Comparing natural and planted black spruce seedlings. II. Nutrient uptake and efficiency of use

1993 ◽  
Vol 23 (11) ◽  
pp. 2435-2442 ◽  
Author(s):  
Alison D. Munson ◽  
Pierre Y. Bernier
Keyword(s):  
Black Spruce ◽  
Nutrient Use Efficiency ◽  
Biomass Accumulation ◽  
Nutrient Status ◽  
Growing Season ◽  
Nutrient Ratios ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Net Export ◽  
Strong Culture

The acclimation of planted black spruce (Piceamariana (Mill.) B.S.P.) seedlings to site nutrient condition was assessed by comparing their nutrient status with that of naturally regenerated seedlings on the same site during a 2-year period. The seasonal patterns for N, P, and K status (nutrient concentration and content) were markedly different for planted and natural seedlings. The former showed an early season decline in concentration that was less evident or absent in natural seedlings. This pattern persisted 1 year after planting, although biomass accumulation increased. Nutrient ratios indicated a strong culture regime effect on the balance of nutrients. This effect was considerably diluted 1 year after transplantation. Phosphorus and K levels in 1-year transplants and natural seedlings were close to the defined optimums for black spruce. Nutrient use efficiency of planted seedlings tended to increase with acclimation to site. Retranslocation from older needles of planted seedlings indicated net export of nutrients, while natural seedlings had a storage capacity in older foliage, indicated by net nutrient accumulation at the end of the growing season. Planting significantly reduced biomass allocation to current foliage, and naturally regenerated seedlings produced current foliage earlier in the growing season compared to planted seedlings.

scholarly journals Distribution of macronutrients (N, P, K, Mg) from single-nutrient and compound fertilizers application in oil palm seedlings (Elaeis guineensis Jacq.)

2021 ◽  
Vol 6 (1) ◽  
pp. 10
Author(s):  
Eko Noviandi Ginting ◽  
Suroso Rahutomo ◽  
Rana Farrasati ◽  
Iput Pradiko
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Nutrient Use Efficiency ◽  
Biomass Accumulation ◽  
Plant Performance ◽  
Randomized Design ◽  
Nutrient Use ◽  
Nutrients Availability ◽  
Use Efficiency ◽  
And Control

Nutrients availability and plant's ability to absorb nutrients are essential factors in supporting plant performance. There are two forms of fertilizer as a source of nutrients for oil palm, which are single-nutrient fertilizer (SNF) and briquette compound-nutrient fertilizer (BCNF). This study observed the concentration, uptake, distribution, and efficiency of macronutrients in plant organs of oil palm seedlings with two different fertilizer types. An experiment using oil palm seedlings was arranged in non-factorial complete randomized design (CRD) with three treatments, namely control, NPK in the form of briquettes, and single nutrient fertilizer consisting of urea, TSP, MOP, and kieserite with doses adjusting the composition of the slow-release BCNF (16-10-24-0.75) in three replications with a total of 27 seedlings. The results showed that the concentration, uptake, and distribution of nutrients between treatments and control were not significantly different. The order of nutrient uptake in leaves and stems of plants was N > K > Mg and P, while in roots was K > N > Mg > P. In BCNF and SNF treatments, the biomass accumulation in the stems, roots, and leaves were at percentage of 41 %, 30 %, and 29 %, while in the control, the biomass accumulation in the roots, stems, and leaves were at percentage of 39 %, 33 %, and 28 %, respectively. BCNF treatment had a greater efficiency indicated by a higher nutrient use efficiency (NUE) value compared to SNF or control. 

scholarly journals Nutrient Use Efficiency as a Strong Indicator of Nutritional Security and Builders of Soil Nutrient Status through Integrated Nutrient Management Technology in a Rice-Wheat System in Northwestern India

2021 ◽  
Vol 13 (8) ◽  
pp. 4551
Author(s):  
Mehakpreet Kaur Randhawa ◽  
Salwinder Singh Dhaliwal ◽  
Vivek Sharma ◽  
Amardeep Singh Toor ◽  
Sandeep Sharma ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Farmyard Manure ◽  
Poultry Manure ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Soil Nutrient Status ◽  
Nutritional Security ◽  
Nutrient Use ◽  
Use Efficiency

Nutrient use efficiency is reported as a strong indicator of the buildup soil nutrient status for nutritional security of crops through an integrated nutrient management approach under a rice-wheat system. The data revealed that integrated application of manures and fertilizers reported maximum organic carbon (0.39%) in the treatment receiving 100% of the recommended dose of fertilizers (RDF) + farmyard manure and lowering the pH to 6.39. The maximum available N (360.8 kg ha−1) was found in 100% RDF + press mud treatment; available P (66.30 kg ha−1) was found in 75% RDF + poultry manure; and available K, Zn, Cu, and Fe (226.3 kg ha−1 and 2.220, 0.732, and 36.87 mg kg−1, respectively) in 100% RDF + farmyard manure treatments. Similarly, total macro- and micronutrient content in soil increased with the addition of organic manures alone or in combination with chemical fertilizers. The highest agronomic efficiency and utilization efficiency of nitrogen (41.83 and 102.55 kg kg−1, respectively) and phosphorous (83.57 and 204.9 kg kg−1, respectively) were recorded in the treatment receiving 75% RDF + poultry manure. This study concluded that the integrated application of manures and chemical fertilizers is a must for improving soil nutrient status and nutrient use efficiency and ultimately enhances nutritional security under a rice-wheat system.

The photosynthetic capacity, nutrient content, and nutrient use efficiency of different needle age-classes of black spruce (Piceamariana) found in interior Alaska

1983 ◽  
Vol 13 (5) ◽  
pp. 834-839 ◽  
Author(s):  
J. L. Hom ◽  
W. C. Oechel
Keyword(s):  
Photosynthetic Capacity ◽  
Black Spruce ◽  
Nutrient Use Efficiency ◽  
Photosynthetic Apparatus ◽  
Specific Weight ◽  
Age Classes ◽  
Needle Age ◽  
Photosynthetic Rates ◽  
Nutrient Use ◽  
Use Efficiency

The photosynthetic capacity of different needle age-classes of black spruce (Piceamariana (Mill) B.S.P.) was studied using 14C labelling on whole branches at a site near Fairbanks, Alaska. Black spruce had highest photosynthetic rates in the 1-year-old tissue with the four most current age-classes showing similar high rates before declining with age. Older needles were found to maintain 40% of maximum photosynthetic rates after 13 seasons. Highest level of nitrogen was found in current needles with the first eight age-classes maintaining high levels before declining to 70% of maximum values in the oldest needles. Phosphorus levels were much higher in current tissue with a gradual decline after the 1-year-old tissue to a value of 55% of maximum values in the oldest tissue. Nutrient use efficiency was found to be highest in the 1-year-old tissue and declined with needle age. The loss of nutrient use efficiency may be due to the use of older tissue as aboveground nutrient stores, a decline in the efficiency of the photosynthetic apparatus of the needles, or an increase in the leaf specific weight. Black spruce has adapted to the low nutrient availability with low photosynthetic rates and low nutrient contents. Greater longevity of the needles would maximize the photosynthetic return per unit nitrogen invested in the needles.

scholarly journals Biomass accumulation, extraction and nutrient use efficiency by cover crops

2020 ◽  
Vol 9 (10) ◽  
pp. e9969109433
Author(s):  
Valdevan Rosendo dos Santos ◽  
Leonardo Correia Costa ◽  
Antonio Márcio Souza Rocha ◽  
Cícero Gomes dos Santos ◽  
Márcio Aurélio Lins dos Santos ◽  
...  
Keyword(s):  
Biomass Production ◽  
Cover Crops ◽  
Nutrient Use Efficiency ◽  
Biomass Accumulation ◽  
Pigeon Pea ◽  
Dry Mass ◽  
Area Index ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Mass Accumulation

The high biomass production of certain cover crops species is due to their high absorption capacity and nutrients use efficiency. Its potential for biomass production it is important to obtain productive plants using nutritional information especially in environments with low nutrient apport. The objective was to evaluate the biomass accumulation, extraction and nutrient use efficiency by cover crops growing in a soil of low fertility. The treatments were arranged in four randomized blocks, composed of seven cover crops: sunn hemp, spectabilis, pigeon pea forage, pigeon pea arbore, lab lab, jack bean and mucuna. To evaluate dry mass accumulation, crop growth rate and leaf area index, six plants were used in different times: 30, 45, 60, 75, 90 and 105 days after sowing. The cover crops differed in vegetative cycle, dry mass accumulation, yield, extraction and nutrient use efficiency, with better performance presented by pigeon pea arbore. The cover crops are good recyclers of nutrients, particularly nitrogen, potassium and calcium and have potential for use in the cultivation systems in the Northeast of Brazil.

Tomato Production in Florida Using Fertigation Technology

EDIS ◽  
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

Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

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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