A simplified method for the extraction and analysis of available nitrogen, phosphorus, and potassium in soils

1994 ◽  
Vol 25 (13-14) ◽  
pp. 2543-2560 ◽  
Author(s):  
R. Puchades ◽  
A. Llopis ◽  
M. D. Raigón ◽  
M. Peris‐Tortajada ◽  
A. Maquieira
Keyword(s):  
Available Nitrogen ◽  
Simplified Method ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals EFFECT OF FULZYME FERTILIZER, RICE RESIDUES AND DAP ON AVAILABLE OF SOME NUTRIENTS FOR THE SOIL OF BUDDED APRICOT SEEDLINGS PRUNUS ARMENIACA L. CV. "ZAGHINIA"

2020 ◽  
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Prunus Armeniaca ◽  
College Of Agriculture ◽  
Available Nitrogen ◽  
Soil Available Nitrogen ◽  
Prunus Armeniaca L ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Rice Residues

The study was conducted in the nursery of Hort. Dept., College of Agriculture and Forestry, Mosul University, Iraq, during 2018 season to study the response of budded "Zaghinia" apricot on seedlings rootstock to bio, organic and chemical fertilizers, and their effects on seedling growth. The studied factors were as follows: Bio fertilizer Fulzyme (0,1and 2 g. seedling-1 ), organic fertilizer (Rice residue) (0, 1 and 2 kg. seedling-1 ) and DAP fertilizers (0, 5 and 10 g. seedling-1 ). The study was performed by using split-split plots within factorial experiment in randomized complete block design (RCBD), with 3 factors and 3 replicates, by using 6 seedlings for each treatment. Treatment means were compared by using Duncan multiple levels at 5% p. the most important results obtained were as follows: 1 and 2 gm.seedling-1 of bio fertilizer (Fulzyme) and Chemical fertilizer (DAP) at the levels 5 and 10 g. seedling-1 affected significantly resulted in a significant increase in soil available nitrogen, while the addition of organic fertilizer (rice residues) and for both levels 1 and 2 kg. Seedling-1 gave a significant increase in nitrogen, phosphorus, ready-made potassium and pH of the seedling soil, and the bilateral interaction had a significant role in the growth of seedlings, especially the treatment of the interaction between the fertilizer (Fulzym) and organic fertilizer (Rice residues), which have a significant effect in giving the best results in available nitrogen, phosphorus and potassium in the soil, and the triple interference also gave a significant increase in all studied traits.

scholarly journals Comparative Study of Soil Properties under Gamhar (Gmelina arborea) Based Agrisilvicultural System

2021 ◽  
pp. 71-77
Author(s):  
Abhay Kumar ◽  
M. S. Malik ◽  
P. R. Oraon ◽  
Rakesh Kumar ◽  
Sheela Barla ◽  
...  
Keyword(s):  
Soil Properties ◽  
Soil Depth ◽  
Gmelina Arborea ◽  
Initial Value ◽  
Available Nitrogen ◽  
Available N ◽  
Sole Cropping ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Changes In Soil Properties

A two year experiment was conducted during kharif and rabi season of 2016-2017 and 2017-2018 at experimental site near Faculty of Forestry in main campus of Birsa Agricultural University, Ranchi, Jharkhand, India. Sole cropping and gamhar based agrisilviculture systems with four different intercrops (arhar, cowpea, greengram and mustard) were under investigation. To study the overall scenario of soil properties under agrisilviculture system, soil samples were analysed at different profile depths (0-15 and 15-30 cm) to measure the changes in soil properties under the influence of gamhar (Gmelina arborea) tree and intercrops grown in between. Soil pH, electrical conductivity (dsm-1), organic carbon (%), available nitrogen, phosphorus and potassium (kg ha-1) were found higher at the soil depth 0-15 cm as compared to 15-30 cm due to addition of organic residue on the surface soil. Soil OC, available N, P and K in 0-15 cm as well as in 15-30 cm profile was found to be statistically significant. It showed an increase from initial value in all the treatments in 2016-17 and 2017-18. The increase was more in gamhar based agrisilviculture system than in sole tree and sole crops in both the years.

scholarly journals Soil and Leaf Nutritional Studies and Status of Healthy and Declined Mandarin Orchards

2020 ◽  
pp. 162-168
Author(s):  
Prashant Joshi ◽  
Dhiraj Kadam ◽  
Mayur Gawande ◽  
Vishal Maval
Keyword(s):  
Total Nitrogen ◽  
Sulphur Content ◽  
Potassium Content ◽  
Surface Soils ◽  
Available Nitrogen ◽  
Exchangeable Calcium ◽  
Calcium Magnesium ◽  
Phosphorus And Potassium ◽  
Nutritional Studies ◽  
Nitrogen Phosphorus

The present investigation was carried out to determine soil and leaf nutritional status of some typical healthy and declined mandarin orchards of Amravati District (M.S) during 2016-19.Total twenty five representative surface and depth wise soil and leaf samples from healthy and declined mandarin orchards were collected and analyzed various nutrients in plant as well as leaf samples. The data analysis showed that total nitrogen content in healthy and declined mandarin orchards from surface soils varied from 0.045 to 0.093 % and 0.015 to 0.37% respectively. The available nitrogen, phosphorus and potassium content of healthy orchards surface soils varied from 200.0 to 265.7 kg ha-1 , 22.0 to 35.3 kg ha-1 , 320.0 to 665.0 kg ha-1 and in declined orchards it varied from 130.4 to 203.5 kg ha-1 , 17.8 to 21.3 kg ha-1 , 360.0 to 744.4 kg ha-1 respectively. The exchangeable calcium and magnesium together constitute more than 80% of exchange complex. The exchangeable calcium, magnesium and sulphur content in healthy orchards surface soils varied from 26.34 to 30.22 cmol (p+ ) kg ha-1 , 11.71 to 16.92 cmol (p+ ) kg ha-1 , 0.27 to 0.90 kg ha-1 and in declined orchards it varied from 29.00 to 31.98 cmol (p+ ) kg ha-1 , 12.07 to 13.71 cmol (p+ ) kg ha-1 , 0.36 to 0.69 kg ha-1 respectively. Micronutrients status of orange orchards showed that available copper, zinc, iron and manganese in healthy orchards surface soils varied from 2.20 to 5.60 ppm, 0.50 to 0.79 ppm, 4.50 to 6.29 ppm, 12.61 to 18.11 ppm and in declined orchards it varied from 1.90 to 2.48 ppm, 0.35 to 0.46 ppm, 3.40 to 5.00 ppm, 8.10 to 12.24 ppm respectively. Findings revealed that total nitrogen, available nitrogen, phosphorus, sulphur, zinc and manganese content found more supporting in healthy orchards than declined ones. Depth wise distribution showed that total nitrogen, available nitrogen, phosphorus and copper showed decreasing trend with the soil depth. The leaf nutrient content in the plant showed that nitrogen, phosphorus and potassium content in leaf of healthy orchards varied from 2.35 to 2.55%, 0.14 to 0.17%, 0.82 to 1.00% and in declined orchards it varied from 1.75 to 2.00%, 0.10 to 0.13%, and 0.84 to 1.70% respectively. Calcium, magnesium and sulphur content in healthy orchards varied from 3.00 to 3.90%, 0.60 to 0.74%, 0.21 to 0.19% and in declined orchards it ranged from 2.40 to 3.15%, 0.33 to 0.74%, and 0.19 to 0.23% respectively. Results pertaining to micronutrient showed that iron; manganese, copper and zinc in healthy orchards varied from 105.6 to 140.6 ppm, 21.72 to 34.62 ppm, 29.40 to 35.96 ppm, 30.45 to 39.18 ppm, and in declined orchards it varied from 70.66 to 100.00 ppm, 20.38 to 27.67 ppm, 21.72 to 26.05 ppm, and 17.24 to 25.00 ppm respectively. Results showed that a healthy orchard has significantly higher content of nutrient than declined orchards except potassium content

scholarly journals Available plant nutrients in soil as influenced by planting methods and herbicidal treatments

2019 ◽  
Vol 4 (1) ◽  
pp. 346-353
Author(s):  
Amandeep Singh Brar ◽  
Parmodh Sharma ◽  
Charanjit Singh Kahlon ◽  
U.S. Walia
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Weed Control ◽  
Cropping System ◽  
Conventional Tillage ◽  
Plant Nutrients ◽  
Available Nitrogen ◽  
Planting Methods ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

AbstractRice (Oryza sativa L.)-wheat (Triticum aestivum L.) is the predominant cropping system of North Indian region. Due to continuous following of rice-wheat cropping system every year, weed infestation particularly in wheat, has emerged a major problem resulting in reduced wheat yield and nutrient mining. Integration of suitable planting methods, along with effective weed control measures, can reduce the weed infestation and nutrient mining from the soil and can enhance available plant nutrients in the soil. To evaluate the influence of different planting techniques and weed control practices in wheat on available plant nutrients in soil, a field study was conducted at the department of Agronomy, Punjab Agricultural University, Ludhiana (India) for two consecutive years. The treatments comprised of five planting techniques: conventional tillage, zero till sowing without rice stubbles, zero till sowing in standing rice stubbles , zero till sowing after partial burning of rice stubbles and bed planting and five weed control treatments i.e. clodinafop 60 g/ha, clodinafop 60 g/ha fb 2, 4-D 0.5 kg/ha, sulfosulfuron 25 g/ha, mesosulfuron + iodosulfuron 12 g/ha and unweeded (control). The experiment was conducted in split plot design with planting methods in the main plot and herbicidal treatments in the sub plot with three replications. The results of the study showed that zero till sowing of wheat in standing rice stubbles observed significantly higher soil organic carbon, available nitrogen, phosphorus and potassium than conventional till wheat sowing after removal of rice residues. Although partial burning of rice stubbles also showed positive trend in soil organic carbon, available nitrogen, phosphorus and potassium but retort was less distinct than rice stubbles without burning. Further, zero tillage alone also showed improvement in soil organic carbon and available nitrogen, phosphorus and potassium over conventional tillage. Application of herbicides did not diverge soil organic carbon, but significantly improved the available nitrogen, phosphorus and potassium content in soil than the unweeded (control).

scholarly journals Effects of root pruning on the vegetative growth and fruit quality of Zhanhuadongzao trees

2010 ◽  
Vol 37 (No. 1) ◽  
pp. 14-21 ◽  
Author(s):  
S. Yang ◽  
S. Xing ◽  
C. Liu ◽  
Z. Du ◽  
H. Wang ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Vegetative Growth ◽  
Microbial Populations ◽  
Root Pruning ◽  
Total Acid ◽  
Available Nitrogen ◽  
Trunk Diameter ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The effects of root pruning on the vegetative growth and fruit quality of six-year-old Zhanhuadongzao (<I>Ziziphus jujube</I> Mill.) trees were evaluated. Three root pruning treatments (severe, moderate and light degree) were conducted at the distance of 3, 5 and 7 times trunk diameter from trunk on both inter-row sides of the trees, respectively. The results showed that the severe root pruning decreased the length of primary branch by 27.9% and the number of primary branches by 12.1% in contrast to the control of no root pruning. Compared to the control, both severe and moderate root pruning had no apparent effects on nitrogen, phosphorus and potassium contents of leaves after 35 days, but had significant effects after 161 days. Severe root pruning had larger effectiveness of controlling vegetative growth than the moderate one. By root pruning, the contents of vitamin C and total sugar were increased but the content of cypermethrin was decreased in fruits and no effects were found on total acid content of fruit and yield at harvest. In the rhizosphere soil, root pruning decreased the microbial populations and enzymes activities but increased the concentrations of cypermethrin, available nitrogen, phosphorus and potassium. It is proposed that the removal of root at 3 times trunk diameter distance from trunk was feasible to regulate the vegetative growth and fruit quality of Zhanhuadongzao tree.

scholarly journals Effects of Soil Tillage, Management Practices, and Mulching Film Application on Soil Health and Peanut Yield in a Continuous Cropping System

2020 ◽  
Vol 11 ◽  
Author(s):  
Dongqing Yang ◽  
Yan Liu ◽  
Ying Wang ◽  
Fang Gao ◽  
Jihao Zhao ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Green Manure ◽  
Management Practices ◽  
Soil Health ◽  
Available Nitrogen ◽  
Soil Layers ◽  
Pod Yield ◽  
Phosphorus And Potassium ◽  
Mulching Film ◽  
Nitrogen Phosphorus

Our objective was to optimize soil management practices to improve soil health to increase peanut (Arachis hypogaea L.) yield. We studied the effects of using rotary tillage with mulching film or without [rotary tillage with no mulching (RTNM)], plow tillage with mulching film or without, and green manure with mulching film (GMMF) or without [green manure with no mulching (GMNM)] over 3 years in Tai’an, China. Results showed that compared with RTNM treatment, GMNM and GMMF treatments significantly (P &lt; 0.05) increased soil organic carbon, enzymatic activity, and the available nitrogen, phosphorus, and potassium content. The dominant bacterial phyla in the soil across all treatments were Proteobacteria, Acidobacteria, and Actinobacteria. Bacterial richness and diversity in the soil were significantly (P &lt; 0.05) enhanced after GMMF and GMNM treatments compared with those after RTNM treatment. The linear discriminant analysis effect size analysis indicated that Chloroflexi abundance in the 0–10 and 10–20 cm soil layers changed significantly (P &lt; 0.05) after rotary tillage with mulching film and RTNM treatments, respectively, whereas that of Bacteroidetes changed significantly (P &lt; 0.05) in the 0–10 layer after GMNM treatment. The abundance of the Xanthobacteraceae family of Proteobacteria in both soil layers changed significantly (P &lt; 0.05) after GMNM and GMMF treatments. Redundancy analysis revealed that soil physical (soil bulk density and water content), chemical (soil organic carbon, available nitrogen, phosphorus, and potassium), and biological (soil enzymatic activity and nutrient content) characteristics affect the soil bacterial community. Changed soil quality indices may be favorable for leaf photo-assimilate accumulation. Compared with RTNM treatment, GMNM and GMMF treatments significantly increased photosynthesis rate in the peanut leaf and decreased intercellular carbon dioxide concentration. Our results showed that compared with that after RTNM treatment, the average pod yield after GMMF and GMNM treatments increased by 27.85 and 21.26%, respectively, due to increases in the pods per plant and plant numbers. The highest yield of all treatments was obtained from the GMMF-treated plot, followed by that from the GMNM-treated plots. Thus, taking into consideration the residual pollution caused by plastic films, we propose GMNM as a suitable strategy to improve soil physicochemical and microbial properties and to increase the peanut pod yield.

Evaluation of Soil Test Methods for Available Nitrogen, Phosphorus and Potassium in Direct-Seeded Rice–Wheat Cropping Sequence

2020 ◽  
Vol 6 (02) ◽  
Author(s):  
VIJAY KANT SINGH ◽  
POONAM GAUTAM ◽  
KHARAG SINGH ◽  
SUMAN SEN ◽  
VINEET KUMAR ◽  
...  
Keyword(s):  
Test Methods ◽  
Test Method ◽  
Coefficient Of Determination ◽  
Soil Test ◽  
Available Nitrogen ◽  
Available N ◽  
Direct Seeded ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

A study was carried out in an attempt to obtain simple and efficient soil test method(s) for determination of available nitrogen (N), phosphorus (P) and potassium (K) in Mollisols. Soil samples were collected before sowing of direct-seeded rice (DSR) and wheat in sequence to evaluate the soil test methods for available N, P and K. Methods used were wet-oxidation for organic carbon (OC); alkaline KMnO4 for available N; Olsen’s-P, AB-DTPA and Mehlich-I for available P; and NH4OAc-K, AB-DTPA and Mehlich-I for available K. Suitability of these methods for given soil nutrients was evaluated by comparing the R2 values (coefficient of determination) obtained from regression analysis. Results showed that the R2 values of obtained equations by using different combinations of soil test methods for the determination of available N, P and K in soil were highly significant in both the crops. Highest R2 value for DSR (0.442**) and wheat (0.898**) were observed with the combination of OC, Olsen’s-P, ABDTPA-K, and OC, Olsen’s-P, Mehlich-K, respectively. It showed that these combinations are more promising and superior over other methods.

scholarly journals Effect of Different Levels of Phosphorus and Zeolite on Yield, Nutrient Uptake and Phosphorus Use Efficiency of Rabi Onion Grown on an Inceptisols

Agropedology ◽  
2019 ◽  
Vol 30 (2) ◽  
Author(s):  
S.R. Shelke ◽  
◽  
B.D. Bhakare ◽  
C.N. Kishor Kumar ◽  
◽  
...  
Keyword(s):  
Recommended Dose ◽  
Phosphorus Use Efficiency ◽  
Farm Yard Manure ◽  
Available Nitrogen ◽  
Phosphatic Fertilizer ◽  
Use Efficiency ◽  
Phosphorus And Potassium ◽  
Post Graduate Institute ◽  
Nitrogen Phosphorus ◽  
Different Levels

A field experiment was conducted at Post Graduate Institute Instructional Farm of Mahatma Phule Krishi Vidyapeeth, Rahuri, during rabi 2017-2018 to study the effect of different levels of phosphorus and zeolite on yield and its use efficiency and availability of nutrients. There were eight treatments replicated thrice in RBD. The significantly highest bulb with 150% of the recommended dose of P2O5 175 kg along with 120 kg ha-1 of zeolite application followed by the zeolite @ 120 kg ha¬¬¬¬¬¬-1 + 125% P2O5of RDF. However, the highest phosphorus use efficiency was observed in the treatment with 75% P2O5 of RDF and recommended dose of nitrogen and potassium fertilizers along with 120 kg ha-1zeolite and 20 t ha-1 farm yard manure. The available nitrogen, phosphorus and potassium were significantly higher in treatment with zeolite @ 120 kg ha-1 + 150% P2O5 of RDF. Thus recommended dose of phosphatic fertilizer can be reduced by 25% when used along with 120 kg ha-1zeolite and recommended dose of nitrogen and potassium fertilizers for obtaining optimum yield of onion.

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