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 CONTENT IN OAT GRAINS OF YAKOV VARIETY AT DIFFERENT TIMES OF PROCESSING CROPS BY DESICCANTS

2018 ◽  
Vol 12 (4) ◽  
pp. 57-61
Author(s):  
Татьяна Печникова ◽  
Tat'yana Pechnikova ◽  
Вера Колесникова ◽  
Vera Kolesnikova
Keyword(s):  
Nitrogen Content ◽  
Field Experience ◽  
Potassium Content ◽  
Analytical Laboratory ◽  
Laboratory Studies ◽  
Research Results ◽  
Experimental Field ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The article presents research results of 2015 - 2016 on the study of the effect of desiccants and timing of its application on oat sowing of Yakov variety on the content of nitrogen, phosphorus and potassium in the main products. Field experience was laid in the training and experimental field of JSC “Uchkhoz Iyulskoe IzhGSKhA”, laboratory studies were conducted at the inter-departmental analytical laboratory of Izhevsk SAU. It was found that spraying of oats of Yakov crops with Raundup, Basta and Reglon Super preparations in 3 days after the onset of the milk-dough-like grain state in 2015 and 6 days later in 2016 promotes an increase in the nitrogen content of grains. According to the content of phosphorus and potassium in the grain of oats, there are no differences in the variants of the experiment.

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.

scholarly journals The Effects of Biopesticide and Fusarium oxysporum f.sp. vanillae on the Nutrient Content of Binucleate Rhizoctonia-Induced Vanilla Plant

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Haryuni Haryuni ◽  
Andre Fahriz Perdana Harahap ◽  
Supartini ◽  
Achmadi Priyatmojo ◽  
Misri Gozan
Keyword(s):  
Fusarium Oxysporum ◽  
Nutrient Content ◽  
Potassium Content ◽  
Nitrogen And Phosphorus ◽  
Randomized Design ◽  
Two Factors ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Plant Nutrient Content ◽  
Phosphorus Levels

Binucleate Rhizoctonia (BNR) fungi are essential for the germination of vanilla seeds. Chemical control of the soil-borne pathogen might adversely affect BNR. The purpose of this study is to determine the effect of Nicotiana tabacum extract biopesticides and Fusarium oxysporum f.sp. vanillae (Fusarium) on vanilla plant nutrient content induced by BNR. Materials and Methods. The research design was completely randomized design with two factors and three replications. The first factor was biopesticide (dosage of 0, 10, 20, and 30 ml/seedling), and the second factor was the application of Fusarium. Results. The increase in the nitrogen, phosphorus, and potassium content of vanilla was affected by biopesticides and Fusarium inoculation. Fusarium inoculation has no significant effect on nitrogen and phosphorus levels but significantly affects potassium levels. The biopesticide dosage is significant for nitrogen, phosphorus, and potassium. The interaction of biopesticides with Fusarium inoculation did not significantly affect the parameters of nitrogen and phosphorus content, but significantly affected potassium content. Conclusion. The application of biopesticides and Fusarium inoculation after induction of BNR can increase nitrogen, phosphorus, and potassium content of vanilla plants.

scholarly journals Carbon, Nitrogen, Phosphorus, and Potassium Content Partitioning of Cocoa Tree Parts in Serian, Sarawak

2017 ◽  
Vol 33 (3) ◽  
pp. 180
Author(s):  
A Nurafiza ◽  
Y.K Tee ◽  
M Boney ◽  
L.S Albert ◽  
O Rozita ◽  
...  
Keyword(s):  
Carbon Stock ◽  
Nutrient Content ◽  
Main Stem ◽  
Potassium Content ◽  
Total Carbon ◽  
Total Biomass ◽  
Fibrous Root ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Cocoa Tree

Many claim that commodity plantations release carbon stock and thus contribute to climate change effects. Yet, studies on cocoa carbon stock and nutrients are limited, especially in Malaysia therefore, objective of this study was to determine if there were any significant differences of carbon stock in five different tree parts of cocoa, namely branches, main stem, main roots, fibrous roots, and leaves. Twenty cocoa trees (aged 10 years old) at Kpg Muara Ahi, Serian Sarawak were destructively sampled in March, 2016, and cut into five tree compartments prior to analysis by using CHN and AAS Analyzer. Mean comparison was carried out by using one-way ANOVA SPSS 21.0 software. Total cocoa carbon stock was 27.32 M C ha -1 which branches contributing 47% from the total carbon (12.92 Mg C ha -1 ), followed by main stem (5.42 Mg C ha -1 ), taproot (4.05 Mg C ha -1 ), fibrous root (2.49 Mg C ha -1 ) and leaves (2.44 Mg C ha -1 ). Branches and main stems contained higher total carbon stock due to high total biomass (kg), how-ever, main root showed significantly (p<0.01) highest in carbon content with 42.58% in terms of per tree parts. As for the nutrient content, leaves showed signifi-cantly(p<00.1) the highest in nitrogen, phosphorus and potassium content compared to other tree parts with N 2.55 ± 0.04 ppm; P 0.20 ± 0.006 ppm and K 2.68 ± 0.24 ppm, respectively. From the study, it showed that cocoa tree does help in storing carbon. By knowing N, P and K partitioning within cocoa tree, this enable further study to be done especially in applying fertilizer for optimum yield.

scholarly journals Effect of pollinator cultivars on nutrient content in some Turkish hazelnut cultivars

2021 ◽  
pp. 13-19
Author(s):  
Huseyin Irfan Balik
Keyword(s):  
Nutrient Content ◽  
Corylus Avellana ◽  
Potassium Content ◽  
Fe Content ◽  
Zn Content ◽  
Phosphorus And Potassium ◽  
Corylus Avellana L ◽  
Nitrogen Phosphorus

The main objective of this study was to assess the pollen effects on macro and micro nutrition elements on hazelnut cultivars (Corylus avellana L.). Tombul, Palaz, Çakıldak, Foşa and Allahverdi were used as main cultivars while Tombul, Palaz, Çakıldak, Foşa, Allahverdi, Sivri, Kalınkara and Yassı Badem were used as pollinator cultivars. In the study, it was investigated that the pollinator cultivars caused changes in some nutrition elements. The effects of the applications on nitrogen, phosphorus and potassium content were found to be statistically significant. It was determined that the nutrition element with the highest rate in the examined hazelnut cultivars is potassium. It has been observed that the amount of potassium is high in Tombul-pollinator treatments. The potassium content of Foşa and Çakıldak weres found to be higher than other cultivars. In Palaz and Yassı Badem- pollination treatments, it has been observed that the Ca content is generally lower than other treatments. Fe content was found to be significantly higher in Palaz-pollination treatments. The highest Mn and Zn content was obtained from Çakıldak. As a result, it has been revealed that pollinators may have an effect on nutrient content.

Réponse du soya à la fertilisation minérale en éléments majeurs NPK sur des sols classés de riches à excessivement riches en phosphore ou en potassium des Basses Terres du Saint-Laurent

2000 ◽  
Vol 80 (2) ◽  
pp. 261-270 ◽  
Author(s):  
G. Tremblay ◽  
J.-M. Beausoleil
Keyword(s):  
Seed Protein ◽  
Specific Weight ◽  
Major Elements ◽  
Available Phosphorus ◽  
Mineral Fertilization ◽  
Potassium Fertilization ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels ◽  
100 Seed Weight

In the scientific literature there are numerous studies on soybean response to major mineral NPK elements. But there are few research data on this topic for the Lowland soils of the Saint-Lawrence Valley. A 3-yr study was conducted in 1994, 1995, and 1996 on three representative soil types of the lowland Saint-Lawrence Valley region: Dujour, Sainte-Rosalie and Saint-Urbain. These soils are classified from rich to excessively rich in available phosphorus and potassium as measured by the Mehlich 3 method. Results of this study indicate that yield is rarely significantly influenced by levels of nitrogen, phosphorus or potassium fertilization. Moreover, there are no significant interactions among those elements and soybean grain yield. Other observed variables (specific weight, grain visual quality, 100-seed weight, seed protein and oil contents) were generally not affected by the different levels of nitrogen, phosphorus or potassium fertilization. There were few significant interactions between major elements and those variables. Generally, soybeans did not respond to NPK mineral fertilization on representative soils of the Lowland Saint Lawrence Valley region classified from rich to excessively rich in available phosphorus and potassium. Key words: Soybean, fertilization, nitrogen, phosphorus, potassium, yield

scholarly journals Yield Response of the Puerto Rico and Columnaris Coffee Cultivars in Two Latosols of Puerto Rico, as Affected by Different Levels of Nitrogen, Phosphorus, Potassium, and Lime

1969 ◽  
Vol 48 (3) ◽  
pp. 255-262
Author(s):  
Saulo J. Rodríguez ◽  
R. Bosque-Lugo ◽  
R. Pérez-Pérez ◽  
A. Rodríguez-Cabrera
Keyword(s):  
Puerto Rico ◽  
Plant Nutrients ◽  
Yield Response ◽  
Lateritic Soils ◽  
Nitrogen Levels ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

A set of four experiments with increasing levels of the three main plant nutrients and liming were established in two lateritic soils at two locations in the coffee-growing area of Puerto Rico. Two coffee cultivars were used in the experiments. The results obtained can be summarized as follows: 1. Nitrogen levels significantly affected coffee yields of the Puerto Rico cultivar in a Catalina clay at Maricao grown under shade. 2. Phosphorus and potassium did not significantly affect the yields of these coffee cultivars at the two locations. 3. Liming did not significantly affect the yields.

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