respectively. The available micronutrients had positive and significantly relationship with silt, clay, and organic carbon of soils whereas, negative one with sand, calcium carbonate and pH of the soils. The deficiencies of Zn, Fe and Cu in these soils were 92, 49 and 14 % respectivelywhereas available Mn was found adequate in all the soils.

Effect of Integrated Phosphorus Management on Macro and Micronutrient Status of Soil in Bt-Cotton

Aim: To evaluate the impact of integrated use of phosphorus on soil fertility in Bt-Cotton.
 Study Design: The experiment was laid out in randomized block design with three replications.
 Place of Study: At College Farm, Agricultural College, Bapatla, Guntur district.
 Methodology: After the preliminary layout, Tulasi-BG II hybrid of cotton was used as a test crop, with a spacing of 90 cm x 60 cm in the experimental site. Farmyard Manure @ 10 t ha-1 was applied 10 days prior to sowing while phosphorus solubilising bacteria @ 5 kg ha-1 was applied one day before sowing. Phosphorus was applied as per the treatments basally at sowing whereas, the recommended dose of nitrogen and potassium (120 and 60 kg ha-1, respectively) were applied in four equal splits at 20, 40, 60, and 80.
 Results: The treatments showed no significant influence on available nitrogen and potassium but, comparatively higher values of nitrogen and potassium were observed in organic treated plots. The available phosphorus content was markedly influenced by level of phosphorus as well as components of integration at all the crop growth stages. Highest available phosphorus was recorded on integration of maximum dose of phosphorus with Phosphorus solubilising bacteria (PSB) and Farmyard manure (FYM). The available micronutrient contents in soil did not show any marked difference among the treatments at all the stages of crop growth.
 Conclusion: Application of phosphorus along with Phosphorus solubilising bacteria (PSB) and Farmyard manure (FYM) can reduce the phosphorus requirement to crops as well as improves soil health.

Effect of biochar on physico-chemical properties of acidic soil

A field experiment was conducted at farmer’s field in Byrasandra village of Shidlaghatta, Chikkaballapura to study the effect of biochar on chemical properties in acidic soil during Kharif 2017. The field trail included seven treatments with three replications. The results revealed that application of Recommended dose of fertilizers + 125 per cent of biochar equivalent of carbon in FYM recorded higher primary, secondary and micronutrient status in soil and increased pH, EC, organic carbon and significantly decreased Exchangeable Al. The study clearly showed that in acidic soils, application of Recommended dose of fertilizers + 125 per cent of biochar equivalent of FYM is more beneficial in reducing soil acidity and bulk density.

Mapping of Soil Micronutrients (Fe, Mn, Cu, Zn) in the Transition Zone of Northwestern Foothill of Shivaliks of Kathua District Using GIS

Aim: To analyze and map the soil micronutrient status in the transition zone of NW foothills of Shivaliks of Kathua Region using GIS.
 Methodology: Composite surface soil samples from two hundred and six (206) locations distributed randomly due to undulated topography across the whole of the district were collected at the depth of 0-15 cms using global positioning system (GPS). Inverse distance weighting (IDW) technique was adopted to generate prediction maps of the soil properties. The process of digitization and generation of maps was carried out with ArcGIS 10.3.
 Results: After soil sample analysis, the available copper content in the soil of hilly areas varies from 0.4 to 14.4 mg kg-1 with a mean value of 3.75 mg kg-1. Available Zinc content ranged from 0.25 to 5.60 mg/kg respectively. The available Manganese content of the surface soils varied between 5.60 to 78.10 mg kg-1 with a mean value of 23.97 mg kg-1. Available Iron content ranged from 11.30 to 92.00 mg/kg with a mean value of 38.57 mg kg-1. The available copper content in the soil of plain areas varies from 2.08 to 34.90 mg kg-1 with a mean value of 8.94 mg kg-1. The minimum and maximum values of available copper content lies in higher range. Available Zinc content ranged from 0.25 to 5.60 mg kg-1 respectively. According to the map, available zinc is visualized lowest in plains due to raised soil pH. The available manganese content of the surface soils varied between 2.500 to 57.40 mg/kg with a mean value of 27.03 mg kg-1. Available Iron content ranged from 0 to 66.10 mg kg-1 with a mean value of 41.68 mg kg-1.
 Conclusion: The mapping was done successfully with micronutrients varying from low to high range. The technique was found to be effective in identifying the micronutrients availability throughout the study region, thereby helping policy makers to frame fertilizer distribution and application policy for future.

Herbaceous diversity and biomass under different fire regimes in a seasonally dry forest ecosystem

The present work deals with the impact of forest fire over herb community along with changes in soil micronutrient status and C (carbon) storage. The present investigation was carried out in Bhoramdeo wildlife sanctuary, India. The entire area was divided into four distinct sites, i.e., no fire, low fire, medium fire (MFZ) and high fire zones depending upon geo-referenced data and ground truth verification. Quantification of the herb was done within 1 ha grid plots by laying random quadrats of 50 × 50 cm. Soil sampling was done at 0–10 cm and 10–20 cm depths. The micronutrient status of the soil was analysed through atomic absorption spectrophotometer. Most studies focuses on forest land degradation through depletion of soil macronutrient status under fire incidence. The present work involves a new approach to evaluate the impact of different fire regimes on herb community along with changes in soil micronutrient status. MFZ reported highest species, families, density, biomass and C storage. Zn (zinc), Mn (manganese), S (sulphur), nitrate N (nitrogen) and ammonical N level decreased with the gradual increment of the soil depth from 0 to 20 cm under various fire regimes. Cu (copper) level increased with the gradual increase in the soil depth from 0 to 20 cm under various fire regimes. C stock and biomass varied significantly in different fire regimes. Species such as Cassia tora, Cynodon dactylon, Eragrostis tenella and Setaria glauca recorded high C storage under MFZ and represented their higher presence and regeneration.

Total and Available Micronutrient Status in Soils of Derived Savanna Ecology of Oyo State, Nigeria

The potentially available and total micronutrient status in soils of derived savanna ecology of Oyo State, Nigeria were assessed and compared with standard critical values in soils. Soil samples were collected from a land measuring 285m2 on a line transect with the aid of a stainless soil auger. The sampling depths were 0 -15 cm, 15 – 30 cm, 30 – 45 cm and 45 – 60 cm respectively. The Physico-chemical properties and micronutrient content of the soil were determined using standard methods. The mobility factor of the micronutrients revealed the following trends Zn > Fe > Mn > Cu. In all, the concentration of Mn was relatively constant irrespective of the soil depth. This study revealed that the micronutrients (Fe, Mn, Zn, and Cu) were adequate and well supplied in the soils of the area, and therefore, deficiencies of the elements are quite unlikely. Generally, the soils contained Fe, Mn, Zn, and Cu above the critical level for crop production. The application of organic matter would help to improve the overall fertility of the soil. Activities that hastens up mineralization of organic materials should be minimized in managing soil health for optimum nutrient availability. Soil testing is recommended before fertilizer use to prevent nutrient imbalance or toxicity.

Micronutrient imbalance of sapota orchard in table lands of semi arid region of Rajasthan, India

Micronutrient status of sapota crop was assessed by analyzing soil and plant samples from table lands ofsouth eastern Rajasthan. Surface and sub surface soil samples were extracted with diethylene triamine pentaacetic acid (DTPA), and plant samples (including leaf and petiole) digested with di-acid mixture for the estimationof available iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn). The DTPA extractable micronutrients in thesoil samples followed the order as Mn> Fe> Zn> Cu. The mean values of surface extractable DTPA Mn, Fe, Znand Cu varied from 15.2 to 8.4, 8 to 3.4, 0.74 to 0.17 and 0.35 to 0.02 mg kg−1 respectively. Total Fe, Mn, Zn and Cuof leaf samples varied from 89.41 to 231.24, 22.2 to 97.61, 0.62 to 48.12 and 4.35 to 19.78 mg kg−1, respectively.Total Fe, Mn, Zn and Cu in petioles varied from 33.52 to 284.51, 11.31 to 69.26, 0.54 to 36 and 2.0 to 18.48 mgkg−1, respectively. Unlike soil micronutrient status, leaf sample analysis showed high Mn and Cu concentration,which resulted in Zn and Fe deficiency, resulting in shortened internodes or rosette disorders in sapota trees.

English

English

Appraisal of Macro and Micronutrient Status of Soils of Washim Road Farm of Dr. PDKV Akola, Maharashtra, Using GPS

The present study was conducted during the year 2018 and 2019 at Department of Soil Science and Agricultural Chemistry, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra with an aim to know the macro and micronutrient status of soils of Washim road farm, Dr. PDKV Akola. Grid based (GPS) forty four (44) surface (0-20 cm depth) soil samples were collected by grid survey method at 200 m distance from Washim road farm and analyzed as per standard procedure for judging chemical properties and available nutrient status of soil. The results indicate that all the soils pH under study were slightly alkaline to moderately alkaline in reaction and it ranged from 7.5 to 8.6 and soils were free from soluble salt hazard (EC 0.13 to 0.38 dSm-1). Organic carbon content were ranged from 2.34-8.97 g kg-1, soils of Washim road farm was moderately calcareous to calcareous due to presence of CaCO3 in soil. The available major nutrient content in these soils showed very low status for N (100.35-175.61 kg ha-1), available P (13.25-22.4 kg ha-1), and very high for available K (340.14-539.04 kg ha-1). While the available S, it ranges from 7.58-16.4 mg kg-1. The available micronutrient content in these soils showed very low to moderate status for available Fe (2.05-5.96 mg kg-1 ), available Mn (0.82-4.47 mg kg-1) and available Zn (0.12-0.88 mg kg-1) indicates very low to medium and high for available Cu (0.73-3.12 mg kg-1).

Study of Micronutrient Status in Soil of Solapur District

Study of Micronutrient Status in Soil of Solapur District