This research aims at analyzing the determinants of the adoption and the intensity of adoption of precision agriculture technologies (PATs) by sugarcane farmers in the state of São Paulo, Brazil. A sample survey of 131 sugarcane farmers provided the data. Six adopted PATs were identified: GNSS and images for planting row orientation (52 adopters), tractor/harvester with automatic guidance system (32), georeferenced grids for soil sampling (15), images (satellite and/or drone) for mapping pests and yields (8), variable-rate applicators of fertilizers (8), and variable-rate applicators of pesticide (3). The adoption and adoption intensity (dependent variable) were measured as the number of PATs used by farmers. 53 farmers adopted at least one of these technologies, while 78 farmers did not adopt PATs. A count data model was used to test hypotheses on factors explaining both adoption and the intensity of adoption. The results suggested that the information provided by the sugarcane mills, the production scale and farmer perception that PATs would increase yield are determining factors for adoption. Information provided by private technical advisors and obtained at agricultural events plays an important role in the intensity of adoption. Such intensity is also affected by farmers’ previous experience with PATs, their perception that PATs would increase yield, and the availability of low-cost credit.

本研究旨在分析巴西圣保罗州甘蔗农民采用精准农业技术 (PAT) 的决定因素和采用强度。对 131 名甘蔗农的抽样调查提供了数据。确定了六种采用的 PAT：GNSS 和用于种植行方向的图像（52 个采用者）、带自动引导系统的拖拉机/收割机（32 个）、用于土壤采样的地理参考网格（15 个）、用于绘制害虫地图的图像（卫星和/或无人机）和产量 (8)、可变施肥器 (8) 和可变施药器 (3)。采用和采用强度（因变量）是用农民使用的 PAT 数量来衡量的。53 名农民至少采用了其中一种技术，而 78 名农民没有采用 PAT。计数数据模型用于检验关于解释采用和采用强度的因素的假设。结果表明，甘蔗厂提供的信息、生产规模和农民对 PAT 会增加产量的看法是采用 PAT 的决定性因素。私人技术顾问提供的信息和在农业活动中获得的信息在采用强度方面起着重要作用。这种强度还受到农民以前使用 PAT 的经验、他们对 PAT 会增加产量的看法以及低成本信贷可用性的影响。私人技术顾问提供的信息和在农业活动中获得的信息在采用强度方面起着重要作用。这种强度还受到农民以前使用 PAT 的经验、他们对 PAT 会增加产量的看法以及低成本信贷可用性的影响。私人技术顾问提供的信息和在农业活动中获得的信息在采用强度方面起着重要作用。这种强度还受到农民以前使用 PAT 的经验、他们对 PAT 会增加产量的看法以及低成本信贷可用性的影响。