This study was conducted in styrofoam trays placed on an aerated nutrient solution in vats in order to determine the effect of different nutrient solutions on rocket plant growth, yield and quality. Seeds of Bengi F1 rocket cultivar were sown into peat as inserting each seed to each hole (17 ccs) of trays with 210 cells (957 plant m-2). Following germination in the germination chamber, seedling trays were moved to a climate controlled greenhouse for adaptation. After emergence, the seedlings were transferred to water culture. The nutrient solution was applied as “full dose” (mg/L: N 150, P 50, K 150, Ca 150, Mg 50, Fe 5.0, Mn 0.50, Zn 0.05, B 0.50, Cu 0.03, Mo 0.02), “half dose” (macro elements reduced by 50%) and “without nutrients” (water). Cultivation was performed in 2 consecutive periods and in each period 3 harvests were done and quality analysis was done on the leaves from the first harvest. Results were given as the mean of two periods. Results showed that plant growth, yield and quality parameters vary depending on the concentration of the nutrient solution. It was observed that as the concentration of nutrient solution decreased, plant growth, biomass, yield values decreased, leaf color and total chlorophyll concentration did not change and while nitrate content decreased, vitamin C content increased. Leaf N, P, K and Fe element contents decreased with half dose, whereas Ca and Mg content did not change. However, there was no statistical difference between full dose and half dose treatments in many measured parameters. When all the data obtained from the study are evaluated together; it is suggested that rocket can be grown in a floating water culture and the dose of macro elements as reduced 50% can be preferred because it reduces the nitrate content, increases the vitamin C content and allows the use of less fertilizers without causing any significant reduction in yield compared with full dose.

In this study, a pot study was carried out to reveal the effects of direct and foliar applications of humic acid to the growing medium in addition to basic fertilization on the development and plant quality characteristics of lily plants grown in peat + perlite medium. The experiment was carried out in an unheated greenhouse during the summer, in a greenhouse environment with a shade net on it. In the experiment, in addition to the control, the humic acid doses were 3.5 lt/da from soil, 7.5 lt/da from soil, 1.75 lt/da from leaf, 3.75 lt/da from leaf and soil + 3.5 lt/da from leaf + 1, It was applied 3 times as 75 lt/da. In the pot experiment established in three replications according to the randomized plots trial design, 10 lily bulbs were planted in each pot and humic acid applications were made at two-week intervals following plant emergence. In order to see the effect of the applications when the plant is harvested, the length of the flower stem (mm), the thickness of the flower stem (mm), the fresh weight of the branch (mm), the number of buds (pieces), the bud length (cm), the number of leaves (pieces), Full bloom stem (mm) and vase life (days) were examined. As the doses of humic acid increased, the vegetative weight of the lily plant increased, while the effect of the applications on the investigated properties was different. With the mineral elements, hormones and plant growth regulators in humic acid, it has the feature of promoting the increase of biomass in the plant.

Bu çalışma torf perlit ortamında yetiştirilen Zambak bitkisinin gelişimi ve bitki kalite özellikleri üzerine temel gübrelemeye ek olarak humik asitin yetiştirme ortamına direk ve yapraktan uygulamalarının etkilerini ortaya koymak için saksı koşullarında yürütülmüştür. Deneme yaz döneminde üzerine gölge tülü çekilmiş ısıtmasız sera ortamında gerçekleşmiştir. Denemede humik asit dozları kontrole ek olarak topraktan 3,5 lt/da, toprak 7,5 lt/da, yapraktan 1,75 lt/da, yapraktan 3,75 lt/da ve toprak + yapraktan 3,5lt/da + 1,75 lt/da olarak 3 kere uygulama yapılmıştır. Tesadüf parselleri deneme desenine göre üç tekerrürlü olarak kurulan saksı denemesinde her saksıda 10 adet zambak soğanı dikimi yapılmış ve bitki çıkışını takiben humik asit uygulamaları iki hafta arayla yapılmıştır. Bitki hasada geldiğinde uygulamaların etkisini görebilmek için bitkinin çiçek sapı uzunluğu (mm), çiçek sapı kalınlığı (mm), dal yaş ağırlığı (mm), kandil sayısı (adet), kandil (gonca) uzunluğu (cm), yaprak sayısı (adet), tam açmış çiçek sapı (mm) ve vazo ömrüne (gün) bakılmıştır. Humik asitin dozları arttıkça zambak bitkisinin vegetatif ağırlığı artarken uygulamaların etkisi incelenen özelliklere etkisi farklı olmuştur. Humik asit içerisindeki mineral elementler, hormonlar ve bitki büyüme düzenleyicileri ile bitkide biomasın artışını teşvik etme niteliği taşımaktadır.