Impact of different organic fertilizers on soil available nutrient contents, potato yield, tuber nitrate contents

In this study, field experiment was conducted to assess the effect of different organic fertilizer and mineral on treatments available N, P, K contents, yield potato (Solanum tubevosum L.), cultivar Astana, nitrate contents tuber under dark chestnut soil conditions in southeast Kazakhstan during spring summer 2022. The carried out laid as complete randomized block design with four replicates. Thirteen that are, control without treatment, recommended dose (N150P90K120) eleven fertilizers treatment were used. results showed nutrient (N, P K) post-harvest affected by compared control. And, soils taken from biohumus (10 t ha-1) cattle manure (40 treated plots found be higher than all other Similarly, had a significantly When applications each other, it determined increased highest Biohumus + BioZZ (5 L ha-1, 3 times). content tubers obtained (N150P90K120). Hence, these suggest production (Biohumus, 10 ha-1 5 times) could an alternative conventional reduction yield, low high soil.