Effect of Nano-Fertilizer (Lithovit) and Potassium on Leaves Chemical Composition of Egyptian Cotton Under Different Planting Dates.

Abstract

Two field experiments were carried out at El-Gemmeiza Agricultural Research Station, El-Gharbia Governorate in 2014 and 2015 seasons, to study the effect of nano-fertilizer (Lithovit) rates (0, 2.5, 5 and 7.5 g/l) and foliar potassium fertilizer (in the form of Potasin-P) rates (2.5, 5 and 7.5 cm 3 /l) under three planting dates (8 April, 8 May and 8 June) on leaves chemical composition of the Egyptian cotton (Gossypium barbadense L.), cultivar Giza 86. Cotton plants were foliar sprayed with Lithovit and Potasin-P at 45 and 60; 46 and 61 days after planting, respectively. Leaves N, P, K, chlorophyll a, b, total chlorophyll, carotenoids and total carbohydrates contents were significantly affected by planting date in both seasons, in favour of early planting date (8 April) compared to medium and late planting dates (8 May and 8 June). Delaying planting date significantly increased leaf proline content and leaf peroxidase activity which indicate the presence of heat stress effect on the plant.Leaves N, chlorophyll a, b, total chlorophyll, carotenoids and total carbohydrates contents were significantly affected by rates of Potasin-P in both seasons, in favour of the medium rate of Potasin-P (5cm 3 /l). While, leaves P and K contents were significantly increased by using the high rate of Potasin-P (7.5cm 3 /l). The medium rate of Potasin-P (5cm 3 /l) significantly decreased leaf proline content and peroxidase activity which indicate favorable plant conditions.Leaves N, P, K, chlorophyll a, b, total chlorophyll, carotenoids and total carbohydrates contents were significantly increased by each increment of nano-fertilizer (Lithovit). The inverse was true in leaf proline content and peroxidase activity. The decrease in these traits induced favorable plant conditions and reflected on reduce environmental stress effect.The second order interaction had a significant effect on all studied chemical composition of leaves. Cotton plants sown on 8 April and sprayed with 5cm 3 Potasin-P /l and 7.5 g Lithovit/l recorded the highest values of N, P, K, chlorophyll a, b, total chlorophyll, carotenoids and total carbohydrates content in leaves. In the contrary, this interaction recorded the lowest values of leaf proline content and peroxidase activity which induced favorable plant conditions and reflect on reduce environmental stress effect. It can be concluded that the mentioned interaction was the recommended treatment for optimum chemical composition of cotton leaves under experimental conditions.

Yeast Extract and Lithovit Mineral Fertilizer Ameliorate the Harmful Effects of Drought Stress in Wheat

“…The recorded increase in reducing sugars, sucrose and starch in stressed plants treated with lithovit spray is analogous to the results of Abo-Sedera et al (2010), which may be due to that lithovit contains Mg, the prosthetic group of chlorophyll molecules and it is essential for the metabolism of carbohydrates, where it facilitates their translocation (Abo-Sedera et al, 2016;Attia et al, 2016). In addition, it contains P, as pyridoxal, is essential for the biosynthesis of chlorophyll and is also involved in the biosynthesis of phosphoglycric acid which plays an important role in CO 2 conversion to sugar; i.e.…”

“…This increase may be because it is taken up directly through the stomata and is converted into carbon dioxide leading to enhanced photosynthetic efficacy (Carmen et al, 2014). Lithovit contains an amount of micro-and macronutrients, like Mg and Fe; where Mg rapidly penetrates the leaves and plays an important role in chlorophyll biosynthesis and in the number of chloroplasts/cell which significantly increases the concentration of photosynthetic pigments (Attia et al, 2016). Moreover, Fe plays an important role in photosynthetic reactions, activates several enzymes and improves the performance of photosystems (Sheykhbaglou et al, 2010).…”

“…P decomposes carbohydrates produced in photosynthesis and leads to an increase in sugars. Lithovit also contains Ca which aids in carbohydrate translocation (Attia et al, 2016), and Zn which plays a crucial physiological role in enzymes and proteins involved in photosynthesis (Tsonev & Lidon, 2012). The increase in protein content due to lithovit sprays may be due to that it increased the synthesis of new proteins and/ or inhibition of proteolytic activities and RNase activities (Hassan et al, 2011).…”

Application of Jasmonic Acid and Lithovit to Overcome Adverse Effects of Drought Stress in Wheat

“…On the other hand, untreated plants scored the highest values of peroxidase, phenoloxidase and proline compared with those obtained from JA and Li combination rates. Similar results were obtained by Attia et al (2016).…”

“…Huang et al (2017) mentioned that JA have functions in a remarkable number of plant developmental events, including primary root growth and reproductive development. Moreover, Hamoda et al (2016) found that application of lithovit caused significant increases in plant growth parameters.…”