scholarly journals Soil fertility evaluation of rice soils of Lumbajong block of Karbi Anglong district under hill zone of Assam through nutrient indexing

2020 ◽  
Vol 15 (2) ◽  
pp. 81-85
Author(s):  
Nilim Kalita ◽  
Subal Maibangsa
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Available P ◽  
Chemical Fertilizers ◽  
Available Nitrogen ◽  
Rice Soils ◽  
Available N ◽  
Fertility Status ◽  
Nutrient Index ◽  
Soil Fertility Status

The Lumbajong block of Karbi Anglong district of Assam is characterized by undulating topography comprising of hillocks and lowland paddy fields. Cultivation of rice in traditional ways for years without adequate and balanced use of chemical fertilizers and with little or no use of organic manure have caused severe fertility deterioration resulting in stagnating or even declining productivity of the paddy field soils. Spatial distributions for organic carbon, available N, available P and available K were examined in the soil samples of selected rice fields in 102 different locations covering six villages in the block to evaluate the fertility status of the block. The study revealed that there is much variation in soil fertility status of soils developed on various land forms in the area as the soils were having low to high in organic carbon (0.42 to1.12 %), low to medium in available nitrogen (175.62 to 376 kg/ha) content; low in available P (3.86 to 28.29 kg/ha) and low to high in available K (71.68 – 439.04 kg/ha) contents. The soils of Lumbajong block were characterized as medium-medium-low-medium (MMLM) category based on the nutrient index calculated with respect to organic carbon, available N, available P and available K.

scholarly journals Assessment of Soil Fertility Status of Kanwara Minor Lift Canal Command Area in Banda District of Bundelkhand using Nutrient Index Values

2021 ◽  
pp. 98-104
Author(s):  
Chandrakant Chaubey ◽  
A. K. Chaubey ◽  
Amit Mishra ◽  
Narendra Singh ◽  
Gaurav Shukla ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Available P ◽  
Soil Parameters ◽  
Command Area ◽  
Available N ◽  
Fertility Status ◽  
Nutrient Index ◽  
Canal Command ◽  
Canal Command Area

A study was conducted to assess the fertility status of Kanwara minor lift canal command area using Nutrient Index values of different soil parameters under study in 2019-20. A systematic set of two hundred and eleven georeferenced soil samples were collected and analysed following the standard sampling and analytical procedure. The analysed values of different parameters were categorized in low, medium and high and further used in determination of the nutrient index. NI value of soil organic carbon was 1.16, 1.00 for available N, 1.47 for available P and 2.55 for available K respectively. Regarding the fertility class based on Nutrient Index values it was deficient in organic carbon, available N and available P while, sufficient in soil available K. This requires immediate attention towards the management of nutrients to restore the soil fertility and sustain crop productivity.

Changes in soil fertility status as influenced by continuous cropping and fertilizer application

1984 ◽  
Vol 102 (1) ◽  
pp. 215-218 ◽  
Author(s):  
K. N. Sharma ◽  
Bijay Singh ◽  
D. S. Rana ◽  
M. L. Kapur ◽  
J. S. Sodhi
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Farmyard Manure ◽  
Fertilizer Application ◽  
Available P ◽  
Organic Carbon Content ◽  
Continuous Cropping ◽  
Fertility Status ◽  
Combined Application ◽  
Soil Fertility Status

SummaryChanges in soil fertility status brought about by the application of P and K fertilizers and farmyard manure (FYM) to a fixed wheat-maize rotation for 10 years in a calcic ustochrept are reported. The treatments comprised three rates of P (0, 30 and 60 kg P2O5/ha), two rates of K (0 and 30 kg K2O/ha) and two rates of FYM (0 and 15 t/ha) applied to maize or wheat alone or to both the crops. Organic carbon and available P and K contents of the soil increased significantly with the addition of FYM. P application at 60 kg P2O5/ha nearly maintained the original level of available P even after 10 years of continuous cropping. However, a considerable and highly significant increase in available P was obtained with the combined application of P and FYM. Available K status of the soil remained more or less unaffected by K application. Organic carbon content, and available P and K contents were significantly higher in the plots that received fertilizers and manure for both the crops than in those where the application was to maize or wheat alone.

scholarly journals Soil Fertility Status and Nutrient Index in Different Tasar Silkworm Host Plants Growing Ecosystems of Purulia District, West Bengal, India

2020 ◽  
pp. 28-35
Author(s):  
T. Pandiaraj ◽  
Susmita Das ◽  
Manjappa . ◽  
Alok Sahay
Keyword(s):  
Soil Fertility ◽  
Host Plants ◽  
West Bengal ◽  
Soil Reaction ◽  
Available Phosphorus ◽  
Available Nitrogen ◽  
Fertility Status ◽  
Nutrient Index ◽  
Purulia District ◽  
Soil Fertility Status

This study was conducted to evaluate soil fertility status in the fourteen major tasar sericulture adopting villages in Purulia District, West Bengal. For this, a total of 160 surface soil samples (0-30 cm) were collected from dominant tasar sericulture villages along with the details regarding farmer’s name, soil type, host plants details, etc. The collected samples were air dried, sieved and analysed for various soil fertility parameters such as pH, EC, organic carbon, macro and micronutrients. The data on various parameters were categorized into low, medium and high classes based on soil fertility ratings and nutrient index was calculated. Results revealed that soil reaction in the study area varied from strongly acidic to moderately acidic with saline free soil. The available nitrogen was low level in all the tasar host plant growing regions. In all the study regions, medium range of available phosphorus, potassium and sulphur was observed. All the micronutrients were high in the study villages. Regard NIV, all the macronutrients except nitrogen showed medium nutrient index in most places. Fertility rate of available micro nutrients were high index in all the tasar growing villages.

scholarly journals Assessment of Soil Fertility Status Using Nutrient Index Approach in Cassava Farms of Rewa Province, Fiji

2021 ◽  
Author(s):  
H.K. Sachan ◽  
Deeksha Krishna
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Management Strategies ◽  
Available Phosphorus ◽  
Fertility Status ◽  
Index Approach ◽  
Nutrient Index ◽  
Calcium And Magnesium ◽  
Soil Fertility Status ◽  
Index Value

Background: Nutrient index methods and fertility indicators can be used to determine the fertility status of soils. The information can be used to develop soil management strategies for farmers. Methods: The research was conducted in the Rewa district of Fiji, with an aim to assess soil fertility status using the nutrient index approach. A total of 57 cassava-growing farms were selected from three sub-districts of Rewa province for the present investigation and collected soil samples were analyzed in accordance with standard procedures for evaluating chemical parameters and the status of available nutrients in the soil. Result: The study discovered that the soils of farms are acidic in reaction, have low levels of organic carbon, low to moderate levels of major primary nutrients, however, the soils had a high content of calcium and magnesium. The soil nutrient index value calculated of soil organic carbon and available phosphorus were recorded as low with 1.48 and 1.40 respectively. The NIV for nitrogen and potassium content was medium category values of 1.91 and 1.95, respectively. The nutrient index value calculated for exchangeable calcium and magnesium content was recorded as high with 2.75 and 2.35 values respectively.

scholarly journals Assessment of Soil Fertility Status Using Nutrient Index Approach of Ovu Sub-Clan, Delta State, Nigeria

2020 ◽  
Author(s):  
S.A. Ojobor ◽  
C.N. Egbuchua ◽  
R.A. Onoriasakpovwa
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Total Nitrogen ◽  
Soil Ph ◽  
Oil Palm ◽  
Phosphorus Content ◽  
Available Phosphorus ◽  
Fertility Status ◽  
Nutrient Index ◽  
Soil Fertility Status

Background: Amendment of soil fertility through regular nutrient assessment is a necessary intervention for sustainable crop production. Ovu, is a sub-clan in Delta State, Nigeria which comprised of: Ovu-Inland, Okoemaka, Ekpan, Urhodo, Okoroke and Oviorie that are mostly farmers without the knowledge of their soil fertility. The study investigated soil fertility status of Ovu Sub-Clan. Methods: Cassava, oil palm and plantain farms were randomly selected in the six community and 118 representative soil samples were taken. Soil pH, organic carbon, total nitrogen, available phosphorus content of soil and exchangeable bases were measured. Data were analyzed with descriptive statistics and Parker’s nutrient index was used to compare the fertility level. Result: The cassava, oil palm and plantain farms were slightly acidic mean values of 6.4±0.38, 6.5±0.31 and 6.4±0.30, respectively indicating slight acidity. Organic carbon was low to high while total nitrogen was high except at Okoemaka that was moderate (0.19±0.04%). Available phosphorus content was low to medium while exchangeable potassium and calcium were medium to high, exchangeable magnesium was low to medium. Nutrient index showed that soil pH was moderate and while total nitrogen was high. 

scholarly journals Spatial variability assessment in Central Farm Soils of Horticultural College and Research Institute, Periyakulam, Tamil Nadu using GIS techniques

2021 ◽  
Vol 108 (september) ◽  
Author(s):  
Sellamuthu K M ◽  
◽  
Kumaraperumal R ◽  
Malathi P ◽  
◽  
...  
Keyword(s):  
Organic Carbon ◽  
Spatial Variability ◽  
Soil Fertility ◽  
Tamil Nadu ◽  
Soil Samples ◽  
High Status ◽  
Available N ◽  
Fertility Status ◽  
Nutrient Index ◽  
Research Institute

A total number of 201 surface soil samples were collected encompassing the fields of Central Farm of Horticultural College and Research Institute, Periyakulam, Tamil Nadu. The GPS data (Latitude ºN and Longitude ºE) were recorded for each sampling site by using GPS-Garmin eTrex Vista HCX model. Field maps were collected and field number wise digitization was done. Soil samples were processed and anlaysed for soil physic-chemical and fertility parameters. Results indicated that soil samples were neutral to alkaline in reaction, non saline, and slightly calcareous to non calcareous in nature. Soil fertility groupings under percent category indicated that the soils were medium in soil organic carbon, low in available nitrogen, medium to high in available phosphorus, medium to high in available potassium, and low in available sulphur. With respect to DTPA extractable micronutrients, Fe, Zn, Mn and Cu were found to dominate by low to medium, low, high, medium to high categories, respectively. HWS-Boron was also recorded under the high category. The nutrient index values of the samples indicated a high status for organic carbon, available P and K, while medium for available N and adequate for available sulphur. With respect to micro nutrients, nutrient index values indicated that adequate for DTPA-Zn and very high for DTPA-Fe, Mn, Cu, and HWS-B. Thematic maps generated on the individual parameters depicted the spatial variability of parameters in the Central Farm of Horticultural College and Research Institute, Periyakulam. In the identified areas of poor fertility status, nutrient deficiency has to be eliminated by the application of organic and /or inorganic sources to maintain sustainable soil fertility status. Soil test-based fertilizer recommendations and micronutrients are to be followed to mitigate nutrient deficiencies and achieve sustained crop production and soil fertility.

scholarly journals Soil Fertility Evaluation and GPS-GIS Based Soil Nutrient Mapping of Krishi Vigyan Kendra, Palem, Telangana

2020 ◽  
pp. 139-145
Author(s):  
Kasthuri Rajamani ◽  
N. Hari ◽  
M. Rajashekar
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Soil Nutrient ◽  
Mean Value ◽  
Organic Carbon Content ◽  
High Status ◽  
Available Nitrogen ◽  
Entire Study ◽  
Study Results ◽  
Nutrient Index

Soil fertility evaluation of an area is an important aspect in the context of sustainable agriculture production. In the present investigation KVK, Palem farm was selected in the district Nagarkurnool of Telangana and studied physico-chemical, available macro and micronutrient status using Nutrient Index approach made with the study of 60 surface soil samples and were analyzed for pH, Electrical Conductivity (EC), Organic Carbon (OC), Nitrogen (N), Phosphorus (P), Potassium (K) and micronutrients (Fe, Mn, Cu and Zn). Study results indicated that a major proportion of area soils are neutral (62.08%) and non-saline (100%). The whole study area was low in organic carbon content, ranging from 0.40 to 0.45 with a mean of 0.42%, and available nitrogen also low in the entire study area varied from 150.53 to 188.16 kg ha-1 with a mean value of 165.67 kg ha-1. The percent distribution of available P varied from medium to high status (34.48 and 72.41%), where available K was categorized under high (100%) status. With regard to micronutrients, the soils were predominantly deficient in Zn (24.13%) followed by Fe (20.68%) and Mn (6.89%).

scholarly journals Nutrient uptake and soil fertility status after harvest of Bt cotton as influenced by graded levels of NPK fertilizers in Alfisol

2017 ◽  
Vol 9 (4) ◽  
pp. 2315-2326
Author(s):  
T. V. Jyothi ◽  
N. S. Hebsur
Keyword(s):  
Soil Fertility ◽  
Field Studies ◽  
Available Phosphorus ◽  
Growth Stages ◽  
Bt Cotton ◽  
Available Nitrogen ◽  
Npk Fertilizers ◽  
Fertility Status ◽  
Soil Fertility Status ◽  
Cu Uptake

Field studies were conducted at farmer’s fields in Jodalli (Kalghatgi taluk) and Pale (Hubballi taluk) villages in 2012-13 and 2013-14, respectively to investigate the effect of NPK fertilizers on uptake of nutrients by Bt cotton and soil fertility status at harvest in Alfisol. Among the different treatment combinations, the application of 150:50:75 kg N:P2O5:K2O ha-1 (N3P1K2) recorded significantly (P=0.05) higher nitrogen (132.63 kg ha-1), phosphorus (31.26 kg ha-1) and potassium (128.94 kg ha-1) uptake by cotton. The interaction effect with respect to total micronutrients (Zn, Fe, Mn and Cu) uptake remained non significant at all the growth stages. Graded levels of fertilizers failed to exert significant impact on pH and electrical conductivity, soil organic carbon and available micronutrients during both the years of experimentation. The application of 100:50:50 kgN:P2O5:K2O ha-1 (N1P1K1) recorded significantly (P=0.05) highest available nitrogen (150.39 kg ha-1), available phosphorus (37.98 kg ha-1) and available potassium (230.99 kg ha-1) compared to rest of the treatments. The lowest available nitrogen (134.92 kg ha-1), available phosphorus (31.65 kg ha-1) and available potassium (217.63 kg ha-1) were recorded in treatment receiving 150:50:75 kg N:P2O5:K2O ha-1 (N3P1K2).

scholarly journals Influence of varied crop residues and green biomass composts to rabi sorghum growing soils on uptake of major nutrients, microbial biomass and soil fertility status

2018 ◽  
Vol 10 (1) ◽  
pp. 185-189
Author(s):  
Ashwini Ambadi ◽  
D. Krishnamurty ◽  
Sathyanaran Rao ◽  
B. K. Desai ◽  
M.V. Ravi ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Organic Carbon ◽  
Soil Fertility ◽  
Crop Residues ◽  
C:N Ratio ◽  
Fertility Status ◽  
Combined Application ◽  
Cotton Stalks ◽  
Major Nutrients ◽  
Soil Fertility Status

A field experiment was conducted on vertisols (pH of 7.56 with organic carbon content of 0.55%) at Re- search Institute on Organic Farming, University of Agricultural Sciences, Raichur coming under northern Karnataka during rabi season of 2015-16 to study the Influence of varied crop residues and green biomass composts to rabi sorghum growing soils on uptake of major nutrients, organic carbon and soil fertility status. In general application of Cotton stalks, Redgram stalks, Glyricidia, combination of cotton and redgram stalks composts, FYM and combina- tion of organic and inorganic fertilizers helped to buildup soil nutrients with respect to organic carbon, available nitro- gen and phosphorus. Significantly higher nitrogen (227.3 kg ha-1), phosphorous (75.7 kg ha-1) and potassium (141.7 kg ha-1) uptake by rabi sorghum was recorded with combined application of recommended FYM (3 t ha-1) and NP fertilizers (50:25 kg N, P2O5 ha-1) (T14) followed by Cotton stalks +Redgram stalks + Glyricidia sp. with C:N ratio of 30:1 compost @ 50 kg N equivalent (T12: 222.0, 74.0 and 132.3 kg ha-1). The least uptake was recorded with abso- lute control (T15: 127.0, 42.0 and 71.7 kg ha-1). Similar trend was observed with organic carbon, available nitrogen and phosphorus. Combined application of recommended FYM (3 t ha-1) and NP fertilizers (50:25 kg N, P2O5 ha-1) followed by Cotton stalks +Redgram stalks + Glyricidia sp. with C:N ratio of 30:1 compost @ 50 kg N equivalent at the time of sowing recorded higher major nutrients uptake, microbial biomass and soil fertility status.

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