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Coffee Orchard Response to Enhanced efficiency phosphate Fertilizer

American Journal of plant Sciences 2023年第12期14卷 1439-1452页

作者： Roberto A. Reis Jr Douglas R. Guelfi Taylor L. Souza R&D Wirstchat Polímeros do Brasil Londrina Brazil Soil Science Department Federal University of Lavras—UFLA Lavras Brazil

phosphorus (p) plays a crucial role in plant growth by aiding in the development of strong roots, promoting flower and fruit formation, and aiding in photosynthesis. Studies to improve p fertilizers efficiency in coffee orchards are necessary due to the need for better efficiency and the lack of information on enhanced efficiency p fertilizers. This study aimed to investigate the effect of MAp coated with anionic polymers (policote) on coffee orchard development. A coffee trial was carried out in a randomized block design with three replications. The treatments, applied at coffee planting, were arranged in an incomplete factorial (2 × 4) + 1, using two p sources (MAp and policote coated MAp), four p rates (40, 80, 120, and 160 g p2O5 plantp>-1p>) and control (without application of p fertilizer). plant height was evaluated in the 2016/2017, 2017/2018, and 2018/2019 seasons, while coffee bean maturation, yield, and agronomic p efficiency use were evaluated in the last two seasons. p fertilization did not affect coffee bean maturation and increased coffee yield in 31-month-old plants when differences among p sources and rates were observed. Using policote-coated p fertilizer resulted in higher yields at the same p rate, as well as similar yields at a lower p rate, compared to conventional fertilizer. policote-coated p fertilizer can be used as an enhanced efficiency fertilizer and is an efficient way to deliver required p to plants. The target for reducing farm investment, increasing agricultural profits, preserving phosphatic rock reserves, and avoiding the overuse of phosphate fertilizer could be realized through the rational use of enhanced efficiency fertilizers.

关键词： agronomic p efficiency Coffee Bean Maturation policote

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