scholarly journals Optimizing nutrient use efficiency, productivity, energetics, and economics of red cabbage following mineral fertilization and biopriming with compatible rhizosphere microbes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Deepranjan Sarkar ◽  
Ardith Sankar ◽  
O. Siva Devika ◽  
Sonam Singh ◽  
Shikha ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Synergistic Effects ◽  
Nutrient Use Efficiency ◽  
Economic Benefits ◽  
Energy Output ◽  
Annual Change ◽  
Available N ◽  
Red Cabbage ◽  
Nutrient Use ◽  
Use Efficiency

AbstractConventional agricultural practices and rising energy crisis create a question about the sustainability of the present-day food production system. Nutrient exhaustive crops can have a severe impact on native soil fertility by causing nutrient mining. In this backdrop, we conducted a comprehensive assessment of bio-priming intervention in red cabbage production considering nutrient uptake, the annual change in soil fertility, nutrient use efficiency, energy budgeting, and economic benefits for its sustainable intensification, among resource-poor farmers of Middle Gangetic Plains. The compatible microbial agents used in the study include Trichoderma harzianum, Pseudomonas fluorescens, and Bacillus subtilis. Field assays (2016–2017 and 2017–2018) of the present study revealed supplementing 75% of recommended NPK fertilizer with dual inoculation of T. harzianum and P. fluorescens increased macronutrient uptake (N, P, and K), root length, heading percentage, head diameter, head weight, and the total weight of red cabbage along with a positive annual change in soil organic carbon. Maximum positive annual change in available N and available P was recorded under 75% RDF + P. fluorescens + B. subtilis and 75% RDF + T. harzianum + B. subtilis, respectively. Bio-primed plants were also higher in terms of growth and nutrient use efficiency (agronomic efficiency, physiological efficiency, apparent recovery efficiency, partial factor productivity). Energy output (26,370 and 26,630 MJ ha−1), energy balance (13,643 and 13,903 MJ ha−1), maximum gross return (US $ 16,030 and 13,877 ha−1), and net return (US $ 15,966 and 13,813 ha−1) were considerably higher in T. harzianum, and P. fluorescens treated plants. The results suggest the significance of the bio-priming approach under existing integrated nutrient management strategies and the role of dual inoculations in producing synergistic effects on plant growth and maintaining the soil, food, and energy nexus.

scholarly journals Quantitative root ecology as element of soil fertility theory.

1986 ◽  
Vol 34 (3) ◽  
pp. 273-281 ◽  
Author(s):  
M. van Noordwijk ◽  
P. de Willigen
Keyword(s):  
Soil Fertility ◽  
Soil Properties ◽  
Special Reference ◽  
Plant Nutrition ◽  
Nutrient Use Efficiency ◽  
Plant System ◽  
Nutrient Use ◽  
Root Ecology ◽  
Use Efficiency

Nutrient use efficiency with special reference to the soil/plant system, soil fertility theory relating to fertilizers, plant nutrition, soil properties and root ecology and aspects of quantitative root ecology are considered and an approach to modelling the relation of root ecology to soil fertility theory is outlined. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Nutrient use efficiency and utilisation in east coast Australian Eucalyptus forests

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.

scholarly journals ​Potassic Fertilizer Management for Sustainable Groundnut Productivity in India: A Review

2021 ◽  
Author(s):  
Bornali Borah
Keyword(s):  
Developing Countries ◽  
Soil Fertility ◽  
Nutrient Use Efficiency ◽  
Climatic Conditions ◽  
World Population ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Multiple Challenges ◽  
Safe Food ◽  
Nutrient Mining

World population is exponentially rising day by day and is anticipated to reach 9.6 billion by 2050. Agriculture in the 21st century faces multiple challenges: it has to produce more food and fiber to feed ever growing population especially in developing countries which can be satisfied only by applying improved technologies, included rational use of fertilizers for different soil and climatic conditions. Continual nutrient mining by crop removal without adequate replenishment could result in loss of soil fertility in many developing countries. Again, human activities led to the degradation of nearly 2000 million hectares of land in the last 40 years. To meet the challenge of food security for present and future populations, to conserve natural resources and to protect the environment, it is imperative that agricultural production be conducted within an overall framework of sustainable development. Agricultural nutrients management to provide a safe food supply and secure the environment remains one of the immense challenges of the present situation. Therefore, it is very important to apply fertilizers in an efficient way to minimize loss and to improve the nutrient use efficiency for sustaining productivity as well as soil fertility.

Sign in / Sign up

Export Citation Format

Share Document