Abstract
Impedance to the extension of potato roots in a high-strength soil was reduced by chiseling with a subsoil shank directly in the center of the potato bed (precision tillage). Precision tilling just before planting was done to a depth of 60 cm below the bed crest. The resulting reduction in soil strength improved rooting below 30 cm and allowed roots to extend into soil below the tilled zone. Tuber production was increased 6–10% in the year tillage was performed.
Resumen
La impedancia a la extencion de las raíces de la papa en un suelo altamente resistente fue reducido aflojando con un arado de subsuelo directamente en el centro del surco de la papa (labranza de precisión). La labranza de precision justo antes de la plantacion fue hecha a una profundidad de 60 cm por debajo de la cresta del surco. La reducción resultante en la resistencia del suelo mejoró el enraizamiento por debajo de 30 cm y permitió que las raíces se extendieran en el suelo debajo de la zona de labranza. La productión de tubérculos aumento 6–10% en el año que se realizó la labranza.
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Contribution from the departments of Vegetable Crops and Land, Air and Water Resources: Water Science and Engineering Section, University of California, Davis 95616.
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Bishop, J.C., Grimes, D.W. Precision tillage effects on potato root and tuber production. American Potato Journal 55, 65–71 (1978). https://doi.org/10.1007/BF02852093
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DOI: https://doi.org/10.1007/BF02852093