Cover Crops and Soil Nitrogen Cycling

Nitu, Tazbeen Tabara; Milu, U.M.; Jahangir, M. M. R.

doi:10.1201/9781003187301-12

Cited by 2 publications

(5 citation statements)

References 1 publication

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“…The organic content, NOx concentration, environmental stability, salinity, and temperature have all been identified as key influencing elements in the ecological dispersion of anammox bacteria and their contribution to N loss in natural environments [32]. The significant loss of N due to anammox occurring in paddy fields is similar to that for NH 3 volatilization (up to 40%), leaching (9-15%), runoff (5-7%), and denitrification (up to 40%) (Table 1) [8,33,34].…”

Section: Anammoxmentioning

confidence: 93%

“…Anammox stands for anaerobic ammonium oxidation, a recent discovery in N-cycle. In the anammox, NH 4 + is oxidized to nitrite as an electron acceptor and then elemental N 2 by a series of metabolic processes under anaerobic circumstances [8]. This process is carried out by a group of bacteria, that is, annamox, and they are abundant in marine ecosystem so the anammox is a critical issue in the marine ecosystem to understand N-cycle.…”

Section: Anammoxmentioning

confidence: 99%

“…The anammox bacteria are also found in terrestrial ecosystem. The idea of the N cycle in paddy fields has changed because the paddy field acts as a niche of anammox bacteria by providing favorable conditions (water logging (anaerobic condition) and high NH 4 + and NO 3 À content) for their living and activity [8]. According to reports, the anammox mechanism is responsible for 4-37% of the nitrogen loss in agricultural soils [31].…”

Section: Anammoxmentioning

confidence: 99%

“…Carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O) are listed as greenhouse gases, but NH 3 is another common gas derived from rice fields and this contributes indirectly to global warming. About 10-60% of the applied nitrogen in rice fields could be lost by NH 3 volatilization, which is the major pathway of nitrogen (N) loss, while 5-10% of the applied nitrogen could be lost through denitrification [8,9]. The amount of N loss as NH 3 in Asia's agriculture is expected to rise from 4.6 Tg N year À1 in 1961 to 13.8 Tg N year À1 in 2000 [10,11], and in the next three decades, it will be 18.9 Globally used different N-fertilizer [4].…”

Section: Introductionmentioning

confidence: 99%

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Gaseous Losses of Nitrogen from Rice Field: Insights into Balancing Climate Change and Sustainable Rice Production

Ferdous¹,

Mahjabin²,

Asif³

et al. 2023

Sustainable Rice Production - Challenges, Strategies and Opportunities

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The world is confronted with one of the most difficult tasks of the twenty-first century, satisfying society’s expanding food demands while causing agriculture’s environmental impacts. Rice security is the food security for South Asian countries. Rice production requires a large amount of water and fertilizer, especially nitrogenous fertilizer, where urea works as the primary source of nitrogen (N). Different biogeochemical conditions, such as alternate wetting and drying (AWD), intermittent drainage, agroclimatic condition, oxic-anoxic condition, complete flooded irrigation,. have severe impacts on GHGs emission and nitrogen use efficiency (NUE) from rice fields. For sustainable production, it is a must to mitigate the emission of GHGs and increase NUE along with cost minimization. But analytically accurate data about these losses are still not quantifiably justified. In this chapter, we will show the proper use of the measured data with suitable results and discussions to recommend the future cultivation system of rice for sustainable production.

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Section: Anammoxmentioning

confidence: 93%

Section: Anammoxmentioning

confidence: 99%

Section: Anammoxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gaseous Losses of Nitrogen from Rice Field: Insights into Balancing Climate Change and Sustainable Rice Production

Ferdous¹,

Mahjabin²,

Asif³

et al. 2023

Sustainable Rice Production - Challenges, Strategies and Opportunities

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“…Leaching contributes to approximately 30-50% of total N losses (Gosh and Bhat 1998). Additionally, approximately 5-10% of the applied nitrogen may be lost through the process of denitrification (Nitu et al 2021). Therefore, it is crucial to adopt an appropriate nutrient management approach that takes into account the specific requirements of the crop, particularly regarding the application of N, P, and K.…”

Section: Introductionmentioning

confidence: 99%

Leaf Color Chart Can Increase Productivity and Foster Climate Smart Agriculture in Rice: A Case Study

Lamsal,

Poudel,

Dhital

et al. 2023

Agron J Nepal

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Optimum nitrogen application has been a major challenge to enhance agricultural productivity and sustainability in rice cultivation of Nepal. Nitrogen fertilizer must be applied only when necessary and must be based on the crop’s nitrogen requirement. Losses of nitrogen from rice field can cause air pollutant production, global warming and climate change. Leaf Color Chart (LCC) poses potential climate smart practice in rice field. The use of LCC is a low cost and viable method for managing nitrogen in real time, enhancing the nitrogen use efficiency. To demonstrate the effectiveness of LCC based urea application for nitrogen management in rice, a field experiment was conducted at Masala Bali Bikash Kendra, Panchkhal from June to November, 2022. Variety selected for field experimentation was Makawanpur-1. The experiment compared government-recommended urea application with LCC-based application for which field was divided into two equal plots (300 sq m). Morphological growth was measured at different stages of rice and yield was taken at maturity. In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest. LCC-based urea application also had 34% more leaves (126) and 54.5% higher effective tiller count (17). Despite the same rate of nitrogen application, yield was 35% higher in LCC based practice (4694.73 kg ha-1) than government recommended practice. Real time nitrogen application in splits based on LCC management led to better plant growth and yield, while fixed-time nitrogen application regardless of crop need in conventional blanket application resulted in nitrogen loss and lower yield. Considering the effect of nitrogen application through LCC management on rice productivity, it's clear that LCC offers valuable chances to enhance nitrogen use efficiency, rice yield, and farmers' profits.

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Cover Crops and Soil Nitrogen Cycling

Cited by 2 publications

References 1 publication

Gaseous Losses of Nitrogen from Rice Field: Insights into Balancing Climate Change and Sustainable Rice Production

Gaseous Losses of Nitrogen from Rice Field: Insights into Balancing Climate Change and Sustainable Rice Production

Leaf Color Chart Can Increase Productivity and Foster Climate Smart Agriculture in Rice: A Case Study

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