Impact of Different Sources of Natural, Mineral and Bio-Fertilizers on Apple Trees Performance, Growth And Yield on Sandy Soil

Abstract

T HIS study was carried out during two successive seasons 2014 and 2015 on 8-year-old "Anna" apple trees budded on Balady rootstock and planted at 4 x 4 m apart on sandy soil at South El-Tahrir in a private farm under drip irrigation system. Addition of natural elements compound (NEC) as soil application beside other biofertilizers extract was investigated as compared with the mineral fertilization. Biofertilizers markedly affected soil organic matter, pH and E.C. as their values changed with Azolla, Cyanobacteria individually and/or in combination. The higher increases in nitrogen, phosphorous, potassium and magnesium content in apple leaves nutrients were observed with the treatment (Azolla + Cyanobacteria and natural elements). Biofertilizer extracts alone or in combination with (NEC) increased leaf area, leaf fresh weight, total leaf chlorophyll content, fruit set %, and yield. Foliar application of Cyanobacteria reduced fruit drop than foliated by Azolla in the two seasons. Treating trees by a combination of biofertilizer and NEC resulted in the highest fruit firmness, TSS %, vitamin C and total fruit sugar as compared with the other treatments. During cold storage, results showed, that the least weight loss percentage was recorded by NEC + Cyanobacteria and Azolla treatment in the two seasons. While the highest acidity % was recorded by the control and NEC treatments. Generally, application of biofertilizers extract (Azolla, Cyanobacteria and their mixture) with natural element compound (NEC) improved growth, yield and fruit quality at harvest and after storability process. In addition, the increase in microbial activity in the soil may reduce additions of inorganic fertilizers.

Effect of organic and bio fertilization and magnesium foliar application on soybean production

“…The superiority ofplant compost compared to FYMfor all the studied agro parameters may be due to that the residues of the sugar cane and banana tree contain more nutrients (especially potassium as shown it Table 1), vitamins and hormones than FYM (Kravchenko et al 2013;Taha et al 2018).It is known that potassium plays a major role in enhances carbohydrates' movement from foliage to storage organs.T 2 treatment (rhizobium alone) only outperformed the control treatment T 1 treatment (without addition) due to its ability in N fixation. Besides its ability in N-fixation, perhaps the superiority of rhizobium is due to its ability to secrete polysaccharides (slime), which help bind soil particles to each other(Baddouret al The obtained results also help in understanding the vital role of magnesium element in improving plant growth of soybean and quantitative and qualitative yield.…”

“…Bio-fertilization and an integrated supply of nutrients via organic sources for oil crops e.g., soybean could be an effective practice to raise soybean productivity (Mekki and Bio-fertilizers, which areknown as microbial inoculants, are preparations that contain cells of microorganisms (either live or latent) of highly efficient strains in nitrogen fixation or solubility of soil phosphorus and potassium. Bio-fertilizers areadded either with the seeds or to the soil in order to increase the number of microorganisms and accelerate certain microbial processes that increase the availability of nutrients to plants (Mahdi et al 2010;Taha et al 2018;Kumar et al 2018). Rhizobium inoculants have ability to atmospheric nitrogen fixation (symbiotic) in nodules found on the roots of the legumes (Baddouret al…”

Uses of Plant Growth Regulators and Biofertilizers in Fruit Crops: A Review

“…The increase in the percentage of fruit set, fruit yield, weight of fresh leaf, total chlorophyll content of the leaf in 'Anna' apple tree with the application of extracts of Biofertilizer (Azolla, cynobacteria and their mixture) alone and in combination [76]. In the study of Thomas et al [77] founded that the application of Biostimulants in the combination with AM fungi and PGPR (@ 200gm/ nursery bed + 20g + 50ml per plant respectively) increases scion's radical growth, success rate, total length of the root, shoot's fresh weight and dry weight, total biomass of the apple plant in the nursery.…”

A study of quinclorac degradation during thermal and forced hydrolysis and soil photolysis

“…These nutrients directly improve crop yields and resistance to biotic and abiotic stressors (Elramady et al, 2021) therefore the current research study the fate of quinclorac in caly soil. Furthermore, increased microbial activity in the soil may lower the need for inorganic fertilizer applications (Taha et al, 2018). The objective of this study is to investigate the fate of quinclorac during forced thermal, acidic and alkaline hydrolysis as well as its photolysis in Egyptian clay-loam soil.…”