Parameters of Soybean Cultivated in Succession With Intercropping System of Out-of-Season Corn With Green Manure

Genovesi, Geovani; Rasera, Giuliano Patrick; Moreski, Humberto Misdei; Felipe, Daniele Fernanda; Costa, André Ribeiro da; Andreola, Ricardo; Gonçalves-Zuliani, Aline Maria Orbolato; Bido, Graciene de Souza; Mannigel, Anny Rosi

doi:10.5296/jas.v7i4.15404

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…All the treatments can significantly improve the plant height of corn (Figure 8). Application of green manure together with out-of-season corn crop promoted the highest plant height and soybean yield-related traits in succession (Genovesi et al, 2019). The fresh weight of corn could be increased by different milk vetch proportion treatments, and the change level reached a significant level at 1:100 ratio treatment.…”

Section: Different Ratios Of Milk Vetch Straw and Soil Treatments On ...mentioning

confidence: 94%

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Liu

Zhang

et al. 2022

Front. Plant Sci.

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Astragalus sinicus L. (milk vetch), one of the most widespread green manure species, is widely planted in the temperate zone. Eleusine indica L. (goosegrass), a serious annual weed in the world, has evolved resistance to some non-selective herbicides. The use of milk vetch as green manure for weed control in paddy fields was proposed. Aqueous extracts of milk vetch are known to exert a different level of phytotoxicity on weeds and crops. Phytotoxic substances contained in green manure were released into the soil by leaching at the initial stage and decomposition at the later stage after the return of green manure. Considering the need for searching new sustainable strategies for weed control, a question arises: “if milk vetch could be applied in goosegrass control, which stage is the most important to control goosegrass after milk vetch returned to the field, and at the same time, will the subsequent crop, corn (Zea mays L.), be affected by the side effects from milk vetch phytotoxicity?” In this study, the potential of milk vetch for goosegrass control was approached by repeated laboratory experiments, which include the aqueous extract experiment, decomposed experiment, and pot experiment. The effects of milk vetch returning to the field on maize were simulated by a pot experiment. The extract of milk vetch could significantly inhibit the germination of goosegrass at 2% concentration, and the inhibition enhanced with the increase of concentration. In the decomposed liquid experiment, decay time within 15 days, with the increase of decay days or concentration, goosegrass inhibition effect of decomposed liquid was enhanced. When decay time was more than 15 days, the inhibition ability of the decomposed liquid to goosegrass decreased. According to the RI accumulated value, aqueous extract and decomposed liquid have a “hormesis effect” on the germination and growth of goosegrass. Pot experiment proved that the addition of 1–10% (w/w) of milk vetch significantly reduced the germination and growth of goosegrass. On the contrary, the comprehensive analysis showed that the participation of milk vetch was conducive to the growth of corn. Our results constitute evidence that the incorporation of milk vetch into the soil could be a feasible practice to reduce weed infarctions in the corn-based cropping system.

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Section: Different Ratios Of Milk Vetch Straw and Soil Treatments On ...mentioning

confidence: 94%

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Liu

Zhang

et al. 2022

Front. Plant Sci.

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“…Green manure is a sustainable agronomic practice based on growing a crop, usually a legume, specifically to supply residual cover on the soil surface for subsequent crops (Diacono et al 2019). This management has been successfully used in tropical soils due to increased organic matter incorporated and allows higher yields for corn, sugarcane and soybean, for example (Genovesi et al 2019;Oliveira et al 2018). Moreover, the large-scale production of green manure triggers several advantages granted to small-scale farmers for the marketable products exported as grains or fodder, which varies according to different species of precultivated legume (Oliveira et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of different legume green manures on tropical soil microbiology after corn harvest

et al. 2020

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Legume green manure is a popular practice for sustainable agriculture in tropical environments. The use of grain, forage and purely green manure legumes in a subhumid tropical area in Northeast Brazil was investigated to determine the total C and N contents and estimate C-microbial biomass, soil basal respiration, microbial and metabolic quotients, before and after green manures and after the following corn. It was hypothesized that, although all legumes would increase microbial biomass and activity, there would be different effects in function of the main economic usage of the legume. The experimental design evaluated the soil before and after harvest of seven legumes: (i) purely green manures -sunn hemp (Crotalaria juncea L.) and velvet bean (Stizolobium aterrimum Piper & Tracy); (ii) forage -Campo Grande stylo (a physical mixture of 80% of Stylosanthes captata Vog. and 20% of Stylosanthes macrocephala) and calopo (Calopogonium mucunoides Dev.) and (iii) grain -common bean (Phaseolus vulgaris L.), cowpea (Vigna unguiculata L.) and peanut (Arachis hypogaea L.), followed by corn crop. After corn harvest, soils had the same total C and N contents before legume seeding, but C-microbial biomass was significantly higher in soils with grain and purely green manures, which produced higher shoot and root dry mass. Soil basal respiration decreased after corn harvest for all legumes comparing to control treatments, but metabolic stress increased in soils with forage species. Despite this, microbial quotient indicated an efficiency of the microorganisms in degrading the residual organic matter of all green manures used in corn.

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Overcoming Tegumentary Numbness in Seeds of Crotalaria spectabilis and Crotalaria paulinea

Maia,

Araújo,

Da Silva

et al. 2023

RGSA

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Objective: To evaluate the efficiency of dormancy breaking methods in seeds of C. paulinea and C. Spectabilis. Theoretical reference: Species of crotalaria, such as C. paulinea and C. spectabilis, found in the Brazilian territory, are used as green manure in large crops and vegetable productions. However, the presence of tegumentary hardness in their seeds can result in failures in soil cover, which favor the emergence of weeds. Method/design/approach: The research was carried out at the Laboratório de Análise de Sementes of the Departamento de Agronomia, at the Universidade Federal de Viçosa, Minas Gerais. Twenty treatments were applied to the seeds to break dormancy, using mechanical scarification with 120 grit sandpaper, hot water in an oven at 90 °C for five and seven minutes, and immersion in sodium hypochlorite at four concentrations, 2%, 4%, 6% and 8%, for four times, two, four, six and eight hours. Results and conclusion: The most efficient treatments for breaking this dormancy in both species of crotalaria were scarification with sandpaper and immersion in water at 90±3 °C for seven minutes. Treatments using sodium hypochlorite were not effective in reducing the number of hard seeds. Originality/value: Feasibility of the methods applied to break dormancy in seeds of C. paulinea and C. Spectabilis, since they are used for green manure, and control of Aedes aegypti, among other purposes.

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Parameters of Soybean Cultivated in Succession With Intercropping System of Out-of-Season Corn With Green Manure

Cited by 3 publications

References 7 publications

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Effects of different legume green manures on tropical soil microbiology after corn harvest

Overcoming Tegumentary Numbness in Seeds of Crotalaria spectabilis and Crotalaria paulinea

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