Nutrient Mining: Addressing the Challenges to Soil Resources and Food Security

Majumdar, Kaushik; Sanyal, Saroj Kumar; Dutta, Sudarshan; Satyanarayana, T.; Singh, Vinod Kumar

doi:10.1007/978-81-322-2716-8_14

Cited by 26 publications

(16 citation statements)

References 24 publications

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“…Biswas and Sharma (2008) showed that response to applied fertilizer (kg grain [kg of added NPK] -1 ) decreased from 13.4 to 3.7 between 1970 and 2005. Imbalanced fertilization, more specifically low use of K, has been identified as one of the major reasons for declining PFP in India. Several studies identified inequality between applied K and its removal in harvested crops, which impacts crop productivity, nutrient use efficiencies, and soil K mining (Naidu et al, 2011;Majumdar et al 2012Majumdar et al , 2016Singh et al 2014). Long-term cropping with negative PNBI K has been associated with yield declines in the rice-wheat system in South Asia (Regmi et al 2002).…”

Section: Crop Requirement and Potassium Usementioning

confidence: 99%

“…Careful nutrient and crop management planning is necessary for cropping systems to avoid nutrient imbalances in the soil. Long-term intensive cropping with inadequate application of K results in K mining leading to large negative balances and depletion of native K reserves (Gami et al 2001;Regmi et al 2002;Singh et al 2002;Yadvinder-Singh et al 2005;Majumdar et al 2016). Therefore, adequate input of K is essential to prevent further depletion of soil K. Fixation of applied K as non-exchangeable K is also not ruled out in K-depleted soils.…”

Section: Potassium Balance At the Cropping System Scalementioning

confidence: 99%

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Assessing Potassium Mass Balances in Different Countries and Scales

Majumdar

Norton

Murrell

et al. 2020

Improving Potassium Recommendations for Agricultural Crops

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Estimating nutrient mass balances using information on nutrient additions and removals generates useful, practical information on the nutrient status of a soil or area. A negative input–output balance of nutrients in the soil results when the crop nutrient removal and nutrient losses to other sinks become higher than the nutrient inputs into the system. Potassium (K) input–output balance varies among regions that have different climates, soil types, cropping systems, and cropping intensity. This chapter illustrates the farm-gate K balances in major production areas of the world and their impacts on native K fertility and crop yields. On-farm and on-station research examples show significant negative K balances in South Asia and Sub-Saharan Africa, while China, the USA, Brazil, and countries of the Latin America Southern Cone highlighted continued requirement of location-specific K application to maintain crop yields and soil K fertility status at optimum levels.

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Section: Crop Requirement and Potassium Usementioning

confidence: 99%

Section: Potassium Balance At the Cropping System Scalementioning

confidence: 99%

Assessing Potassium Mass Balances in Different Countries and Scales

Majumdar

Norton

Murrell

et al. 2020

Improving Potassium Recommendations for Agricultural Crops

Self Cite

View full text Add to dashboard Cite

show abstract

“…the incremental N uptake per unit of N applied and the physiological efficiency of applied N (PE N ); PE N being the ratio of yield gain to incremental N uptake per unit of applied N (Dobermann 2005;Ladha et al 2005;Fageria et al 2010). The AE N can be affected by N application methods underpinned by the 4R nutrient stewardship principles of (1) the right source of N fertiliser, (2) the right rate, (3) the right timing of application, and (4) following the right placement (Majumdar et al 2016), as well as other factors such as abiotic and biotic stresses, and crop management practices (Dobermann 2005).…”

Section: Nuementioning

confidence: 99%

“…Soil N mining could be overestimated if N inputs from irrigation water, rainfall, crop residue, biological N fixation, and atmospheric deposition are ignored, but could be underestimated if losses through leaching, erosion, runoff, volatilisation, and denitrification are ignored (Majumdar et al 2016). The N footprint tool is useful for identifying hotspots of N losses to the environment, simulating mitigation options, and informing policy decisions for good N management through raising awareness of social responsibilities Davidson et al 2016).…”

Section: Table 3 Effect Of Adding Phosphorus (P) and Potassium (K) Tmentioning

confidence: 99%

Dilemma of nitrogen management for future food security in sub-Saharan Africa – a review

et al. 2017

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Abstract. Food security entails having sufficient, safe, and nutritious food to meet dietary needs. The need to optimise nitrogen (N) use for nutrition security while minimising environmental risks in sub-Saharan Africa (SSA) is overdue. Challenges related to managing N use in SSA can be associated with both insufficient use and excessive loss, and thus the continent must address the 'too little' and 'too much' paradox. Too little N is used in food production (80% of countries have N deficiencies), which has led to chronic food insecurity and malnutrition. Conversely, too much N load in water bodies due mainly to soil erosion, leaching, limited N recovery from wastewater, and atmospheric deposition contributes to eutrophication (152 Gg N year -1 in Lake Victoria, East Africa). Limited research has been conducted to improve N use for food production and adoption remains low, mainly because farming is generally practiced by resource-poor smallholder farmers. In addition, little has been done to effectively address the 'too much' issues, as a consequence of limited research capacity. This research gap must be addressed, and supportive policies operationalised, to maximise N benefits, while also minimising pollution. Innovation platforms involving key stakeholders are required to address N use efficiency along the food supply chain in SSA, as well as other world regions with similar challenges.

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“…Due to ever-rising population, food security has become a key concern in Bangladesh. Consequently, maintenance of soil fertility is necessary for sustainable agriculture and future food security (Majumdar et al, 2016). Hence, to achieve improved and sustainable crop production, the strategy of organic matter and balanced fertilizer management is essential.…”

Section: Introductionmentioning

confidence: 99%

Performance of different organic fertilizers in improving growth and yield of boro rice

et al. 2019

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A field experiment was conducted at two locations i.e. at Soil Science Field of Bangladesh Agricultural University and at Farmer’s field of Fakirakanda village of Mymensingh Sadar to evaluate the effects of different organic fertilizers on the growth and yield of rice (BRRI dhan28). The experiments at each location containing seven treatments were laid out in a randomized complete block design with three replications. The treatments were T0: Control, T1: 75% RFD; T2: 100% RFD, T3: 75% RFD + Kazi Jaibo Shar (5 tha-1), T4: 75% RFD + Kazi Jaibo Shar (3 t ha-1), T5: 75% RFD + Poultry manure (3 t ha-1) and T6: 75% RFD + Cow dung (5 t ha-1). Application of poultry manure as well as Kazi Jaibo Shar showed positive effects on yield attributes, grain and straw yields of rice, nutrient (N, P, K and S) contents and uptake by grain, straw and in total. The performance of 75% RFD with poultry manure @ 3 t ha-1 was the best in producing yield components, grain and straw yields of rice. At both locations, the performance of same dose (3 t ha-1) of poultry manure and Kazi Jaibo Shar was almost similar in producing growth and yield contributing characters, grain and straw yields, - nutrient content and uptake by rice while each of these manures compensated up to 25% of recommended chemical fertilizers. Therefore, considering the soil health, poultry manure or Kazi Jaibo Shar @ 3 t ha-1 is recommended for growth and yield enhancement in rice. SAARC J. Agri., 16(2): 153-166 (2018)

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Nutrient Mining: Addressing the Challenges to Soil Resources and Food Security

Cited by 26 publications

References 24 publications

Assessing Potassium Mass Balances in Different Countries and Scales

Assessing Potassium Mass Balances in Different Countries and Scales

Dilemma of nitrogen management for future food security in sub-Saharan Africa – a review

Performance of different organic fertilizers in improving growth and yield of boro rice

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