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

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.

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 Early fruiting in Synsepalum dulcificum (Schumach. & Thonn.) Daniell juveniles induced by water and inorganic nutrient management

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 399 ◽  
Author(s):  
Dèdéou Apocalypse Tchokponhoué ◽  
Sognigbé N'Danikou ◽  
Iago Hale ◽  
Allen Van Deynze ◽  
Enoch Gbènato Achigan-Dako
Keyword(s):  
Water Supply ◽  
Growth Traits ◽  
Relative Survival ◽  
Growth And Yield ◽  
Juvenile Period ◽  
Crop Species ◽  
Slow Growth Rate ◽  
Pharmaceutical Industries ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Background.The miracle plant,Synsepalum dulcificum(Schumach. & Thonn.) Daniell is a native African orphan crop species that has recently received increased attention due to its promise as a sweetener and source of antioxidants in both the food and pharmaceutical industries. However, a major obstacle to the species’ widespread utilization is its relatively slow growth rate and prolonged juvenile period.Method.In this study, we tested twelve treatments made up of various watering regimes and exogenous nutrient application (nitrogen, phosphorus and potassium, at varying dosages) on the relative survival, growth, and reproductive development of 15-months-oldS. dulcificumjuveniles.Results.While the plants survived under most tested growing conditions, nitrogen application at doses higher than 1.5 g [seedling]-1was found to be highly detrimental, reducing survival to 0%. The treatment was found to affect all growth traits, and juveniles that received a combination of nitrogen, phosphorus, and potassium (each at a rate of 1.5 g [seedling]-1), in addition to daily watering, exhibited the most vegetative growth. The simple daily provision of adequate water was found to greatly accelerate the transition to reproductive maturity in the species (from >36 months to an average of 23 months), whereas nutrient application affected the length of the reproductive phase within a season, as well as the fruiting intensity.Conclusions.This study highlights the beneficial effect of water supply and fertilization on both vegetative and reproductive growth inS. dulcificum. Water supply appeared to be the most important factor unlocking flowering in the species, while the combination of nitrogen, phosphorus and potassium at the dose of 1.5 g (for all) consistently exhibited the highest performance for all growth and yield traits. These findings will help intensifyS. dulcificum’s breeding and horticultural development.

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