Changes in chemical properties of organic matter with intensified rice cropping in tropical lowland soil

Olk, Daniel C.; Cassman, Kenneth G.; Randall, E. W.; Kinchesh, Paul; Sanger, L.J.; Anderson, J. M.

doi:10.1111/j.1365-2389.1996.tb01403.x

Cited by 173 publications

(135 citation statements)

References 26 publications

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“…A clear change in the chemical nature of SOM that occurs under intensive rice cropping is the accumulation of phenolic compounds (Olk et al, 1996(Olk et al, , 1998(Olk et al, , 1999. The dominant types of phenols detected in rice soils (cinnamyl, syringyl and vanillyl) are derived from plant lignin, which comprises the woody tissues of crop roots and straw.…”

Section: Yield Trends and Som Quality Under Intensive Rice Croppingmentioning

confidence: 99%

“…Yet evidence for such an influence is sparse, largely due to the inability to determine the exact chemical nature of SOM (MacCarthy, 2001) or even the bonding environments of SOM-bound nutrients. Recent studies have identified the accumulation of phenolic compounds in the SOM of submerged soils that were intensively cropped to irrigated lowland rice (Oryza sativa L.) in the Philippines (Olk et al, 1996(Olk et al, , 1998. Using newly developed analytical techniques to identify the bonding environments of C with N, phenolic lignin residues were shown to have bound covalently with N in a humic acid fraction (Schmidt-Rohr et al, 2004 resulting chemical stabilization was hypothesized to have contributed to an observed long-term decrease in availability of soil N and an associated decline in rice grain yield.…”

Section: Introductionmentioning

confidence: 99%

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Chemical stabilization of soil organic nitrogen by phenolic lignin residues in anaerobic agroecosystems

Olk¹,

Cassman

Schmidt‐Rohr

et al. 2006

Soil Biology and Biochemistry

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110

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This review summarizes independent reports of yield decreases in several agricultural systems that are associated with repeated cropping under wet or submerged soil conditions. Crop and soil data from most of these agroecosystems have led researchers to attribute yield decreases to a reduction in crop uptake of N mineralized from soil organic matter (SOM). These trends are most evident in several long-term field experiments on continuous lowland rice systems in the Philippines, but similar trends are evident in a continuous rice rotation in Arkansas, USA and with no-till cropping systems in North American regions with cool, wet climatic conditions in Spring. Soil analyses from some of these systems have found an accumulation of phenolic lignin compounds in SOM. Phenolic compounds covalently bind nitrogenous compounds into recalcitrant forms in laboratory conditions and occurrence of this chemical immobilization under field conditions would be consistent with field observations of reduced soil N supply. However, technological shortcomings have precluded its demonstration for naturally formed SOM. Through recent advances in nuclear magnetic resonance spectroscopy, agronomically significant quantities of lignin-bound N were found in a triple-cropped rice soil in the Philippines. A major research challenge is to demonstrate in the anaerobic agroecosystems that these lignin residues bind sufficient quantities of soil N to cause the observed yield decreases. A key objective will be to elucidate the cycling dynamics of lignin-bound N relative to the seasonal pattern of crop N demand. Anaerobic decomposition of crop residues may be the key feature of anaerobic cropping systems that promotes the accumulation of phenolic lignin residues and hence the covalent binding of soil N. Potential mitigation options include improved timing of applied N fertilizer, which has already been shown to reverse yield decreases in tropical rice, and aerobic decomposition of crop residues, which can be accomplished through field drainage or timing of tillage operations. Future research will evaluate whether aerobic decomposition promotes the formation of phenol-depleted SOM and greater in-season N mineralization, even when the soil is otherwise maintained under flooded conditions during the growing season. r

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Section: Yield Trends and Som Quality Under Intensive Rice Croppingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemical stabilization of soil organic nitrogen by phenolic lignin residues in anaerobic agroecosystems

Olk¹,

Cassman

Schmidt‐Rohr

et al. 2006

Soil Biology and Biochemistry

Self Cite

110

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“…In rice-wheat experiments, the SOM is reported to declines over time when conservation practices are not adopted (Regmi et al, 2002;Majumder et al, 2008). Studies also suggest changes in the chemical composition of SOM that influences N supply to the plants (Olk et al, 1996;Bronson and Hobbs, 1998).…”

Section: Soil Fertility Statusmentioning

confidence: 99%

Crop Yield and Soil Fertility Status of Long-Term Rice-Rice-Wheat Cropping Systems

Rawal

Ghimire

Chalise

2017

Int J Appl Sci Biotechnol

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Balanced nutrient supply is important for the sustainable crop production. We evaluated the effects of nutrient management practices on soil properties and crop yields in rice (Oryza sativa L.) -rice -wheat (Triticum aestivum L.) system in a long-term experiment established at National Wheat Research Program (NWRP), Bhairahawa, Nepal. The experiment was designed as a randomized complete block experiment with nine treatments and three replications. Treatments were applied as: T1-no nutrients added, T2-N added; T3-N and P added; T4-N and K added; T5-NPK added at recommended rate for all crops. Similarly, T6-only N added in rice and NPK in wheat at recommended rate; T7-half N; T8-half NP of recommended rate for both crops; and T9-farmyard manure (FYM) @10 Mg ha -1 for all crops in rotation. Results of the study revealed that rice and wheat yields were significantly greater under FYM than all other treatments. Treatments that did not receive P (T2, T3, T7, T8) and K (T2, T4) had considerably low wheat yield than treatments that received NPK (T5) and FYM (T9). The FYM lowered soil pH and improved soil organic matter (SOM), total nitrogen (TN), available phosphorus (P), and exchangeable potassium (K) contents than other treatments. Management practices that ensure nutrient supply can increase crop yield and improve soil fertility status.

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“…This yield decline was associated with the decrease in N-supplying capacity of soil 13 . The values of soil pH of double-and triple-crop rice were 6.5 and 6.2, respectively.…”

Section: The Relationship Between Soil Ph and Growth Inhibitionmentioning

confidence: 99%

Growth Inhibition of Rice by Water Drainage during Fallow at IRRI

Nozoe

Rodriguez

Agbisit

2006

JARQ

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In a rice cultivation experiment at the International Rice Research Institute (IRRI), water drainage during the fallow period inhibited the growth of paddy rice, especially during the early stage of subsequent cultivation. This symptom became more prominent when rice straw was not applied, and when the amount of fertilizer applied was small. The application of a mixture of nitrogen, phosphorus, and potassium fertilizers reduced this inhibition. The amounts of phosphorus in the growth-inhibited rice and soil were smaller than those without growth inhibition. The findings suggest that one of the factors that inhibited rice growth was phosphorus deficiency. The inhibition was associated with high soil pH and low Fe(II) content in the problem soil. There was a negative correlation between soil pH and Fe(II) content. Water drainage during fallow decreased the amount of Fe(II) in the soil because Fe(II) was oxidized to Fe(III) under oxidative conditions. During the subsequent cultivation season, the amount of Fe(II) in the soil was low and the soil pH was high. The application of rice straw improved rice growth. The phosphorus deficiency of growth-inhibited rice was associated with a small amount of available phosphorus in soil presumably because of the high soil pH and the adsorptopn of phosphorus to Fe(III) oxides in the soil.

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Changes in chemical properties of organic matter with intensified rice cropping in tropical lowland soil

Cited by 173 publications

References 26 publications

Chemical stabilization of soil organic nitrogen by phenolic lignin residues in anaerobic agroecosystems

Chemical stabilization of soil organic nitrogen by phenolic lignin residues in anaerobic agroecosystems

Crop Yield and Soil Fertility Status of Long-Term Rice-Rice-Wheat Cropping Systems

Growth Inhibition of Rice by Water Drainage during Fallow at IRRI

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