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Growth and nutrition of cacao seedlings influenced by zinc application in soil
- RAIMUNDO DE OLIVEIRA CRUZ NETO, JOSÉ OLIMPIO DE SOUZA JÚNIOR, GEORGE ANDRADE SODRÉ, VIRUPAX CHANABASAPPA BALIGAR
- Revista Brasileira de Fruticultura 2015 v.37 no.4 pp. 1053-1064
- Oxisols, Theobroma cacao, calcium, copper, crops, dry matter accumulation, fertilizer rates, iron, leaves, magnesium, manganese, nutrient content, phosphorus, potassium, roots, seedlings, shoots, soil treatment, stems, texture, toxicity, tree nutrition, tropical soils, zinc
- Levels of Zn in tropical soils profoundly influences growth and nutrition of tree crops. Research was undertaken to assess the effect of soil Zn on growth and nutrition of clonal cacao tree seedlings of PH 16. Three acidic Oxisol soils differing in texture were used with nine doses of Zn (0, 1, 2, 4, 8, 16, 32, 48, and 64 mg dm-3). Rooted clonal seedlings were grown in plastic pot with 11 dm-3 of the soils at varying Zn levels for 240 days. At harvest growth (dry matter mass of leaves, stems, shoots, roots, and total) and nutrient concentrations were determined. The clonal cacao seedlings showed differences for production of dry matter mass and foliar nutrient concentrations for P, K, Ca, Mg, Mn, Fe, Zn, and Cu. There was Zn toxicity in all soils.