ABSORPTION AND NUTRIENTS USE EFFICIENCY BY POTATO CULTIVARS

作者：Fernandes Adalton Mazetti^*; Soratto Rogerio Peres

来源：Bioscience Journal, 2013, 29(1): 91-100.

• Solanum tuberosum
• Mineral nutrition
• Absorption
• Metabolism

The use of cultivars efficient in nutrient use is essential to increase yield and reduce production costs. The objective of this study was to evaluate absorption and nutrients use efficiency on five potato cultivars. The experiment was conduced in Itai, Sao Paulo State, Brazil, in winter cropping season of 2008 on Oxisol. The experimental design was randomized blocks with split-plots and four replications. Plots comprised the five potato cultivars and subplots were established by sampling times, performed at planting and every seven days after emergence. At 97 DAP was calculated the nutrients use efficiency for dry matter production and at 122 DAP were calculated the nutrients use efficiency for fresh tuber and tuber dry matter yield. Mondial and Asterix cultivars showed greater dry matter production, higher fresh tubers yield and nutrients accumulation. Nutrients use efficiency for total dry matter and tubers dry matter, was similar among cultivars, but Agata was more efficient in nutrients use efficiency for fresh tubers yield.

• 出版日期2013-2