Use of Gypsum and Sulphur for Improving Rock P Efficiency and Their Effect on Wheat Productivity and Soil Properties

Abstract

Two field experiments were conducted in the Experimental Farm of Sids, Agricultural Research Station, ARC, Beni-Suef Governorate, Egypt on wheat (Triticum aestivum L.) to evaluate the effect of gypsum (0.0, 2.5 and 5.0 ton/fed) and sulphur (0.0, 200 and 300 kg/fed) on the efficiency of natural rock P at rate of (0.0 and 400 kg/fed), under the slightly alkaline soil and their effect on wheat productivity and some soil properties and fertility after wheat harvest. The results show that added 400kg rock P increased wheat growth (plant height and dry weight/plant), yield components (number of spikes/m 2 , number of grains/spike and 1000-grain weight), yields (grain and straw), nutrients uptake (N, P and K uptake in grains and/or straw) and soil available P after harvest. Increasing gypsum levels improved all studied growth parameters, yields and yield components, nutrients uptake as well as improved soil reaction , salinity and soil available P after harvest . Sulphur application increased plant height, dry weight/plant, number of spikes/m 2 , nutrient uptake, soil reaction and soil available P. Mixed gypsum or sulphur with natural rock P enhanced its effect on increasing wheat productivity and some soil properties and phosphorus availability after wheat harvest. The treatment of 400 kg rock P + 5.0 t/fed gypsum seems to be the favorable treatment for maximizing the wheat productivity and enhancing soil properties.

Improving Salt-Affected Soils for Enhanced Fodder Beet Productivity: Effects of Soil Conditioners and Tillage Techniques

“…The promotive effect of these conditioners on nutrient uptake may be due to their positive effect on soil properties and fodder beet yield as discussed before. These findings are in line with those obtained by Genedy et al, (2018) andEl-Sheref et al, (2019). The results of the interaction reveal that nutrients uptake were significantly affected by the interaction between tillage and soil conditioners.…”

“…Moreover, mentioned that the positive effect on soil organic matter may be due to soil conditioners improved soil properties, which in turn enhanced root growth, resulted to increased residues. These results are in harmony with those obtained by Sarwar et al, (2011) andEl-Sheref et al, (2019). With regard to the interaction effect, the data show that soil chemical properties after fodder beet harvest were significantly responded to the interaction between the tillage system and soil conditioners.…”

Improving Salt-Affected Soils and Productivity of Alfalfa by Using some Soil Conditioners and Subsoiling Tillage

“…The superiority of filter mud on constituent contents in alfalfa shoots may be attributed to its effect on increasing shoots dry weight of alfalfa as mentioned before. The results are in line with those obtained by Genedy et al, (2018) and El-Sheref et al, (2019). With regard to the interaction effect, the data clearly show that protein percentage and N, P and K uptake in alfalfa shoots were significantly affected by the interaction between the tillage system and soil conditioners.…”

“…In addition, Taha and Abd Elhamed, (2021) stated that the improvement in pH, EC and ESP due to soil conditioners led to increased root growth, consequently increased soil organic matter. Similar results were obtained by Sarwar et al, (2011) and El-Sheref et al, (2019).…”