Yield and Nutrient Concentrations of Wheat Plants as Affected by the Interaction between Organic Manuers , Phosphorus and Potassium Fertilizers

Abstract

During the winter seasons of 2015/2016 and 2016/2017, at the Experimental Farm of the Faculty of Agriculture, Mansoura University, Egypt, a pot experiment was laid out in a clayey soil, to study the effects of organic manure, chemical fertilization levels as (phosphorus and potassium) and their interactions on yield and yield component and chemical composition, of wheat (Triticum aestivum L.) plants. Twenty seven treatments were arranged in a split-split plot design with three replicates, which were the simple combination of three treatments of organic manures (control, rice straw compost and chicken manure) as main plots, three rates of phosphorus fertilization (0, 50 and 100% of the RD.) as sub plots and three rates of potassium fertilization (0, 50 and 100% of the RD.) as sub sub plots. Thus, the total number of the experimental pots was 81 pots. The application of rice straw compost and chicken manure significantly increased the mean values of grains per spike, spike length (cm), weight of 1000 grains, as well as grain and straw yields (g pot-1) of wheat plants as compared with the control treatment. On other words; rice straw compost was the most effective treatment in improving quantitative yield and nutrient concentrations. Application of phosphorus fertilization significantly increased all parameters under study for the plants treated with both rates over that obtained from the untreated plants. In this respect; the highest values were realized from the treatment of 100% P-fertilization.Adding potassium fertilization at 100% of the recommended dose to wheat plants achieved the highest values for all traits as compared to the untreated plants.The obtained results revealed that the integrated treatment of rice straw compost + 100% P and K fertilizations produced the highest values of yield and its components of wheat plants throughout all growth stages during both seasons. N, P and K concentrations in the dry matter of wheat plants were also improved due.

The Co-Addition of Soil Organic Amendments and Natural Bio-Stimulants Improves the Production and Defenses of the Wheat Plant Grown under the Dual stress of Salinity and Alkalinity

“…Othman (2021) assessed the influence of plant compost and animal compost on the saline soil characteristics after barley harvest and found that both plant compost and animal compost positively affected soil available nutrients (N, P and K) compared to control treatment. El-Hamdi et al (2019) illustrated that the application of chicken manure significantly increased the values of wheat grains per spike, spike length (cm), weight of 1000 grains, grain and straw yields (g pot -1 ) over control treatment. Some papers presented the protective ways from soil salinity stress including papers discussed the usage of stimulants e.g., natural herbal extracts and humate potassium, which causes increase tolerance of plants to salinity stress (Ghasemzadeh et al, 2012;Kandil et al, 2016;Soliman et al, 2019 andElrys et al, 2020).…”