1. Relationship between leaf-nutrient status, biochemical activity, pruning success and fruit yield of mangoes.
- Author
-
Cavalcante, Ítalo Herbert Lucena, Gomes, Valéria Ribeiro, Silva, Luan dos Santos, Cunha, Jailson Cavalcante, and Henrique Maciel, Lucas
- Subjects
FRUIT yield ,NUTRITIONAL status ,SPROUTS ,MANGANESE ,GERMINATION ,MANGO - Abstract
Understanding the nutritional dynamics before pruning is essential to elucidate how nutrient reserves affect the mango tree's ability to regenerate tissues. A research project was carried out to determine the adequate range of supply for mango sprout phase (pre-pruning) in two different mango leaves (from the first and second vegetative flushes), and evaluate effect of biochemical activity on mango sprouting and correlate it with fruit yield. Two experiments with 'Ataulfo' and 'Kent' mangoes were carried out from 2021 to 2023. The experiments were arranged in randomized blocks with treatments distributed in subdivided plots referring to two N sources (NO
3 - , NH4 + ) in the plots and N doses (0, 50, 100, 150 and 200% of the recommended dose) in the subplots. The leaf nutrient concentrations, sodium, and α-amylase were evaluated in leaves of the 1st and 2nd vegetative flush, the number of shoots per pruned branch, and fruit yield. The number of shoots per pruned branch, influenced by the nutritional status prior to production pruning, varies with nutrient, and the 2nd vegetative flush after the previous pruning has a greater impact on shoot development in the current cycle. The shoot growth of the 'Ataulfo' after production pruning depends on leaf concentrations of phosphorus, potassium, calcium, sulfur, cooper, manganese, zinc and molybdenum, in addition to sodium, while 'Kent' depends only on phosphorus, cooper, iron, manganese, and zinc. The highest fruit yield indices are recorded under the average number of sprouts per pruned branch of 2.72 for 'Ataulfo' and 2.63 for 'Kent'. [ABSTRACT FROM AUTHOR]- Published
- 2025
- Full Text
- View/download PDF