Growth regulators are used in agriculture to reduce vegetative growth, promote flowering and fruiting processes, and regulate production alternations. In this study, the effects of the use of paclobutrazol (PBZ) and different plant arrangements on the development and productive yield tomatoes grown for industrial use were evaluated. This experiment was carried out in the experimental area of the Universidade Estadual de Goiás, in a randomized block design with a 2×5 factorial arrangement (presence of PBZ and absence of PBZ in seedlings × planting spacing), with four replications and ten plants per plot. The paclobutrazol (growth regulator) applications were carried out in seedlings 15 days after emergence by applying 3.5 mL of the solution per tray at a concentration of 42.5 mg L-1 using a commercial product containing 25% of the active ingredient for the solution. The spacings were 0.15, 0.20, 0.25, 0.30, and 0.35 m between plants and 1.4 m between rows, corresponding to populations of 47,619; 35,714; 28,714; 23,809 and 20,408 plants/ha, respectively. The initial growth and development of the seedlings, characteristics related to productivity, and the physical and chemical quality of fruits harvested in each experiment were evaluated. It was observed that the application of paclobutrazol influenced the phylotechnical characteristics and technological quality of tomato fruits grown for industrial processing. The planting spacings between 0.21 and 0.27 m had better crop development and productivity.

Pepper cultivation is widely accepted by consumers and is responsible for supporting the establishment of family farming by providing employment for manpower. This study aimed to investigate the effects of nitrogen fertilization and hydroretentor gel application on the development and productivity of Capsicum sp. Each experiment applied a 2 x 5 factorial randomized block design, with and without the application of hydroretentor gel (factor A) with five N (factor B) doses (0; 50; 100; 150 and 200 kg ha-1), and four replications. Analysis was made of the foliar nitrogen content, chlorophyll content, plant height, stem diameter, fruit length, fruit diameter, fruit number and weight, and productivity. The application of gel hidroretentor only influenced the culture of chilli pepper in the development and productivity. The nitrogen doses increased the productivity of yellow chilli and favored only the development of chilli pepper

Resumo Objetivou-se avaliar a associação do uso de hidrogel e utilização da adubação nitrogenada na cultura do tomateiro de mesa. Foi conduzido um experimento, no Instituto Federal Goiano-Campus Morrinhos. As plantas foram conduzidas verticalmente utilizando-se fitilhos como suporte e mantendo-se oito cachos por planta. O delineamento experimental adotado foi o de blocos com os tratamentos ao acaso, com quatro repetições. Os tratamentos foram dispostos em parcelas subdivididas duas aplicações (com e sem gel hidroretentor) e quatro adubações nitrogenadas (0; 180; 360 e 540 kg ha-1). As adubações de cobertura foram realizadas aos 25; 40; 55; 70; 85; 100 e 115 dias após o transplantio das mudas, respectivamente. Verificou-se que a fonte de variação hidrogel ocorreu efeito significativos, no diâmetro do caule final, matéria verde e textura do fruto. Para o fator doses de nitrogênio, os resultados apontam incrementos nas características clorofila na região basal, média e apical da planta, diâmetro do caule final, matéria seca e verde, número de frutos médios, peso por quilograma de frutos médios na área útil, taxa de crescimento absoluto par altura da planta e produtividade por hectare. A aplicação do gel hidroretentor não influenciou na produção do tomateiro de mesa cv. Santy. Palavras-chave: Solanum lycopersicum L; clorofila; doses de nitrogênio; pós colheita tomateiro. Nitrogen fertilization associated with the hydroretting gel in the production and growth of the table tomato