Rational approaches to control of iron deficiency other than plant breeding and choice of resistant cultivars

Wallace, A.

doi:10.1007/bf00011884

Cited by 34 publications

(9 citation statements)

References 52 publications

(45 reference statements)

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“…Application of S-containing fertilizers to soil is the main remedy to alleviate these chlorosis symptoms (2,7,12,18,20,21,23). Although a number of inexpensive S materials are available (2,12,21,23,25,26,28,29), only gypsum and elemental S have been tested for the productivity of groundnut (2,18,20,23). Therefore, a field experiment was conducted to study the effectiveness of different sources of S and their method of application on groundnut productivity.…”

Section: Introductionmentioning

confidence: 99%

Source and mode of sulphur application on groundnut productivity

Singh

Chaudhari

1995

Journal of Plant Nutrition

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The effectiveness of 20 kg/ha sulphur (S) of the S-containing compounds iron sulphate (FeSO 4 ), gypsum, phosphogypsum, elemental S, and pyrite on groundnut (Arachis hypogaea L.) productivity was determined for plants grown on calcareous soil in the field. Plants grown with S compared to those without S had increased plant height, number of flowers, nodule numbers and weight, higher dry matter, seed, haulm (leaves and stems), and oil yields; higher tissue concentrations of nitrogen (N), phosphorus (P), S, iron (Fe), and zinc (Zn); and higher total uptake of mineral nutrients. Elemental S, pyrite, and FeSO 4 were more effective than gypsum and phosphogypsum, with FeSO 4 being the most effective source of S for improving plant growth traits, yield, and nutrient uptake. The most effective method of FeSO 4 application was half to the soil at planting time (basal) followed by the remainder in three equal foliar sprays at 30,50, and 70 days after plant emergence (DAE). Pyrite and elemental S were most effective when applied to the soil only, half as a basal soil dressing, and the remainder in two equal doses at 25 and 50 DAE. Plant concentrations of S, P, and potassium (K) were similar for each source of S, but elemental S, pyrite, and FeSO 4 enhanced N, Fe, manganese (Mn), and Zn uptake. Gypsum and phosphogypsum enhanced calcium (Ca) uptake. Elemental S and FeSCM provided similar results when half was applied to the soil followed by three equal foliar sprays. The best results from pyrite, gypsum, and phosphogypsum were obtained when soil applied.

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Section: Introductionmentioning

confidence: 99%

Source and mode of sulphur application on groundnut productivity

Singh

Chaudhari

1995

Journal of Plant Nutrition

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“…Addition of trace metals to soils may not become available to the plants, at least in a reasonable period of time. Spiking trees with Zn nails or injecting them with iron solutions or foliar applications of iron chelating agents or some other trace elements may be more effective, at least over the short term (see cited reviews, also Wallace, 1991;Raupach, 1975). Furthermore, atmospheric depositions of trace elements (along with toxic metals) are a major source of micro-(and even macro-) nutrient inputs into forests, but this is very site specific and can change with time.…”

Section: Trace Elements In Agriculturementioning

confidence: 96%

“…Sometimes one trace element can interfere with the utilization of another. Organic chelating agents in soils are also crvcial to the availability of trace metals in soils (Lineham, 1985;Chen and Stevenson, 1986) and the use of chelating agents in iron fertilization is well established (Wallace, 1991). As pointed out by Knezek and Ellis (1980), management of complex soil systems to produce the desired availability of each and every element, both macro and micro, "requires the ultimate in understanding of soil chemistry and processes", which we do not yet have.…”

Section: Trace Elements In Agriculturementioning

confidence: 97%

Plenary lecture: The use of iron and other trace element fertilizers in mitigating global warming

Benemann¹

1992

Journal of Plant Nutrition

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If current trends continue, before the end of the next century atmospheric CO 2 levels will be about double those of a century ago. Other greenhouse gases, including methane and chlorofluorocarbons, also are increasing at similar or even higher rates. The effects of such global atmospheric changes on climate, and, thus, on agriculture, forestry and natural ecosystems, are uncertain. Only the results of the planetary "experiment" itself will provide a definitive answer. Current projections range from catastrophic to favorable. Prudence suggests that steps be taken to slow down these rapid atmospheric changes, even in the absence of a definitive estimate of risks.Natural sinks for CO 2 already account for the disappearance of as much as 60% of anthropogenic CO 2 production due to fossil fuel combustion, deforestation, and soil organic carbon oxidation. Thus, current rates of increases in atmospheric CO 2 , about 0.4% per year, could be cut in half by reducing anthropogenic CO 2 outputs by 20%, or increasing sinks by a similar amount. Such a reduction would significantly reduce the risks of major climatic changes. Programs to reduce greenhouse gas emissions are being instituted in Japan and Europe, but not in the U.S. or most other countries.Reduction of CO 2 buildup must focus on the reduction of the major sourcesfossil fuel usage, deforestation, soil carbon oxidation -and on increasing sinks. The only practical methods for increasing CO 2 sinks are based on photosynthesis, primarily through increased C storage in standing tree biomass, the use biomass as 2277 2278 BENEMANN substitutes for fossil fuels, and, possibly, through the stimulation of ocean primary productivity by iron fertilization.Fertilizing forests and oceans with iron and other trace elements to increase primary productivity and CO 2 sequestration is an attractive concept Application of small quantities of trace elements, could, in principle, result in the sequestration of many tons of CO 2 . Iron limits primary productivity in some ocean areas. How to practically fertilize the oceans with iron, the environmental impacts of such additions, and their effectiveness in reducing atmospheric CO 2 concentrations are controversial issues. Long-term studies of ocean fertilization will be required, and such schemes can not be included in current global warming mitigation options.Iron and other trace elements are often limiting factors in agriculture, and many reports exist of such limitations in managed forestry. However, it is presently unclear how widespread such deficiencies are in managed forests, and global effects on CO 2 balances can not be projected. Fertilization with major nutrients -P, K, and N -is often effective in stimulating forest productivity and could be an economical approach to large-scale CO 2 sequestration. Increased forest fertilization with major nutrients will, in many cases, also require applications of some trace elements. In conclusion, forest fertilization with trace elements and even major nutrients could be an affordable and nea...

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“…In another study, FeEDTA, FeSO 4 and a combination of both were coated with a natural resin material and tested as slow release Fe fertilizers for susceptible grapevine rootstock (Natt 1992) with relatively low success. Wallace (1991) attempted to produce a slow release Fe fertilizer by preparing cross-linked swelling gel polymers saturated with Fe chelates, but these polymers released Fe rapidly upon irrigation.…”

Section: Introductionmentioning

confidence: 99%

FeDFOB and FeEDDHA immobilized on Sepharose gels as an Fe sources to plants

2011

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Background and Aims: The idea of immobilizing Fe and the formation of a slow-release fertilizer has been considered in several studies. However, none of the proposed materials were found efficient in correcting Fe deficiency. In the present study immobilization of Fe chelates on a solid matrix, as a first step in the production and supply process, is tested. Methods: The free forms of the siderophores desferrioxamine B (DFOB) and ethylendiaminebis (o-hydroxyphenyl-acetic acid) (EDDHA) were immobilized on p-nitrophenylchloroformate activated Sepharose and tested as Fe source for both strategy I (peanuts and cucumber, Arachis hypogeae L. and Cucumis sativus L., respectively) and strategy II (barley and wheat, Hordeum vulgare L. and Triticum aestivum L., respectively), plants. Plants grown in hydroponic cultures at pH 7.3 were supplied with the immobilized Fe-chelate either free in solution or confined in a dialysis tube with or without EDDHA in the outer solution as a carrier. Results: Cucumber and barley plants were found efficient in acquiring Fe from the immobilized chelates. Conclusions: The effectiveness in utilizing the immobilized Fe-chelate differed among cultivars and was related to the efficiency of the reductases activity or phytosiderophores secretion systems, in Strategy I and Strategy II plants, respectively.

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Rational approaches to control of iron deficiency other than plant breeding and choice of resistant cultivars

Cited by 34 publications

References 52 publications

Source and mode of sulphur application on groundnut productivity

Source and mode of sulphur application on groundnut productivity

Plenary lecture: The use of iron and other trace element fertilizers in mitigating global warming

FeDFOB and FeEDDHA immobilized on Sepharose gels as an Fe sources to plants

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