2 results

Allometric equations for biomass and contents of macronutrients in a young Tectona grandis stand

Márcio Luiz dos Santos ORCID logo , Helio Garcia Leite ORCID logo , Valéria Santos Cavalcante ORCID logo , Loane Vaz Fernandes ORCID logo , Júlio César Lima Neves ORCID logo

23/Sep/2022

ABSTRACT Evaluations of biomass and nutrient contents in teak stands are necessary alternatives for avoiding early cutting to provide supplemental data for the plant module of fertilization recommendation systems. This study aimed to adjust allometric equations to estimate the accumulation of biomass and nutrient contents in teak plantations in the central region of Brazil. Plots in seminal and clonal stands contained 81 trees aged 75 months, that had not received previous fertilization or thinning. Additional clonal stands aged 15, 51 […]

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Growth, dry mass partitioning, and Na+, K+, and Cl retention by two sorghum genotypes irrigated with saline water

Alexandre José Silva de Aquino, Claudivan Feitosa de Lacerda, Marlos Alves Bezerra, Enéas Gomes Filho, Raimundo Nonato Távora Costa

01/Oct/2007

The mechanisms for salt tolerance are complex and depend upon physiological and anatomical changes occurring in the whole-plant. This research aimed at evaluating ion retention, vegetative growth, and dry matter partitioning by two forage sorghum genotypes [Sorghum Bicolor (L.) Moench] irrigated with saline water. Selected seeds were sown in plastic pots containing 12 kg a sandy Argisol and grown under greenhouse conditions. The experiment was in completely randomized with treatments arranged in a 2 x 5 factorial design, consisting of […]