The effects of drip irrigation on flowering and flower quality of glasshouse gladiolus plant

Applying wood ash and soil moisture on gladiolus (Gladiolus grandiflorus) cultivation

“…Basing on flower numbers, and according to the commercial classification of gladiolus flower stems (Table 3), the wood ash dose of 11.64 g dm -3 and 32.71% volumetric soil moisture would be appropriate for production of flower stems classified as II; considering commercial economic values, such category would still generate a satisfactory income to the producer. Greater flower numbers obtained with increasing water levels was also observed by Bastug et al (2006), that working with three irrigation treatments (0, 50, 75, and 100% evapotranspiration), reported a higher flowering percentage obtained when plants were cultivated under 86.2% water replacement level, followed by 75.2% and 58.1% levels. As Taiz and Zeiger (2006) reported, variations in water availability to a crop is subjective and may influence the physiological responses of the plant, since in water stress conditions (scarcity or excess), various physiological processes are changed, such as photosynthesis, stomatal opening, production of abscisic acid, leaf abscission and osmotic adjustment, thus dramatically reducing the productivity of ornamental plants.…”

Management of corm size and soil water content for gladiolus flower production

“…Furthermore, Bastug et al (2006) reported that every millimeter of water increases gladiolus flowering percentage at around 0.3% according to irrigation treatments and varieties. However, the highest moisture (125% FC) tested in this study promoted the lowest results for all flowering variables, with the exception of dry matter of flower stems.…”

“…In addition, Wright and Burge (2000) observed that symptoms of water stress include lower growth, what is much apparent in this study. Furthermore, Shillo and Halevy (1976b), Bastug et al (2006), andPereira et al (2009) mentioned that gladiolus vegetative development and flower stem initial growth are the most sensitive stages to soil water shortage. In fact, water deficit permanently affected plant development as, although plants remained alive, such treatment did not promote any flowering, as also reported by Shillo and Halevy (1976a) for gladioli cultivated under low soil moisture.…”

“…Number of flower stems, for instance, was 67.3% lower than the best result obtained under 80% FC (1.08 flower stem per corm). Therefore, there is a water supply limitation for gladiolus growth and development as, according to Bastug et al (2006), the irrigation water applied affected all characteristics of flowering and flower quality. On the other hand, for calla (Zantedeschia sp.…”

Estimation of Crop Coefficient and Water Requirement of Dutch Roses (Rosa hybrida) under Greenhouse and Open Field Conditions

“…Several studies on estimation of water requirement and crop coefficient have been conducted for open field crops like Cotton (Abdelhadi et al [9] Fisher [10]), Maize (Akinmutimi, [11] Chuanyan and Zhongren [12]), Onion and Spinach (Piccinni et al [13]) Okra (Odofin et al [14] Tiwari et al [3]), Capsicum (Miranda et al [15] Tyagi et al [17] Teff (Araya et al [18]), Sapota (Tiwari et al [4]), Jujube (Hu et al [19]), Pomegranate (Parvizi et al [20]) and greenhouse crops like Tomato (Maldonado et al [21] Gómez et al [22], Wahb-Allah et al [23] Harmanto et al [24]), Eggplant Senyigit et al [25] Melon, Green beans, Watermelon and Pepper (Orgaz et al [26]), Gladiolus (Bastug et al [27]), Cucumber (Zhang et al [28] and Blanco and Folegatti [29]) However, limited studies are found on cultivation of rose crop under greenhouse conditions (Ehret et al [30] Katsoulas et al [31]) and no literature is reported for the estimation of water requirement and crop coefficient of Dutch roses under greenhouse conditions. Therefore, the present study have been undertaken to determine the crop coefficient and water requirement of Dutch rose under greenhouse and open field conditions.…”