Adubação orgânica em tomateiros do grupo cereja

Abstract

ResumoO tomate cereja (Solanum lycopersicum) é altamente exigente em relação aos nutrientes minerais. O uso do esterco animal mostra-se uma forma eficiente e sustentável de adubação para essa cultura. O objetivo deste trabalho foi avaliar o efeito de diferentes doses de esterco bovino no crescimento vegetativo e reprodutivo do tomate cereja. O experimento foi conduzido em casa de vegetação do Departamento de Fitotecnia da Universidade Federal de Viçosa, sendo utilizando delineamento experimental inteiramente casualizado, com cinco tratamentos e quatro repetições, além de um tratamento controle utilizando fertilizante químico como fonte de NPK. Após 45 dias do início do experimento foram avaliados o número de folhas, de flores e de frutos, a massa seca de folhas, caule, flores, frutos e raízes, o comprimento do caule e o volume radicular. Foi avaliado, também, o teor de nutrientes em folhas, caule e raízes. As plantas cultivadas com fertilizante químico obtiveram menor média em todas as variáveis fitotécnicas analisadas. O número de folhas e frutos e a produção de matéria seca de folhas, frutos e caule apresentaram resposta linear crescente com o aumento das doses de esterco. Os teores foliares de Ca, Mg e S foram maiores no tratamento com adubação química. Palavras-chave: Crescimento; Produção de frutos; Solanum lycopersicum AbstractOrganic fertilization in cherry tomato plants. Cherry tomato (Solanum lycopersicum) is highly demanding with regard to mineral nutrients. The use of animal manure shows to be an efficient and sustainable fertilization way for this crop. This study aimed to evaluate the effect of different doses of cattle manure in the vegetative and reproductive growth of cherry tomato. The experiment was conducted in a greenhouse at the Plant Science Department of Universidade Federal de Vicosa, using a completely randomized experimental design with 5 treatments and 4 replications, besides 1 control treatment using chemical fertilizer as a source of NPK. After 45 days from the beginning of the experiment, the number of leaves, flowers, and fruits, the dry mass of leaves, stem, flowers, fruits, and roots, the stem length, and the root volume were evaluated. The nutrient content in leaves, stem, and roots was also evaluated. Plants grown with chemical fertilizer obtained a lower average for all phytotechnical variables analyzed. The number of leaves and fruits, and the production of dry matter of Biotemas, 26 (1): 37-44, março de 2013

Organic fertilization as an alternative to the chemical in cherry tomato growing under irrigation depths

“…The treatments with organic and chemical fertilizer provide larger diameters due to being rich in potassium that promotes increase in diameter, being one of the most required elements especially for performing the functions of carbohydrate translocation and regulation of stoma opening and closing. Potassium still influences tissue formation and plant respiration processes, increasing sugar content, size, weight and resistance to fruit handling (Maia et al 2013).…”

“…For water depths, decimal fraction and five levels of crop evapotranspiration -ETc (Fraction (F) of 70%, 85%, 100%, 115% and 130% of the ETc) were used for the water depths. For fertilization type factor, three types were used: no fertilized soil (Control), NPK fertilized soil (Chemical fertilization: Urea, Simple Superphosphate and Potassium Chloride) based on the recommendations of Novais et al (2007) and fertilized with earthworm humus (Organic Fertilization) based on the recommendation of Maia et al (2013), with five replications, totaling 75 experimental plots.…”

Composting of household organic waste and its effects on growth and mineral composition of cherry tomato

“…According to Fan et al (2018), phosphorus is an important nutrient for root growth and plays a critical role in plant metabolism. Maia et al (2013) investigated the effect of organic fertilization on cherry tomato plants and found higher phosphorus levels in plants treated with a mix of soil and cattle manure. Similarly, the highest phosphorus concentration was observed under the lower manure proportion.…”

“…Several authors have reported the influence of organic fertilization on the mineral composition of tomato leaves. Maia et al (2013) found that the macro-and micronutrient contents in cherry tomato leaves under different doses of cattle manure compared to the chemical fertilization were influenced by the addition of the organic fertilizer to the contents of N, P, K, Ca, Mg, S, Mn and Zn.…”

Produção De Biomassa Vegetal Hortícola Através De Um Sistema De Aquaponia Associada Ao Cultivo De Tilápia Oreochromis Niloticus – Variedade Gift / Production of Horticultural Vegetable Biomass Through an Aquaponics System Associated With the Cultivation of Nile Tilapia Oreochromis Niloticus - Gift Variety

“…Ainda assim, a adubação orgânica é suficiente para que produza bem, pois se adapta bem às condições de diferentes solos, podendo ser irrigado, inclusive, com águas de diferentes salinidades sob tais circunstâncias. O uso de efluentes de peixes, esterco bovino e outros adubos orgânicos podem incrementar a produtividade do tomateiro(MAIA et al, 2013). A produção do tomate cereja depende diretamente da matéria orgânica ofertada às mudas e da luz solar ENDUT et al, 2009).…”