What is it about?
Cassava is a perennial plant. The shoot pruning when the cassava is at autumn-winter resting phase, due to the low rainfall and temperatures, is a management that helps to control the weeds during the second vegetative cycle. However, when the soil is not deficient in potassium, the K supply at the begins of the second vegetative cycle does not increase the storage root production. However, the N supply during this period stimulates the leaf recomposition and the yield of the cassava harvested with two vegetative cycles (22 months).
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Why is it important?
Our findings show that in the cassava harvested with two vegetative cycles, the shoot pruning during the autumn-winter resting phase does not affect the cassava yield, and the supply of N at the beginning of the second vegetative cycle of cassava is an alternative to increase the yields of root, flour, and starch.
Perspectives
Writing this article we authors hope to have contributed with important findings for cassava cultivation systems in tropical countries. Cassava is an important source of food in tropical regions of the world. Thus, we hope that the results of this research can contribute to a better management of cassava production in these environments and that readers find this article thought-provoking.
Adalton Fernandes
São Paulo State University, Center of Tropical Roots and Starches
Read the Original
This page is a summary of: Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium, Agronomy Journal, March 2020, Wiley,
DOI: 10.1002/agj2.20113.
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