Possibility of Using Clover Residues, Green Manures as a Partial Substitute of Mineral Nitrogen Fertilizer to Wheat Plants Grown on Normal and Saline Soils

Abstract

Reducing synthetic nitrogen fertilization is an important issue nowadays due to its environmental hazards and raising the soil quality. So a field trial was executed aiming to assess the possibility of using clover residuals and green manure as a partial substitute for mineral nitrogen fertilizer for wheat plants grown on normal and saline soils. The green manure, as the main factor, was Egyptian clover (variety FAHL), split-plot design with three replicates was used were the main treatments were as follows; M1: without green manure (soil without cultivation between rice and wheat), M2: tillage of clover roots alone with soil and M3: tillage the whole plant with soil. While, the sub-main factor consisted of three rates of mineral N fertilizers i.e., 100, 75, and 50 % of nitrogen recommended dose (NRD) for wheat as mineral fertilizer. Regarding the effect of green manure, the M3 treatment was superior compared to others. Concerning N treatments, 100% of NRD as mineral fertilizer was superior compared to other rates. On the other hand, in both soils (normal & saline) the wheat plants which received 75 % of NRD as mineral fertilizer and simultaneously fertilized with Egyptian clover as green manure (M3) realized performance and productivity as similar as the corresponding wheat plants which received 100 % of NRD as mineral fertilizer without green manure (M1) or in other words, there weren't significant between them for the most of studied parameters. The studied green manure increased nutrient uptake and enhanced the synthesis of chlorophyll in the tissues of the wheat plants grown in either non- saline or saline soils and this may be the reason for increasing the ability of wheat to tolerate salinity. Generally, it can be concluded that mineral N fertilizer rates could be reduced after the incorporation of Egyptian clover as green manures having high nutrient contents and increased nitrogen use efficiency in saline soil which increases wheat yield.

Impact of Organic Fertilization and some Beneficial Elements on the Performance and Storability of Salt-Stressed Crisphead Lettuce (Lactuca sativa L.)

“…Increasing salts in the soil may cause a significant decrease in cell division and elongation (Safdar et al, 2019). Increasing the content of Cl & Na ions in chloroplasts affects the synthesis and activity of enzymes associated with photosynthesis (Othman, 2021;El-Shamy et al, 2022 andGhazi et al, 2022).…”

“…Though soil salinity stress has an inhibitory effect on the vegetative growth of plants, the strategy of most countries is to reclaim and cultivate all degraded soils, including saltaffected soil to bridge the nutritional gap (Hamail et al, 2014;Shabana et al, 2020;El-Shamy et al, 2022 andGhazi et al, 2022). Most common treated method is the use of compost which possesses a vital influence in improving vegetable crops' nutritional components under salinity conditions (Othman, 2021).…”

Effects of Various Organic Fertilizer Sources and External Applications of Potassium Fulvate and Potassium Citrate on the Yield and Quality of Two Barley Varieties Grown under Salt Affected Soil

“…Barley (Hordeum vulgare L.), a staple cereal crop with considerable economic and nutritional value, is relatively salt-tolerant compared to other cereals, making it an ideal candidate for cultivation in saline environments (Abo El-Ezz et al 2020). The identification and utilization of barley varieties that exhibit enhanced resistance to salinity is vital for ensuring food security and maintaining agricultural productivity in affected areas (El-Hadidi et al 2020;El-Shamy et al 2022;Soudy et al 2024).…”

Impact of Different Mineral Nitrogen Levels, Zeolite Amendment and Potassium Silicate on Wheat Growth and Productivity

“…Wheat is a staple crop essential for global food security, necessitating optimized agricultural practices to ensure high yield and sustainability (El-Shamy et al 2022). Traditionally, achieving optimal wheat production has relied heavily on the application of mineral nitrogen fertilizers (El-Sherpiny and Faiyad, 2023;Gamal et al 2024).…”