Outplanting performace of eucalyptus clonal cuttings produced in different containers and substrates

Abstract

-The objective of this work was to evaluate the outplanting growth of Eucalyptus grandis e E. saligna clones, produced by cuttings in tubes (50cm 3 ) and in pressed blocks (40x60x07cm) -175 cm 3 / seedlings, with different substrates (BT -sugarcane bagasse+sugarcane filter cake; AR -carbonized rice hull + eucalyptus bark; TF -peat). The experiment was arranged in a randomized block design, in a 2x7 factorial (2 clones and 7 treatments), with four replicates with 25 plants. Survival was evaluated two months later. Plant growth was monitored through height and ground level diameter at 20, 40, 60, 120 and 180 days after outplanting. To evaluate the effect of the containers on stem and root biomass in both clones, 180 days after outplanting, the cuttings grown in BT substrate with fertilizer were selected. One plant per plot of each clone, grown in tubes and in pressed blocks was selected. The E. grandis and E. saligna cuttings grown in pressed blocks with sugarcane bagasse+sugarcane filter cake presented greater height and diameter after out planting. Both clones presented larger root, bark, log and branch biomass production in plants produced in the block system. Cuttings of E. saligna grown in pressed blocks showed 80% most wood biomass 180 days after outplanting, compared to that grown in tubes. In E. grandis, the differences in diameter and height, in function of the cutting production system, decreased along time, while in E. saligna these differences increased along the evaluation period.Keywords: Root deformation, biomass and cuttings. DESEMPENHO PÓS-PLANTIO DE MUDAS CLONAIS DE EUCALIPTO PRODUZIDAS EM DIFERENTES RECIPIENTES E SUBSTRATOS RESUMO -O objetivo deste trabalho foi avaliar o crescimento no campo dos clones de

Correlations between Eucalyptus Clonal Cutting Quality and Performance after Planting

“…Cutting height is considered one of the oldest class characteristics for cutting classification and selection. The positive correlation between H and field height is in agreement with different studies such as that by Barroso et al (2000), who assessed Eucalyptus camaldulensis and E. urophylla up to 10 months after planting, Freitas et al (2008), who assessed the post-planting performance of eucalyptus clonal cuttings produced in different recipients and substrates up to 180 days after planting, and Figueiredo et al (2011), who assessed the effect of biometric variations of eucalyptus clonal cuttings on field growth up to 12 months after planting. This correlation was attributed to a selection of the best cuttings in the nursery, with greater heights and consequently greater root development (Freitas et al, Table 3.…”

CRESCIMENTO, NUTRIÇÃO E QUALIDADE DE MUDAS DE Pouteria garderiana (A. DC.) RADLK. PRODUZIDAS EM SUBSTRATOS ORGÂNICOS

“…Similar results of the macronutrients foliar contents also were obtained from swine manure (NADDAF et al, 2011). The use of sugarcane bagasse and filter cake also showed good availability of nutrients, and studies have corroborated the effective use of these components (FREITAS et al, 2008). In the case of micronutrient guapeva leaves content, there was a significant difference only for B, Fe and Mn (Table 5).…”

Produção de mudas de <i>Ceiba speciosa</i> em diferentes volumes de tubetes utilizando o biossólido como substrato

“…A diferença após o plantio mais evidente ocorreu no tubete de 55 cm³ em relação aos outros tratamentos, no qual se apresentaram valores de altura aquém dos encontrados nas embalagens maiores (Figura 3). Freitas et al (2008), em um estudo com clones de Eucalyptus grandis e E. saligna, mostraram que as plantas originárias de mudas de recipientes de maior volume obtiveram maiores valores de altura, diâmetro e biomassa de raízes aos 180 dias após plantio, sendo que o ganho na produção de lenho foi até 80 % maior que nas plantas oriundas de tubetes de 50 cm³.…”