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Development of tamarind seedlings: recipient size, substrate, seed weight and sowing depth

by de Almeida, Marcelo Sales

Abstract (Summary)
This study expanded the knowledge on tamarind (Tamarindus indica L.)seedling production by analyzing the effects of different container sizes and vermiculitedoses in a commercial substrate and seed size and different sowing depths in a nurseryseedling production. The experiments were done at the experimental farm Água Limpain the sector of Fruit Crops, in a nursery with anti-aphid screens, with 0.38 mm2opening. The farm is located at 19º05?23?S and 48º21?28?W, at 792 m altitude, in thecounty of Uberlândia, Minas Gerais, Brazil. The experimental design of the trials wererandomized blocks, in a 3 x 3 or 2 x 3 factorial. In the first trial, were utilizadas threevermiculite doses (0%, 10% or 20% v v-¹) in three container sizes (18 x 30 cm, 20 x 25cm or 25 x 35 cm), and in the second trial, utilizou-se two seed sizes (small and large)and three sowing depths (1cm; 2cm or 3cm), both of them with 5 repetitions and 5plants per plot. The experiments were done from December 26 2006 to June 4 2007. Inthe first trial, results indicated that tamarind seedlings were not affected by containersize, nor by the use of vermiculite. However, the largest container (25 x 35 cm) yieldedlonger root length, although reducing stem diameter and above ground fresh and drymatter. Mixing vermiculite to the substrate yielded better results for stem diameter,number of leaves, fresh and dry matter of roots and above ground mass. In the secondtrial, the results indicated that bigger seeds yielded greater quality tamarind seedlingsfor plant height, stem diameter, fresh and dry matter for above ground mass and roots.There were no significant differences in the parameters evaluated as a function ofsowing depth. CHAPTER I: This study evaluated the effects of different vermiculite doses and container sizesin the development and quality of tamarind seedlings. The experiment was done in anursery with anti-aphid screens, with 0.38 mm2 opening, in the sector of fruitExperimental Farm Água Limpa, county of Uberlândia (MG), from December 26 2006to June 4 2007. The experimental design was randomized blocks , in a 3 x 3 factorial,with 5 repetitions and 5 plants per plot. The factors were three vermiculite doses (0%,10% or 20% v v-¹) and three container sizes (18 x 30 cm, 20 x 25 cm or 25 x 35 cm).The development of tamarind seedlings was evaluated by the determination of thenumber of leaves, stem diameter, plant height, root length, fresh and dry weight of rootsand above ground matter. The results showed that tamarind seedling height was notaffected by container sized nor by the use of vermiculite. The largest container (25 x 35cm) yielded better root length; however, stem diameter and above ground fresh and drymatter were reduced. Mixing vermiculite to the substrate yielded better results for stemdiameter, number of leaves, fresh and dry matter of roots and above ground mass. CHAPTER II: The effect of seed size and different sowing depths on tamarind (Tamarindus indica L.)seedling vigor and vegetative growth was evaluated in a trial done in a screenednursery, with 0.38 mm2 opening, at the experimental farm Água Limpa, in a nurserywith anti-aphid screens, in the county of Uberlândia,. The farm is located at 18º55?33?Sand 48º17?19?W, at 872 m altitude, Minas Gerais, from December 26 2006 to June 42007. The experimental design was randomized blocks, in a 2 x 3 factorial, with 5repetitions and 5 plants per plot. The factors were two seed sizes, small and large (65.60g and 94.54 g respectively), defined according to the weight of 100 seeds and threesowing depths (1cm; 2cm or 3cm). The number of leaves, stem diameter, plant height,root length, fresh and dry weight of roots and above ground matter were evaluated. Theresults indicate that tamarind seed size affected seedling initial development. Therewere no significant differences in the parameters evaluated as a function of sowingdepth.
This document abstract is also available in Portuguese.
Bibliographical Information:

Advisor:Mauricio Martins; Pedro Henrique Ferreira Tomé; Monalisa Alves Diniz da Silva; Berildo de Melo

School:Universidade Federal de Uberlândia

School Location:Brazil

Source Type:Master's Thesis

Keywords:Tamarindus indica L Vermiculite doses Seed size

ISBN:

Date of Publication:03/07/2008

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