Two field experiments were conducted to enhance the efficiency use of rock phosphate, (RP) in a saline soil at El-Qantra Sharq, Ismailia Governorate, Egypt during the two successive summer seasons of 2011 and 2012. The rock phosphate (RP) was used as an environmental friendly alternative for P mineral fertilizers after alleviating the adverse effects of salt stress on soil and plant by applying compost, (CO) and the phosphate dissolving bacteria, (PDB) Bacillus megaterium var. phosphaticum, whether solely or in combinations with the rock phosphate. The effects of RP, compost and biofertilization applied solely or in combinations on maize grains yield and its quality as well as the macronutrients N, P and K and micronutrients Fe, Mn and Zn contents and uptake values were studied. RP was added at three rates RP0, RP1 and RP2 corresponding to 0, 31 and 47 kg P ha-1. The obtained results could be summarized as follows: the values of weight of grains plant-1 , 100-grain weight and grains yield significantly increased due to the different treatments relative to the control. The highest values of weight of grains plant-1 and grains yield (518g and 2.81 Mg ha-1), respectively were attained due to application of RP2 + compost. While, the highest one for 100-grain weight i.e. 58.9 g was achieved due to the treatment RP1+ compost, Uptake values of N, P and K as well as Fe, Mn and Zn by maize grains increased significantly as a result of addition of the treatments solely or in combination with rock phosphate. The highest uptake values of N, P, K as well as Mn and Zn i.e.168, 41.0, 141 kg ha-1 as well as 547 and 401 g ha-1 , respectively) were obtained due to addition of RP2 + compost treatment, while the highest Feuptake value (1036 g ha-1) resulted owing to the compost treatment. Soil available N, P and K as well as DTPA extractable Fe, Mn and Zn increased while, soil pH and soil ECe decreased as a result of compost and bio treatments added solely or in combinations with rock phosphate. Phosphorus use efficiency, PUE, apparent phosphorus recovery, APR and phosphorus agronomic efficiency PAE decreased as rock phosphate rate increased especially when combined with compost. The treatment RP 47 kg P ha-1 + compost was superior to the other treatments but statistically there were no significant difference with the treatment RP 31 kg P ha-1 + compost for more characters under study.
Two field experiments were conducted at Sahl El-Tina at North Sinai Governorate in private farm in two successive summer seasons of 2009-2010. The study was conducted to check up the effect of applying gypsum, sulphur and compost on availability of nutrients in soil and sesame productivity grown under saline soil condition. The seeds of sesame were Cv. (Shandawil 3). Application rates for gypsum and compost were 0, 2 and 4 Mg fed-1 but it was 0, 0.2 and 0.4 Mg fed-1 for sulphur. Addition was performed 30 days before sowing. Basial fertilizers were applied at the recommended doses ; and were applied in 3 successive doses. The results showed that the application of high rate of all amendments led to decrease EC and soil pH. Available macro and micronutrients in soil were elevated with increasing the rate of application of gypsum, compost and sulphur. Compost treatment at 4 Mg fed-1 gave the highest seed yield and oil contents of sesame; compared to the zero level of amendments. Elevating the application rates of the studied treatments heightened the uptake of macro and micronutrients in the seed of sesame. Again compost treatment superimposed the other studied treatments. Consequently,it may be recommended to utilize 4Mg fed-1 of compost to have good and higher quality of sesame yield grown on salt affected soil.
<p>Bio-farming is an eco-friendly advance that minimizes the required chemical additives for optimizing the quality of crops that their storage is often accompanied by seeds’ components degradation. Magnetic treatment of seed was considered as a promising tool improves germination and growth. This study aims to evaluate the effect of individual and combined application of bio-fertilizers and the N-P-K mineral fertilizers preceded by magnetic treatment of dry and/or water-soaked seeds before sowing on the yield and quality of soybean cultivated in a saline soil.The field experiment was carried out in a split-split plot design with triplicates. The main two factors (F1) were not bio-fertilized and bio-fertilized plots. The sub-factors (F2) were three application rates (A: 50%, B: 75%, and C: 100%) of recommended doses of the three N, P, K fertilizers. The sub-sub factors (F3) were seeds not magnetically treated (NM) and magnetically treated (M). All factors were studied for dry soybean seeds (without soaking) and soaked seeds in magnetically treated water. After harvesting, soil and plant samples were analyzed. The most significant increase in the soybean seed yield (kg ha<sup>-1</sup>) was by 49.98% for the bio-fertilized magnetized dry seeds at 75% and 100% mineral N-P-K fertilization compared with the NM soaked seeds at 50% N-P-K (A rate) without bio-fertilization. The 75% mineral fertilization significantly increased the protein (%) by 41.69% and decreased the proline (mg g<sup>-1</sup>dw) by 46.68%. Magnetic treatment of seeds before cultivation and combined bio/mineral N-P-K fertilization reduced the Proline that alleviats the stress conditions.</p>
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.