Abstract1 Engenheiro Agrônomo. E-mail: ricardo_ac83@hotmail.com 2 Acadêmico do curso de Agronomia e bolsista de iniciação científica -Unicesumar. E-mail: bento.anderson@hotmail.com 3 Professor Especialista do curso Agronomia do Unicesumar. E-mail: humberto.moreski@unicesumar.edu.br 4 Professora Doutora do curso de Agronomia do Unicesumar, atua na área de Fitopatologia e Biologia do Solo. E-mail: francipg@gmail.com DOI: 10.5433/1679 Green manuring is the practice of using plant species in rotation, succession or intercropped with other crops, aiming improvement, maintenance and recovery of physical, chemical and biological soil properties. The objective was to evaluate the influence of different green manures on soil characteristics and productivity of soybean. The experiment was conducted in Maringá (PR) in a randomized block design with six treatments and four replications: T1: oat (Avena Sativa), T2: black oat (Avena strigosa), T3: dwarf pigeon pea (Cajanus cajan), T4: radish (Raphanus sativus L.), T5: white lupine (Lupinus albus) and T6: control (fallow). At the end of the experiment, relations were established between the green manure used for soybean production, the production of biomass, the development of microorganisms and soil bulk density. The data were analyzed with statistical software and means were compared by Tukey test at 5% probability. The coverages provided higher content of dry matter were lupine, black oat and faba bean. Treatments that most influenced the increase of soil microorganisms were lupine, radish and pigeonpea. Regarding productivity, higher values were obtained in treatments with pigeon pea, lupine and oat. The apparent density of the soil, treatment with turnip showed better results.A adubação verde consiste na prática de uso de espécies vegetais em rotação, sucessão ou consorciação com outras culturas comerciais, objetivando melhoria, manutenção e recuperação das propriedades físicas, químicas e biológicas do solo. Assim, objetivou-se avaliar a influência de diferentes adubos verdes nas características do solo e na produtividade da cultura de soja. O experimento foi realizado em Maringá (PR), em delineamento de blocos casualizados, com seis tratamentos e quatro repetições: T1: aveia branca (Avena Sativa); T2: aveia preta (Avena strigosa), T3: guandu anão (Cajanus cajan), T4: nabo forrageiro (Raphanus sativus L.), T5: tremoço branco (Lupinus albus) e T6: testemunha (pousio). Ao final do experimento foram estabelecidas relações entre o adubo verde utilizado, à produção de soja, à produção de fitomassa, ao desenvolvimento de microrganismos e densidade aparente do solo. Os dados foram analisados em programa estatístico e as médias comparadas pelo teste de Tukey a 5% de probabilidade. As coberturas que propiciaram maior teor de fitomassa foram o tremoço, a aveia preta e feijão guandu. Os tratamentos que mais influenciaram o aumento de microrganismos do solo foram o tremoço, nabo forrageiro e feijão guandu. Em relação à produtividade, maiores valores encontrados foram obtidos nos tra...
Most Brazilian soils have low organic matter content, and the current management systems used in agriculture contribute to worsening this situation. The introduction of practices that lead to the increase of soil organic matter becomes more necessary for agrosystems to be sustainable, ensuring high yields because only then the production chain becomes profitable and enables agricultural production. The present work aimed to investigate the effect of intercropping practices among corn crop with different green manures in soybean agronomic parameters. The work consisted of five treatments using Brachiaria ruziziensis (Brachiaria); Raphanus sativus (Forage Turnip); Crotalaria spectabilis cv. Common (Crotalaria); Avena strigosa (Black Oats); and a control area (single maize) with five replications. Different aspects related to successor cultivation with soybean were evaluated taking into consideration agronomic aspects such as stem thickness, number of pods, plant height, the weight of one thousand grains and yield per hectare presented by the crop. The work demonstrated that brachiaria green manure in consortium with out-of-season corn crop promoted the highest plant height and number of pods for the soybean crop in succession.
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