José Roberto Portugal

• Abstract

  This research is a continuation of a long-term cover-cropping experiment initiated in the 2006/07 season at Experimental Lageado Farm of the College of Agricultural Science at UNESP, in Botucatu - SP. This is one of the longest cropping system experiments in São Paulo State, registered in the Global Long-Term Agricultural Experiment Network, organized by Rothamsted Research. Since its inc…

  Long-term cover-cropping systems: 15N-fertilizer recovery and soil organic matter quality affected by intercropping, BP.PD

• Abstract

  Knowledge of production systems involving cover crops for the cultivation of upland rice, soybean and maize intercropped with Brachiaria in second crop is of paramount importance for agricultural sustainability. The objective is to evaluate production systems using cover crops in upland rice, soybean and second crop corn intercropping with Brachiaria in the Cerrado region. The project con…

  Production systems for second harvest corn intercropped with Brachiaria ruziziensis, involving rotation crops with cover crops, rice and soybean, BP.DR

• Abstract

  Maize is one of the most important worldwide, besides the food, is based animal feed. Management techniques in maize are needed in order to increase productivity, minimizing costs and environmental impacts. This study will evaluate different cover crops (millet, sun hemp, pea, pearl millet + sun hemp, millet and pigeonpea + fallow), N rates (0, 40, 80 and 120 kg ha-1) with and without see…

  Hedging plants and nitrogen doses associated with inoculation with Azospirillum brasilense in maize cultivation in the cerrado region, BP.MS

(Only some records are available in English at this moment)

• Abstract

  This research is a continuation of a long-term cover-cropping experiment initiated in the 2006 season at Lageado Experimental Farm in Botucatu - SP. This is experiment part of the Global Long-Term Agricultural Experiment Network organized by Rothamsted Research. In tropical regions, crop rotation and cover crop adoption are necessary to increase soil organic matter (SOM) in conservation a…

  Modeling the dynamics of soil organic matter in long-term cover-cropping systems, BE.EP.PD