Critical aspects of organic matter management in the Tropics: the example of India

Katyal, J. C.; Rao, N. H.; Reddy, M. N.

doi:10.1007/978-94-017-2172-1_8

Cited by 30 publications

(34 citation statements)

References 10 publications

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“…Maintaining and improving the level of soil organic matter (SOM) is pre-requisite to ensuring soil quality, future productivity, and sustainability (Katyal et al 2001) as it influences soil physical, chemical, and biological properties and processes. In addition to being a direct source of plant nutrients, SOM also indirectly influences the availability of plant nutrients in soil from native pools.…”

Section: Introductionmentioning

confidence: 99%

Monitoring changes in soil organic carbon pools, nitrogen, phosphorus, and sulfur under different agricultural management practices in the tropics

Verma

Datta

Rattan

et al. 2010

Environ Monit Assess

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Soil organic matter not only affects sustainability of agricultural ecosystems, but also extremely important in maintaining overall quality of environment as soil contains a significant part of global carbon stock. Hence, we attempted to assess the influence of different tillage and nutrient management practices on various stabilized and active soil organic carbon pools, and their contribution to the extractable nitrogen phosphorus and sulfur. Our study confined to the assessment of impact of agricultural management practices on the soil organic carbon pools and extractable nutrients under three important cropping systems, viz. soybean-wheat, maize-wheat, and rice-wheat. Results indicated that there was marginal improvement in Walkley and Black content in soil under integrated and organic nutrient management treatments in soybean-wheat, maize-wheat, and rice-wheat after completion of four cropping cycles. Improvement in stabilized pools of soil organic carbon (SOC) was not proportional to the applied amount of organic manures. While, labile pools of SOC were increased with the increase in amount of added manures. Apparently, green manure (Sesbania) was more effective in enhancing the lability of SOC as compared to farmyard manure and crop residues. The KMnO(4)-oxidizable SOC proved to be more sensitive and consistent as an index of labile pool of SOC compared to microbial biomass carbon. Under different cropping sequences, labile fractions of soil organic carbon exerted consistent positive effect on the extractable nitrogen, phosphorus, and sulfur in soil.

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Section: Introductionmentioning

confidence: 99%

Monitoring changes in soil organic carbon pools, nitrogen, phosphorus, and sulfur under different agricultural management practices in the tropics

Verma

Datta

Rattan

et al. 2010

Environ Monit Assess

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show abstract

“…The importance of integrated nutrient management has been well-documented by Katyal et al 23 , with continuous application of chemical fertlizers to virgin soil, SOC remained stable for 10 years, while in manure and fertilizer (integrated nutrient management) practices, it was stable for 25 years. This indicated that combined use of organic and inorganic fertilizers played an important role in stabilizing and maintaining SOC in cropping systems and ensuring sustainability.…”

Section: Integrated Nutrient Managementmentioning

confidence: 99%

“…The quantitative analysis of different tank silt samples from Warangal districts, Telangana revealed that the content of organic carbon in these samples ranged from 0.3% to 1.5%. Besides organic C, these samples also contained the other plant nutrients such as N (328-748), P (5-35), K (271-522), sulphur (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30), zinc (1.2-5.6) and boron content (0.4-0.8) mg kg -1 silt 63 . These authors reported that tank silt application also improved other physical and biological parametres of the soil.…”

Section: Tank Silt Applicationmentioning

confidence: 99%

Effective Management Practices for Improving Soil Organic Matter for Increasing Crop Productivity in Rainfed Agroecology of India

Rao¹,

Indoria²,

Sharma³

2017

Current Science

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To meet the requirement of increasing demand for food and fodder and to ensure food security, it is important to increase the production potential through soil health improvement in rainfed agroecological regions besides the irrigated regions. Degrading soil health because of decrease in soil organic carbon (SOC) and resultant decline in overall soil fertility in rainfed areas is a major threat to sustenance of crop and fodder productivity. In view of the importance of soil organic matter (SOM), and its close relationship with soil health and crop production, its role in carbon sequestration and nutrient cycling has gained much attention in the last few years. Restoration of SOM contents in the soil to optimal levels will not only improve the soil health of rainfed agroecosystem, but will also significantly contribute towards boosting crop production. In this article, we have critically reviewed the impacts of different crop management practices on SOC content and its impact on soil health and crop productivity in rainfed agroecological regions of the country.

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“…Because of low C in the dryland soils, there is good potential for C sequestration (Wani et al 2003). Low soil organic matter (SOM) in tropical soils, particularly those under the influence of arid, semi-arid, and subhumid climates, is a major factor contributing to their poor productivity (Syers et al 1996;Katyal, Rao, and Reddy 2001). Therefore, proper management of SOM is important for sustaining soil productivity and ensuring food security and protection of marginal lands (Scherr 1999).…”

Section: Introductionmentioning

confidence: 98%

Carbon Stocks in Different Soil Types under Diverse Rainfed Production Systems in Tropical India

Srinivasarao

Vittal

Venkateswarlu

et al. 2009

Communications in Soil Science and Plant Analysis

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Soil carbon (C) pool plays a crucial role in the soil's quality, availability of plant nutrients, environmental functions, and global C cycle. Drylands generally have poor fertility and little organic matter and hence are candidates for C sequestration. Carbon storage in the soil profile not only improves fertility but also abates global warming. Several soils, production, and management factors influence C sequestration, and it is important to identify production and management factors that enhance C sequestrations in dryland soils. The objective of the present study was to examine C stocks at 21 sites under ongoing rainfed production systems and management regimes over the last 25 years on dominant soil types, covering a range of climatic conditions in India. Organic C stocks in the soil profiles across the country showed wide variations and followed the order Vertisols . Inceptisols . Alfisols . Aridisols. Inorganic C and total C stocks were larger in Vertisols than in other soil types. Soil organic C stocks decreased with depth in the profile, whereas inorganic C stocks increased with depth. Among the production systems, soybean-, maize-, and groundnut-based systems showed greater organic C stocks than other production systems. However, the greatest contribution of organic C to total C stock was under upland rice system. Organic C stocks in the surface layer of the soils increased with rainfall (r 5 0.59*), whereas inorganic C stocks in soils were found in the regions with less than 550 mm annual rainfall. Cation exchange capacity had better correlation with organic C stocks than clay content in soils. Results suggest that Indian dryland soils are low in organic C but have potential to sequester. Further potential of tropical soils to sequester more C in soil could be harnessed by 2338 identifying appropriate production systems and management practices for sustainable development and improved livelihoods in the tropics.

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Critical aspects of organic matter management in the Tropics: the example of India

Cited by 30 publications

References 10 publications

Monitoring changes in soil organic carbon pools, nitrogen, phosphorus, and sulfur under different agricultural management practices in the tropics

Monitoring changes in soil organic carbon pools, nitrogen, phosphorus, and sulfur under different agricultural management practices in the tropics

Effective Management Practices for Improving Soil Organic Matter for Increasing Crop Productivity in Rainfed Agroecology of India

Carbon Stocks in Different Soil Types under Diverse Rainfed Production Systems in Tropical India

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