Development of seedlings of watermelon cv. Crimson Sweet irrigated with biosaline water

Abstract

A B S T R A C TThe limited access and the scarcity of good quality water for agriculture are some of the major problems faced in agricultural areas, particularly in arid and semiarid regions. The aim of this study was to evaluate the quality of watermelon seedlings (cv. Crimson Sweet), irrigated with different concentrations of biosaline water of fish culture. The experimental design was completely randomized with five treatments, corresponding to biosaline water at different concentrations (0, 33, 50, 67 and 100%), and four replicates of 108 seedlings. Watermelon seeds were sown in plastic trays filled with commercial substrate and irrigated with different solutions of biosaline water. Seedlings were harvested for biometric analysis at 14, 21 and 28 days after sowing. The use of biosaline water did not affect emergence and establishment of seedlings until 14 days after sowing, the period recommended for transplantation. However, the use of biosaline water affected the development of seedlings with longer exposure time.Desenvolvimento de mudas de melancia cv. Crimson Sweet em água biossalina R E S U M O A limitação ao acesso e a escassez de água de boa qualidade para a agricultura são alguns dos principais problemas enfrentados em áreas agrícolas principalmente em regiões áridas e semiáridas. Objetivou-se, neste trabalho, avaliar a qualidade das mudas de melancia cv. Crimson Sweet, irrigadas com diferentes concentrações de água biossalina de cultivo de peixe. O delineamento experimental foi inteiramente casualizado com cinco tratamentos correspondendo a soluções de água biossalina em diferentes concentrações (0, 33, 50, 67 e 100%) e quatro repetições, de 108 mudas. As sementes de melancia cv. Crimson Sweet foram semeadas em bandejas plásticas preenchidas com substrato comercial e irrigadas com as diferentes soluções de água biossalina. As mudas foram coletadas para realização das análises biométricas aos 14,21 e 28 dias após a semeadura. O uso de água biossalina não afetou a emergência nem o estabelecimento das plântulas até os 14 dias após a semeadura, período recomendado para o transplantio; entretanto, a utilização de água biossalina afetou o desenvolvimento de mudas com maior período de exposição.

Physiological changes in seeds and seedlings of pumpkins submitted to salt stress

“…Similar to the results in this study, a reduction in osmotic potential of the substrate caused by NaCl solution impaired seed germination and development of seedlings in other cucurbits such as watermelon (TORRES, 2007;SILVA et al, 2015), melon (ARAGÃO et al, 2009;SECCO, 2010), and cucumber (MATIAS et al, 2015). Average germination time (AGT), average germination speed (AGS) and germination speed index (GSI) all indicate the speed of germination of seeds and showed similar results ( Figure 2).…”

Phytohormones on the germination and initial growth of pumpkin seedlings under different types of water

“…Results similar to that found in this study were obtained in Cucurbita moschata seedlings from the use of 30 mg L -1 salicylic acid (Rafique et al, 2011). However, Silva et al (2015) found that fish farming wastewater favored the length of Citrullus lanatus seedlings. This was not observed in the present study for the cv.…”

Initial development of watermelon in fuction of substrates and irrigation with saline water

“…Quetzale grown under different electrical conductivy of irrigation water, could verify that the accumulation of mass at 44 days after sowing (DAS) was not affected by salinity between 0.6 and 3.98 dS m -1 . While Silva et al (2017) [23] observed a decreasing for fresh mass accumulation of the shoot when increasing salinity levels in 'Crimson Sweet' watermelon. In this sense, it is noted that the tolerance of the species to the salinity varies according to the cultivar [24] and time of exposure to this condition [23].…”