INTEGRATED EFFECT OF MINERAL NITROGEN AND BIOFERTILIZER ON THREE SWEET SORGHUM VARIETIES PLANT (Sorghum bicolor L. Moench).

Abstract

Two field experiments were conducted during 2013 and 2014 growing seasons at Nubaria Region, Alexandria Governorate, Egypt in order to study the integrated effect of mineral nitrogen and biofertilizer (85 kg N/fed as recommended dose (control), 65 kg N/fed + 066 g Cerealin as biofertilizer and 45 kg N/fed + 066 g Cerealin) on three sweet sorghum varieties i.e., Sorgo, Brandes and Planter. Results showed that Planter variety recorded the highest values of morphological characters i.e. stalk height, stalk diameter, leaf area, stripped, and juice yields as well as chlorophyll a and b concentrations compared with Sorgo and Brandes in both seasons. On the other hand, in both seasons syrup yield was significantly increased in Brands variety compared with other two varieties. In both seasons Planter variety gave the highest values of physiological characters i.e., sucrose%, pH value, total soluble solids%, purity% and extracted juice%, while, Sorgo variety recorded the highest value in reducing sugar. The treatment of 65 kg N/fed + 066 g Cerealin gave the greatest concentrations of chlorophyll a and b in both seasons also gave the greatest values of stalk height, diameter and leaf area in the first season only, while, stripped stalks and juice yields recorded the highest values in both seasons. In the first season there was no significant difference in juice yield at the rate of 85 kg N/fed compared with 65 kg N/fed 066 g Cerealin, while, in the second season both treatments did not significantly differed in stripped stalks yield. Nitrogete fertilizer at rate of 65 kg N/fed + 600 g Cerealin gave the highest values of sucrose%, purity% and juice extraction% in both seasons. The interactions between Planter variety and 65 kg N/fed + 066 g Cerealin gave the greatest values in stripped stalks, juice and syrup yields followed by Brandes and Sorgo in both seasons.

The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants

“…Applications of PGPB significantly improve plant growth and production according to their role as biofertilizers [126]. The role of PGPB as biofertilizers was reported in several plants, including sugar beet [25,144,145] and sorghum [146]. Biofertilizers led to improved morphological, physiological and yield characteristics of sugar beet plants.…”

Bacillus thuringiensis and Silicon Modulate Antioxidant Metabolism and Improve the Physiological Traits to Confer Salt Tolerance in Lettuce

“…Plant growth-promoting rhizobacteria (PGPR) such as Rhizobium, Azotobacter, Bacillus, and Serratia can be used to increase plant yield under stress and normal conditions by the production of vitamins, antioxidants, and many phytohormones [44,45]. PGPR led to improved sweet pepper growth characters and fruit yield under salinity stress [6], additionally, PGPR can use as biofertilizer [46][47][48][49] and as a biocontrol agent [50]. Application of PGPR can alleviate the damaging impacts of stress and improve the yield production under stress conditions [51].…”

Seed Priming Boost Adaptation in Pea Plants under Drought Stress

“…Application of plant growth-promoting bacteria (PGPB) such as Azotobacter, Bacillus and Rhizobium may be used to improve the yield not only under normal, but also under stress conditions [ 31 , 32 ] by the production of antioxidants, phytohormones and vitamins. Plant growth-promoting bacteria can be used in biofertilization [ 33 , 34 , 35 ] and as a biocontrol agent [ 36 ] to improve the yield production of crops under various conditions. Moreover, silicon can increase the growth and productivity of many plants; it is a significant element and leads to increase the growth and yield characters, mainly under stress factors [ 31 , 37 ].…”