Effect of Adding Humic, Fulvic and Eco-wrp Fertilizers Loaded with Nano NPK on NPK Availability in Leaves, Tubers and Total Plant Yield of Potato Plant (Solanum tuberosum L.)

Abstract

A factorial experiment was conducted during the autumn agricultural season 2023-2024 in one of the fields of Bani Saad district / Diyala Governorate in a sandy mixture soil (Loomy). The experiment included two factors: The first factor is adding humic acid fertilizer and fulvic acid fertilizer at three levels, which are (0 comparison treatment 5 gm per plant humic fertilizer, 2 gm per plant fulvic fertilizer) and is symbolized as follows (M₀, M₁, M₂) respectively. The second factor is adding Eco-Wrp loaded with nano NPK at five levels, which are  (0 comparison treatment, 10 kg per hectare Eco-Wrp only, 10 kg per hectare Eco-Wrp + 2 gm per square meter of nano NPK of soil area, 10 kg per hectare Eco-Wrp + 4 gm per square meter of nano NPK of soil area, 2 gm per square meter of nano NPK of soil area) and is symbolized as follows ( E₀,E₁,E₂,E₃,E₄) respectively and the addition was made (soil addition at the beginning of the planting season) and the aim of the study is to study the effect of adding humic fertilizer, fulvic fertilizer and Eco-wrp loaded with nano NPK on the readiness of NPK and organic matter in the soil. The experiment included 15 treatments resulting from the compatibility between the study factors mentioned above, and a factorial experiment was applied and the experiment included two factors within the Randomized Complete Block Design (RCBD) and with three replicates, and the differences between the averages were found))Randomized Complete Block Design (( using Duncan's multinomial test and the specialist analysis was using the (SAS) program, and the averages were compared  using Duncan's multiple range test and under 5% probability level, the results showed the following:   The addition of  5 gm of humic acid fertilizer per plant + the addition of 10 kg ha^-1  Eco-Wrp + 4 gm per square meter of nano NPK of soil area was superior in the concentration of available nitrogen in leaves and tubers and the total plant yield and available phosphorus in tubers which is M₁ E₃, and the addition of 2 gm of fulvic acid fertilizer per plant + the addition of 2 g per square meter of nano NPK only was superior inThe soil area in the concentration of potassium in the leaves is M₂ E₄, and the addition of  5 gm of humic acid fertilizer per plant + the addition of 2 g per square meter of nano NPK only exceeds the soil area in the concentration of potassium in the tubers is M₁ E₄, and the addition of 5 gm of humic acid fertilizer per plant + the addition of 10 kg ha^-1`  Eco-Wrp only exceeds the concentration of phosphorus in the leaves is M₁ E₂ .