Conservation Agriculture - A Panacea to Improve Soil Physical Health

Indoria, A.K.; Rao, Srinivasa; Sharma, Kanika; Reddy, K. Sammi

doi:10.18520/cs/v112/i01/52-61

Cited by 65 publications

(50 citation statements)

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“…The MBC/TOC ratio showed a comparable value for both crops (alfalfa and wheat), in agreement with Benedetti et al (2013). This could be due to the short time in which alfalfa had acted (only 1 year), but we can not exclude the influence of residues of previous crops that may affect microbial processes (Indoria et al, 2017), masking the alfalfa effect.…”

Section: Effect Of Alfalfa On Aggregate Preservation Of Organic Carbosupporting

confidence: 60%

“…(). This could be due to the short time in which alfalfa had acted (only 1 year), but we can not exclude the influence of residues of previous crops that may affect microbial processes (Indoria et al ., ), masking the alfalfa effect.…”

Section: Discussionmentioning

confidence: 97%

“…Arihara & Karasawa (2000) reported that previous crops might affect the growth of succeeding cover crops by altering the soil physical properties. The crop residues can improve soil quality through their impact on reducing risks of soil erosion, stabilising soil structure and providing energy for microbial processes (Indoria et al, 2017). Jia et al (2006) suggested that the low C/N ratio in alfalfa residue might cause an acceleration of soil organic matter mineralisation leading to C depletion.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Alfalfa on Aggregate Stability, Aggregate Preserved‐C and Nutrients in Region Mountain Agricultural Soils 1 Year After its Planting

et al. 2017

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In mountain areas, water erosion plays an important role on soil structure and can strongly affect its functions. Suitable management practices, namely choice of crops, may be able to improve aggregate stability and reduce soil loss by surface runoff. To study the effects of cover crops on aggregation in mountain soils, we investigated a soil planted with wheat (site C) compared with two soils under alfalfa (sites A and B). All investigated soils were Typic Ustorthents. The soil aggregates were isolated by a physical‐functional procedure defined on the basis of aggregate resistance against specific breakdown mechanisms such as slaking and water abrasion. One year after alfalfa plantation, its effect on wet aggregate stability and the amount of organic carbon (OC) and nutrients retained by the isolated aggregates were measured. In the less degraded soils (site B), organic matter decomposition was stimulated, and after 1 year, the total OC (TOC) and TOC/N declined. Consequently, a reduction in aggregate stability and ability to preserve elements occurred, as shown by the decrease of wet aggregate stability indexes and total nutrients (e.g. N, P and K) retained by stable aggregates. In more degraded soil (site A), alfalfa generally positively affected the investigated properties. The effect of alfalfa in the studied crop rotation depends on the degree of land degradation due to water erosion. As regards the investigated breakdown mechanisms, our data showed that the aggregate resistance to water abrasion was related to TOC, while the resistance against fast wetting breakdown is correlated to the microbial biomass. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Effect Of Alfalfa On Aggregate Preservation Of Organic Carbosupporting

confidence: 60%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Effects of Alfalfa on Aggregate Stability, Aggregate Preserved‐C and Nutrients in Region Mountain Agricultural Soils 1 Year After its Planting

et al. 2017

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“…The most common way to provide soil with organics is to use manure [6][7][8][9]. However, in recent years there has been a shortage of cattle manure (CM).…”

Section: Introductionmentioning

confidence: 99%

Main elements of nutrition content in the soil for maize crops, depending on the predecessors and methods of soil treatment

2020

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The article presents data on the study of the main nutrition elements in the soil under maize crops, depending on the predecessors and methods of soil treatment in the conditions of ordinary Chernozem. The object of research is a Krasnodarsky 194MV hybrid of maize. Variants: 1. Fallow arable land (control); 2. Lupine as green manure; 3. Peas as green manure; 4. Binary sowing of lupine and peas as green manure; 5. Soy as green manure. The experiment was repeated three times, field placement was randomized, and area of each was 120 m². Agrotechnics of maize cultivation in the experiment corresponded to the recommendations for this zone. Green manure was plowed in during its reproduction phase. In the variants with green mass plowing to a depth of 23–25 cm, the largest amount of nitrate nitrogen was in the soil layer 0–20 cm. In the specified soil horizon, before sowing maize, the content of nitrate nitrogen ranged, depending on the variant, from 24.7 mg/kg to 42.8 mg/kg. In the soil layer 20–40 cm, the amount of nitrogen was lower, just 19.4–29.5 mg/kg. Similar dependence was observed for maize during its flowering phase. Tillage methods had almost no effect on the accumulation of nitrate nitrogen in the upper soil layer (0–20 cm). As in all the variants, the differences in this indicator were within the experimental error. However, the content of nitrate nitrogen during the growing season was different. The greatest amount of it was observed during the spring period, both in versions with plowing to a depth of 25–28 cm and in versions with blade loosening to a depth of 10–12 cm. The smallest amount of available phosphorus, regardless of the method of soil preparation, in the layer 0–20 cm was on fallow arable land – 122 mg/kg during the sowing period and 104 mg/kg during the flowering period. In variants with cultivation of legumes as green manure, the content of available phosphorus in the specified horizon was significantly chigher, being 147–171 mg/kg. The highest content of exchangeable potassium was provided by lupine – 209–213 mg/kg in the 0–20 cm soil layer, and lupine sown together with peas – 196–207 mg/kg. The minimum amount of exchangeable potassium was 143–146 mg/kg in fallow arable land, depending on the method of soil treatment.

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“…The soil tillage method and crop sowing system can alter the seed bank dynamics (Palm et al, 2014;Schutte et al, 2014;Indoria et al, 2017) and, consequently, weed emergence. Soil tillage increase the concentration of seed of small plants at greater depths in the soil profile and reduce their germination (Vidal et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Aries Guineagrass (Megathyrsus maximus Jacq cv. Aries) pasture establishment without chemical control in an environmentally protected area

Coimbra¹,

Lustosa²,

Deiss³

et al. 2019

Afr. J. Agric. Res.

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This study aimed to evaluate the Aries Guineagrass (Megathyrsus maximus sin. Panicum maximum Jacq. cv. Aries) and the weed community dynamics under different soil tillage and sowing methods in Southern Brazil, to create alternatives for sustainable farming in areas where weed chemical control is restricted. The experiment was carried out in split-plot design with randomized blocks and four replications; the main plots were three tillage methods: I) conventional, II) reduced tillage with moldboard plow, and III) reduced tillage with harrow plow; and the split-plots included two sowing methods: in line, (a) with seeds placed into the drill and (b) with seeds deposited on the soil surface. Aries Guineagrass and weeds were analyzed for phytosociological parameters during the pasture establishment. Lower weed densities and relative frequencies were found where the Aries Guineagrass was established under reduced tillage with moldboard plow and seeding on the soil surface. The Guineagrass establishment was effective as verified by the high plant survival rates (>75%) in the summer following the one that the pasture was sown. The results showed that, adequate soil tillage and sowing methods can further promote Aries Guineagrass development in areas where chemical control with herbicides is not allowed.

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Conservation Agriculture - A Panacea to Improve Soil Physical Health

Cited by 65 publications

References 0 publications

Effects of Alfalfa on Aggregate Stability, Aggregate Preserved‐C and Nutrients in Region Mountain Agricultural Soils 1 Year After its Planting

Effects of Alfalfa on Aggregate Stability, Aggregate Preserved‐C and Nutrients in Region Mountain Agricultural Soils 1 Year After its Planting

Main elements of nutrition content in the soil for maize crops, depending on the predecessors and methods of soil treatment

Aries Guineagrass (Megathyrsus maximus Jacq cv. Aries) pasture establishment without chemical control in an environmentally protected area

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