Effect of Fertilizer Nitrogen, Phosphorus, and Potassium on Yield and Nutrient Content of Lee Soybeans 1

1972 ◽  
Vol 64 (6) ◽  
pp. 743-746 ◽  
Author(s):  
M. S. Bhangoo ◽  
D. J. Albritton
Keyword(s):  
Nutrient Content ◽  
Fertilizer Nitrogen ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Nitrogen, phosphorus and potassium content in maize dry biomass under the effect of different levels of mineral fertilization

2019 ◽  
Vol 11 (4) ◽  
pp. 311-316
Author(s):  
L. Nenova ◽  
M. Benkova ◽  
Ts. Simeonova ◽  
I. Atanassova
Keyword(s):  
Nitrogen Content ◽  
Leaf Growth ◽  
Nutrient Content ◽  
Potassium Content ◽  
Mineral Fertilization ◽  
Dry Biomass ◽  
Control Variant ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

Abstract. The aim of the study was to assess the influence of different fertilizer doses on the content of macroelements (nitrogen, phosphorus and potassium) in dry biomass and grain of maize during the 2016 – 2018 period. A field experiment with fertilization of maize was carried out on Alluvial-meadow soil (Fluvisol) in the region of Tsalapitsa village, near Plovdiv. Three variants of mineral fertilization were studied V2 (N15P10K0), V3 (N20P15K0) and V4 (N25P20K0), and a control variant V1 (N0P0K0) – without fertilization. It was established that N% content in maize dry biomass was affected significantly by the variants of fertilization (18% of the variance). Significant differences (P≤0.05) between the control variant and all the variants of fertilization were established. Increasing the fertilizer dose, nitrogen content in dry biomass increased, too. The highest was the average content of nitrogen in maize leaves (0.94%), followed by the cobs (0.71%) and the lowest was the content in the stems (0.58%). Phosphorus and potassium content of dry biomass were affected significantly by the year of the study (10% and 9% of the variance, respectively). At the 7-8th leaf growth stage of maize, the highest nutrients content (N, P, K) in dry biomass were reported. With aging of plants the nutrient content in their biomass decreased. Nitrogen, phosphorus and potassium content in maize grain was significantly affected by the year of the experiment. Mineral fertilization had impact mostly on the nitrogen content of the grain, which was the highest in V3 variant, accepted as optimal – 0.66% on average.

scholarly journals Nitrogen, phosphorus and potassium status of rice co-planted with a novel phytoremediator, Marsilea minuta L.

2018 ◽  
Vol 43 (2) ◽  
pp. 211-218
Author(s):  
U Hassi ◽  
MT Hossain ◽  
SMI Huq
Keyword(s):  
Oryza Sativa L ◽  
Negative Relationship ◽  
Nutrient Content ◽  
Control Treatment ◽  
P Value ◽  
Aquatic Fern ◽  
Significant Negative Relationship ◽  
Significant Difference ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

A pot experiment was carried out to assess the effects of arsenic and aquatic fern (Marsilea minuta L.), when applied as a phytoremediator, on the nutrient content (nitrogen, phosphorus, and potassium) of rice. Two sets of pot experiments were conducted in the net house on rice (Oryza sativa L.) together with aquatic fern (M. minuta) and on aquatic fern (M. minuta) alone where soils were treated with 1 mg/L As-solution at 80% arsenite and 20% arsenate. No significant difference was found in the nitrogen, phosphorus, and potassium concentrations of rice, in the absence of arsenic, whether grown in the presence of M. minuta or not. The uptake of total nitrogen, phosphorus, and potassium was found to be 36%, 23%, and 22% more, respectively in rice plants treated with M. minuta and arsenic over the control treatment, although the results were statistically insignificant. However, a significant negative relationship was found between arsenic and root nitrogen (P-value of 0.0017) when grown together with arsenic and M. minuta. A significant positive relationship was found between arsenic and shoot phosphorus (P-value of 0.0025) as well as arsenic and shoot and root potassium (P-values were 0.0045 and 0.0115, respectively). The results indicate that Marsilea minuta might be used as a phytoremediator of As together with rice plants.Bangladesh J. Agril. Res. 43(2): 211-218, June 2018

scholarly journals Cat's claw creeper vine, Macfadyena unguis-cati (Bignoniaceae), invasion impacts: comparative leaf nutrient content and effects on soil physicochemical properties

2012 ◽  
Vol 60 (6) ◽  
pp. 539 ◽  
Author(s):  
Christine Perrett ◽  
Olusegun O. Osunkoya ◽  
Cameron Clark
Keyword(s):  
Invasive Plant ◽  
Habitat Type ◽  
Nutrient Content ◽  
Leaf Chemistry ◽  
Nutrient Input ◽  
Invasion Impacts ◽  
Phosphorus And Potassium ◽  
Environmental Weed ◽  
Disturbed Habitats ◽  
Nitrogen Phosphorus

Macfadyena unguis-cati (L.) Gentry (Bignoniaceae) is a major environmental weed in coastal Queensland, Australia. There is a lack of quantitative data on its leaf chemistry and its impact on soil properties. Soils from infested vs uninfested areas, and leaves of M. unguis-cati and three co-occurring vine species (one exotic, two native) were collected at six sites (riparian and non-riparian) in south-eastern Queensland. Effects of invasion status, species, site and habitat type were examined using univariate and multivariate analyses. Habitat type had a greater effect on soil nutrients than on leaf chemistry. Invasion effect of M. unguis-cati on soil chemistry was more pronounced in non-riparian than in riparian habitat. Significantly higher values were obtained in M. unguis-cati infested (vs. uninfested) soils for ~50% of traits. Leaf ion concentrations differed significantly between exotic and native vines. Observed higher leaf-nutrient load (especially nitrogen, phosphorus and potassium) in exotic plants aligns with the preference of invasive plant species for disturbed habitats with higher nutrient input. Higher load of trace elements (aluminium, boron, cadmium and iron) in its leaves suggests that cycling of heavy-metal ions, many of which are potentially toxic at excess level, could be accelerated in soils of M. unguis-cati-invaded landscape. Although inferences from the present study are based on correlative data, the consistency of the patterns across many sites suggests that M. unguis-cati may improve soil fertility and influence nutrient cycling, perhaps through legacy effects of its own litter input.

The relationship between the yields of eight varieties of Nigerian maize and content of nitrogen, phosphorus and potassium in the leaf at flowering stage

1972 ◽  
Vol 79 (3) ◽  
pp. 391-396 ◽  
Author(s):  
Akinola A. Agboola
Keyword(s):  
Grain Yield ◽  
Critical Level ◽  
Nutrient Content ◽  
Critical Levels ◽  
Flowering Stage ◽  
Growing Seasons ◽  
Phosphorus And Potassium ◽  
High Yielding Varieties ◽  
The Relationship ◽  
Nitrogen Phosphorus

SUMMARYStudies of the relationship between yield and content of N, P and K in the ear leaf of eight varieties of Nigerian maize, tested for three growing seasons, indicated that the varieties have different critical nutrient levels, although the values obtained for individual varieties were not significantly different from the pooled average critical level for any of the nutrients. The critical levels ranged from 2·85 to 3·19% N, 0·20 to 0·27% P and 2·06 to 2·60% K, while their pooled averages were 3·10% N, 0·23% P and 2·44% K.High ear leaf nutrient content was not a guarantee of high grain yield, and ear leaf nutrient values of low-yielding varieties were similar to those of the high-yielding varieties.

Diagnostic leaf analysis for stone fruit. 7. Effects of fertilizer nitrogen, phosphorus, and potassium on leaf composition of peach

1976 ◽  
Vol 16 (82) ◽  
pp. 775 ◽  
Author(s):  
DR Leece
Keyword(s):  
Sandy Loam ◽  
Practical Importance ◽  
Phosphorus Concentration ◽  
Fertilizer Nitrogen ◽  
Leaf Analysis ◽  
Loam Soil ◽  
Phosphorus And Potassium ◽  
Peach Trees ◽  
Leaf Composition ◽  
Nitrogen Phosphorus

The effects of fertilizer nitrogen, phosphorus and potassium on the leaf composition of Halehaven peach trees were measured for two seasons in a factorial experiment conducted in a block of mature, bearing trees on a sandy loam soil. Fertilizer nitrogen increased the leaf concentrations of nitrogen, iron, copper, manganese and zinc, and decreased the concentrations of potassium, calcium, magnesium and boron. Phosphorus concentration was not changed. Effects of fertilizer phosphorus and potassium on leaf composition were very slight and would not have been of practical importance in diagnosis by leaf analysis.

scholarly journals Effet Du Fumier Sur Le Bilan Des Éléments Nutritifs Des Champs Dans Le Terroir De La Néma Au Saloum (Sénégal)

2018 ◽  
Vol 14 (27) ◽  
pp. 126
Author(s):  
Ismaïla Coly ◽  
Babacar Diop ◽  
Arfang Ousmane Kémo Goudiaby
Keyword(s):  
Agricultural Production ◽  
Nutrient Balance ◽  
Ground Level ◽  
Nutrient Content ◽  
Constant Weight ◽  
Agricultural Potential ◽  
Phosphorus And Potassium ◽  
On Farm ◽  
Positive Effect ◽  
Nitrogen Phosphorus

In the land of Nema, fields show low agricultural potential due to high human and climatic pressure. To increase their agricultural production, the populations have opted either for the use of chemical fertilizer or for the supply of manure through the Agriculture-Livestock integration. This paper focuses on evaluating the effect of on-farm use of manure on groundnut pod and groundnut production, and nutrient balance at the field level. 20 square plots of 2m each were used per field on the monitored farms. The hay and pod samples were taken therein, weighed, and dried in an oven at 60° C to a constant weight. This work was carried out for both fertilized fields and unfertilized fields (controls). In these same farms, samples of manure produced were collected and analyzed. The production of peanut and groundnut pods in the fertilized fields and in the control fields shows an overall positive effect of the manure on the yields in the land of the Néma. Taking into account the figures of the average deficits, the nitrogen, phosphorus, and potassium balance is deficient in ground-level groundnut peanut fields. This is due to the low manure doses per hectare and its low nutrient content.

scholarly journals Efisiensi Pemberian Air dan Kompos Terhadap Mineralisasi NPK Pada Tanah Regosol

2018 ◽  
Vol 14 (2) ◽  
pp. 105-122
Author(s):  
Venus Nikiyuluw ◽  
Rudy Soplanit ◽  
Adelina Siregar
Keyword(s):  
Organic Matter ◽  
Data Analysis ◽  
Water Supply ◽  
Design Method ◽  
Nutrient Content ◽  
Randomized Design ◽  
Decomposition Of Organic Matter ◽  
Completely Randomized Design ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Good soil contains sufficient nutrient content for plants. Some of the most important nutrients in the soil include nitrogen, phosphorus, and potassium. However, regosol soil cannot provide enough nutrients and water. The objectives of this study include: 1) comparing the volume of water given with a frequency of 1, 2 or 3 days for NPK nutrient availability on regosol soils; 2) determining the amount of NPK nutrients available after 30 days of incubation by giving different compost doses; 3) determining the interaction between the frequency of water supply and decomposition of organic matter in providing NPK nutrients to regosol soils. This study used a completely randomized design method with a 3 × 3 factorial pattern with 3 replications, therefore there were 27 experimental units. Data analysis of the observed variables was done using variance analysis with SAS program ver 9.0 and if there was a real treatment effect followed by a different test between treatments using BNT (5%). Compost applied to the soil was done, this was indicated by a low C / N value of 14.3 and in accordance with the SNI value standards of 10-20. The results of the study showed that the application of water and organic matter independently has a significant effect on the N content, P, and K in the ground. Whereas, the interaction between the two treatments of water frequency application and organic matter had no significant effect on the levels of N, P, and K in the soil. The conclusion of this study, with the application of water once every 3 days and the treatment of 300g/pot organic matter (B2) was best to provide the highest Ntotal value (0.53%), P available (17, 50 mg/kg), and Kexch (2.03 me/100g). Keywords: compost, frequency of water supply, regosol   ABSTRAK Tanah yang baik memiliki kandungan hara yang cukup bagi tanaman. Beberapa unsur hara yang terpenting dalam tanah antara lain ialah nitrogen, fosfor dan kalium. Tetapi tanah regosol tidak dapat menyediakan unsur hara dan air dengan cukup. Tujuan dari penelitian ini antara lain: 1) membandingkan volume air yang diberikan dengan frekwensi 1, 2 atau 3 hari sekali untuk ketersediaan hara NPK pada tanah regosol; 2) menetapkan banyaknya unsur hara NPK tersedia setelah 30 hari inkubasi dengan pemberian dosis kompos yang berbeda; dan 3) mengetahui interaksi antara frekwensi pemberian air dan dekomposisi bahan organik dalam menyediakan hara NPK pada tanah regosol. Penelitian ini menggunakan metode Rancangan Acak Lengkap dengan pola faktorial 3 × 3 dengan 3 ulangan sehingga terdapat 27 satuan percobaan. Analisis data dari variabel yang diamati menggunakan analisis ragam dengan program SAS ver 9.0 dan jika terdapat pengaruh perlakuan yang nyata dilanjutkan dengan uji beda antar perlakuan menggunakan BNT (5%). Kompos yang diaplikasi ke tanah sudah matang, hal ini ditandai dengan nilai C/N yang rendah yaitu 14,3 dan sesuai dengan standar nilai SNI yaitu 10-20. Hasil penelitian menunjukkan bahwa pemberian air dan bahan organik secara mandiri memberikan pengaruh nyata terhadap kadar N, P, dan K dalam tanah. Sedangkan, interaksi antara kedua perlakuan air dan bahan organik tidak berpengaruh nyata terhadap kadar N, P, dan K dalam tanah. Kesimpulan dari penelitian ini, dengan pemberian air 3 hari sekali dan perlakuan bahan organik 300g/pot (B2) adalah dosis yang lebih baik untuk mendapat nilai Ntotal, Ptersedia dan Kdd tertinggi yaitu N total (0,53%), P tersedia (17,50 mg/kg), dan K dd (2,03 me/100g). Kata kunci: frekwensi pemberian air, kompos, regosol

Studies on White Yam (Dioscorea rotundata) II. Changes in Nutrient Content with Age

1972 ◽  
Vol 8 (2) ◽  
pp. 107-115 ◽  
Author(s):  
R. A. Sobulo
Keyword(s):  
Nitrogen Fertilizer ◽  
Nutrient Content ◽  
Potassium Content ◽  
Foliar Analysis ◽  
Dioscorea Rotundata ◽  
White Yam ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

SUMMARYVariation in the percentage of nitrogen, phosphorus and potassium content of a variety of white yam, grown without fertilizer, and the nutrients removed per acre by various portions of the plant, were determined. The time to apply fertilizers, and the most suitable portion of the plant for foliar analysis, were deduced from the changes in nutrients with age. The effect of nitrogen fertilizer on yield, and the nutrient content of the harvested tuber, were studied. The influence of a yam crop in a rotation is discussed.

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