Influence of Different Rates of Nitrogen (N) and Phosphorus (P) Fertilizers on Growth and nutrient use efficiency of Hevea brasiliensis

The effect of N and P on nutrient concentrations, growth and vegetative traits of rubber (RRIM 2025) clone was evaluated. The treatments consisted 9 combinations of nitrogen (Urea) and phosphorus (Christmas Island Rock Phosphate – CIRP) with fixed rate of potassium (1.5 g per plant). The treatments were applied at different rates T1 (39.49 g), T2 (42.10 g), T3 (38.18 g), T4 (27.28 g) and T5 (26.10 g). The seedlings were planted in 15 cm x 30 cm filled with an Oxisol soil. Soil containing treatment (T2) significantly increased the seedlings growth like height and girth size than the remaining treatments. The results found that seedlings grown with T2 recorded higher chlorophyll content than the seedlings that were grown with T1, T4 and T5. Noticeably seedlings that was grown with T1 (39.49 g), T2 (42.10 g), and T3 (38.18 g) significantly had a higher shoot dry weight (SDW) than seedlings that were grown with T4 (27.28 g) and T5 (26.10 g). The same scenario was noticed in total dry weight (TDW) of the seedlings where T1 (68.64 g), T2 (73.30 g) and T3 (67.08) significantly recorded higher total dry weight than seedlings that were grown with T4 (50.29 g) and T5 (48.86 g). The result shows reflected a correlation between the SDW and TDW with respect to similar influence of the treatments on both the vegetative traits. Higher nitrogen content was recorded in seedlings rubber that were grown with T2 (3.57%) and significantly different from the seedlings that were grown with other treatments. The results of this study showed that higher dosage of fertilizer may not be necessary for the rubber seedlings. Application of fertilizers at the rate T2 which contains 2.0 g urea/plant and 7.5 g CIRP/plant could be considered as the optimum amount of fertilizer required for the rubber seedlings.

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PENGARUH KONSORSIUM PBRM (PLANT BENEFICIAL RHIZOSPHERIC MICROORGANISM) DALAM NUE (NUTRIENT USE EFFICIENCY) PADA PERTUMBUHAN JAGUNG (Zea mays L.)

AGRORADIX : Jurnal Ilmu Pertanian ◽

10.52166/agroteknologi.v3i1.1710 ◽

2019 ◽

Vol 3 (1) ◽

pp. 46-51

Author(s):

Tyas Nyonita Punjungsari ◽

Agung Setya Wibowo ◽

Intan Fuji Arriani ◽

Palupi Puspitorini

Keyword(s):

Leaf Area ◽

Plant Height ◽

Negative Impact ◽

Nutrient Use Efficiency ◽

Dry Weight ◽

Environment And Health ◽

Nutrient Use ◽

Wet Weight ◽

Use Efficiency ◽

Corn Plants

Corn farm processing in Blitar Regency is very dependent on fertilization using chemicals. The use of chemicals themselves has a negative impact on the environment and health if used continuously. Therefore we need a solution to increase the absorption of nutrients from the soil by plants (nutrient use efficiency), namely the use of beneficial microorganisms, namely PBRM (Plant Beneficial Rhizospheric Microorganism). The purpose of this study was to determine the effect of a consortium of soil from peanut plants in increasing the growth of corn plants. This research was conducted in May 2019 until September 2019. This study used RAK and was carried out in several stages, the first being planting corn seeds with a combination of NPK and PBRM Consortium, with each of 4 dose levels, K0, K1, K2, K3 Observation indicators consisted of plant height, leaf area, wet weight of cob, dry weight of cob. DMRT test results on the variable Plant Height that the treatment of K2 (1.5 kg Consortium per plant) showed the best results with an average of 7 DAP (9.40) 14 dd (40.96) 28 DAP (102.36) 35 DAP (141, 31) and 42 DAP (172.21) while the age of 21 DAP in the K3 treatment (3 kg consortium) with the average (74.80) which showed the best results on corn plant height. Based on analysis of variance of leaf area observations, it was shown that the administration of PBRM consortium in NUE had a significant effect on the age of 21 DAP, 28 DAP, 35 DAP, and 42 DAP but did not significantly affect the age of 14 HST. In the variable wet weights of K2 treatment cob showed the highest average of 527.33 grams while in the variable dry weight of K2 treatment cob showed the highest average of 493.63 gr.

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Nutrient use efficiency at ecosystem and species level in savanna areas of Central Brazil and impacts of fire

Journal of Tropical Ecology ◽

10.1017/s0266467405002865 ◽

2006 ◽

Vol 22 (2) ◽

pp. 191-201 ◽

Cited By ~ 76

Author(s):

Gabriela Bielefeld Nardoto ◽

Mercedes Maria da Cunha Bustamante ◽

Alexandre Siqueira Pinto ◽

Carlos Augusto Klink

Keyword(s):

Fire History ◽

Nutrient Use Efficiency ◽

Fire Regimes ◽

Nutrient Concentrations ◽

Nutrient Fluxes ◽

Resorption Efficiency ◽

Short Supply ◽

Central Brazil ◽

Nutrient Use ◽

Use Efficiency

Nutrient resorption efficiency of woody plants, litterfall and nutrient fluxes were investigated in a burned and an unburned cerrado plot between October 1997 and September 1999. A large experiment (Fire Project, Brasília, Brazil) on the effects of prescribed burnings was initiated in 1992. Cerrado plots were delimited and subjected to different fire regimes. Seasonal trend of litterfall was similar in both plots but the production in the burned plot was 42.2 g m−2 y−1 before the fourth prescribed fire (September 1998) and decreased by 22% 1 y after burning while in the unburned plot it was around 230 gm−2 y−1. Although nutrient concentrations in leaf litter were higher in the burned plot, the nutrient fluxes were 60–80% lower than in the unburned plot. Nutrient use efficiency (ecosystem level) was 4373 for P and 137 for N. Measured resorption efficiency for 10 cerrado species ranged from 14.5 to 37.2% for N and from 40 to 70.4% for P and in general, there were no differences between plots. N is in short supply, partly because of fire history, but the results, both at ecosystem and species levels (mean N/P in fresh leaves was 18), indicated a stronger limitation by P than by N.

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Nitrogen and potassium nutrition affect yield, dry weight partitioning, and nutrient-use efficiency of sweet potato

Communications in Soil Science and Plant Analysis ◽

10.1081/css-120002394 ◽

2002 ◽

Vol 33 (1-2) ◽

pp. 287-301 ◽

Cited By ~ 10

Author(s):

H. R. Martí ◽

H. A. Mills

Keyword(s):

Sweet Potato ◽

Nutrient Use Efficiency ◽

Dry Weight ◽

Potassium Nutrition ◽

Nutrient Use ◽

Use Efficiency ◽

Dry Weight Partitioning

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Nutrient use efficiency and utilisation in east coast Australian Eucalyptus forests

Australian Journal of Botany ◽

10.1071/bt18178 ◽

2019 ◽

Vol 67 (8) ◽

pp. 585

Author(s):

John Turner

Keyword(s):

Nutrient Availability ◽

High Efficiency ◽

Nutrient Use Efficiency ◽

Nutrient Concentrations ◽

P Availability ◽

Mixed Stands ◽

Available N ◽

Nutrient Use ◽

Use Efficiency ◽

The Difference

Nutrient use efficiency (NUE) has been used as a method to evaluate the utilisation and processes of cycling of nutrient in forests. In publications, different methods have been used to calculate NUE, but as efficiency they are all expressed as ratios and these cover the basic areas of: (1) absorption from the soil and uptake, (2) efficiency in their requirement or utilisation of nutrients including physiological efficiency and (3) efficiency in the retention and internal re-utilisation of nutrients. Few studies address NUE based on complete nutrient cycling information but use indices based on litterfall or foliage nutrient concentrations. In this study different expressions of NUE were defined and evaluated for N and P using data on nutrient cycles on species in the genus Eucalyptus in regrowth and mature native eastern Australian forests. It has been hypothesised that NUE increases with decreasing nutrient availability however increasing such efficiency has a cost reflected in reduced productivity. The hypothesis was proven for all expressions of NUE correlating NUE against estimates of soil N or P availability but there were differences between coastal and tableland Eucalyptus forests. The level of significance varied for different types of NUE and in these ecosystems P was of greater significance than N. This reflected the importance of P in relation to productivity on many of the weathered soils or the limited value of the soil available N indices. It is suggested that the difference expressions of NUE differ in their significance with species so some will be relatively more efficient in terms of uptake, others in utilisation and others in redistribution. Only in extreme situations of nutrient availability do species have relatively high efficiency for all methods NUE calculation. It is proposed that these differences are of importance in site/species distribution and more importantly in mixed stands where they provide advantages either at different stages of stand development or after significant disturbances such as fire.

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Clonal Variation in Photosynthesis, Foliar Nutrient Concentrations, and Photosynthetic Nutrient Use Efficiency in a Brazil Nut (Bertholletia excelsa) Plantation

Forest Science ◽

10.5849/forsci.15-068 ◽

2016 ◽

Vol 62 (3) ◽

pp. 323-332 ◽

Cited By ~ 3

Author(s):

Marciel J. Ferreira ◽

José Francisco de Carvalho Gonçalves ◽

João Baptista Silva Ferraz ◽

Ulysses Moreira dos Santos Junior ◽

Heinz Rennenberg

Keyword(s):

Nutrient Use Efficiency ◽

Clonal Variation ◽

Nutrient Concentrations ◽

Brazil Nut ◽

Bertholletia Excelsa ◽

Nutrient Use ◽

Foliar Nutrient ◽

Foliar Nutrient Concentrations ◽

Use Efficiency

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EFFECT OF TOXIC METAL ON THE STRUCTURAL DRY WEIGHT OF A PLANT: A MODEL

International Journal of Biomathematics ◽

10.1142/s1793524513500289 ◽

2013 ◽

Vol 06 (05) ◽

pp. 1350028 ◽

Cited By ~ 2

Author(s):

O. P. MISRA ◽

PREETY KALRA

Keyword(s):

Plant Growth ◽

Toxic Effect ◽

Nutrient Use Efficiency ◽

Toxic Metal ◽

Dry Weight ◽

Individual Plant ◽

Root Structure ◽

Nutrient Use ◽

Use Efficiency ◽

The Individual

A two compartment mathematical model for the individual plant growth under the stress of toxic metal is studied. In the model it is assumed that the uptake of toxic metal by the plant is through root compartment. The toxic metal present in the soil interfere with the uptake and distribution of essential nutrients in plant causing decrease in the nutrient uptake eventually damaging the root structure. In the model it is further assumed that the resistance to nutrient transport from root to shoot compartment increases and nutrient use efficiency decreases due to the presence of toxic metal. In order to visualize the effect of toxic metal on plant growth, we have studied two models, that is, model for plant growth with no toxic effect and model for plant growth with toxic effect. From the analysis of the models the criteria for plant growth with and without toxic effects are derived. The numerical simulation is done using Matlab to support the analytical results.

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Tomato Production in Florida Using Fertigation Technology

EDIS ◽

10.32473/edis-hs1392-2020 ◽

2020 ◽

Vol 2020 (5) ◽

Author(s):

Mary Dixon ◽

Guodong Liu

Keyword(s):

Nutrient Use Efficiency ◽

Health Benefits ◽

Vegetable Crop ◽

High Demand ◽

Tomato Production ◽

Nutrient Use ◽

Use Efficiency

Tomato is in high demand because of its taste and health benefits. In Florida, tomato is the number one vegetable crop in terms of both acreage and value. Because of its high value and wide acreage, it is important for tomato production to be efficient in its water and nutrient use, which may be improved through fertigation practices. Therefore, the objective of this new 7-page article is to disseminate research-based methods of tomato production utilizing fertigation to enhance yield and nutrient use efficiency. Written by Mary Dixon and Guodong Liu, and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1392

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Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

10.24047/bc10248 ◽

2018 ◽

Vol 102 (4) ◽

pp. 8-10

Author(s):

Fernando García ◽

Andrés Grasso ◽

María González Sanjuan ◽

Adrián Correndo ◽

Fernando Salvagiotti

Keyword(s):

Nutrient Management ◽

Nutrient Use Efficiency ◽

Management Strategies ◽

Crop Productivity ◽

Soil Productivity ◽

Nutrient Use ◽

Grain Crop ◽

Wide Scale ◽

Use Efficiency

Trends over the past 25 years indicate that Argentina’s growth in its grain crop productivity has largely been supported by the depletion of the extensive fertility of its Pampean soils. Long-term research provides insight into sustainable nutrient management strategies ready for wide-scale adoption.

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