scholarly journals Response of tuberose to different levels of nitrogen, phosphorus and potassium fertilizers

2022 ◽  
Vol 11 (3) ◽  
Author(s):  
Haider Mukhtar
Keyword(s):  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

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 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.

Effect of Different Levels of Nitrogen, Phosphorus and Potassium on the Growth and Yield of Cabbage

2002 ◽  
Vol 1 (5) ◽  
pp. 548-549 ◽  
Author(s):  
Razaullah Khan ◽  
Sher Ahmed . ◽  
Salimullah Khan . ◽  
Fayaz Ahmed . ◽  
Meer Zaman . ◽  
...  
Keyword(s):  
Growth And Yield ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

The use of nutrient bioassays to assess the response of Eucalyptusgrandis to fertilizer application. 1. Interactions between nitrogen, phosphorus, and potassium in seedling nutrition

1993 ◽  
Vol 23 (1) ◽  
pp. 1-6 ◽  
Author(s):  
John Dighton ◽  
Helen E. Jones ◽  
Jan M. Poskitt
Keyword(s):  
Maximum Growth ◽  
Fertilizer Application ◽  
P Uptake ◽  
Nutrient Supply ◽  
Wood Production ◽  
Root Bioassay ◽  
Phosphorus And Potassium ◽  
K Concentration ◽  
Nitrogen Phosphorus ◽  
Different Levels

The nutritional requirements of Eucalyptusgrandis Hill ex Maiden seedlings were studied in glasshouse pot experiments. Nitrogen (N), phosphorus (P), and potassium (K) demand was assessed by bioassays, in which the uptake of tracers (15N, 32P, or 86Rb) by roots excised from the seedlings grown at different levels of nutrient supply was measured. A pilot study showed that there was an inverse relationship between nutrient supply and influx. The measured influx was affected by the length of time that the roots were stored before the bioassay was applied. In a 33 N, P, and K factorial nutrient experiment, growth was primarily influenced by N. Maximum growth occurred at the highest level of supply of each of the three nutrients. N and K influx in the root bioassay was inversely related to foliar N and K concentration, but P uptake was not related to foliar P concentration. These results indicate that the root bioassays are more sensitive determinants of nutrient limitation than. foliar analysis. Interactions between N and P and between N and K alter the stem:leaf ratio, which may be of importance in optimizing wood production.

scholarly journals Yield, quality and foliar nutrient concentration of 'Orlando' tángelo under different fertilizer regimes

1969 ◽  
Vol 85 (1-2) ◽  
pp. 41-47
Author(s):  
Agenol González-Vélez ◽  
Gerardo Ruiz-Sifre
Keyword(s):  
Nutrient Concentration ◽  
Fruit Weight ◽  
Foliar Nutrient Concentration ◽  
Foliar Nutrient ◽  
Cumulative Production ◽  
Foliar Concentrations ◽  
Yield Quality ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

An experiment was done to evaluate the effect of different levels of nitrogen, phosphorus and potassium fertilization on the yield, quality and foliar nutrient concentration of 'Orlando' tángelo in a Corozaf clay soil. Nitrogen levels evaluated were 0,85.2,170 and 341 kg/ha. Levels of phosphorus evaluated were 0,12.4, 24.8 and 49.6 kg/ha; and potassium levels were 0, 47.8, 94.6 and 188 kg/ha. A significant linear response was found between the nitrogen application and the cumulative production of fruits per tree. High application of nitrogen was related to high cumulative production. No significant relationship was found between the phosphorus and potassium levels and the cumulative production. The application of different levels of nitrogen, phosphorus, and potassium had no effect on the average fruit weight and the quality of fruits in terms of pH, brix, acidity and brix/acidity rate. The different levels of nitrogen significantly affected the foliar nutrient concentration of nitrogen, calcium, potassium and phosphorus. Different applications of phosphorus significantly affected the foliar concentrations of calcium and potassium. The levels of potassium had no significant effect on the foliar concentrations of the different elements evaluated.

scholarly journals Crambe (<i>Crambe abyssinica</i>) Cultivation under Different Levels of Fertilization with Nitrogen, Phosphorus and Potassium

2017 ◽  
Vol 08 (09) ◽  
pp. 2031-2039 ◽  
Author(s):  
Ana Carolina F. de Vasconcelos ◽  
Lúcia Helena G. Chaves ◽  
Josely Dantas Fernandes ◽  
Gilvanise Alves Tito
Keyword(s):  
Crambe Abyssinica ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels
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