Effectof organic source of nutrient on yield of turmeric (curcuma longa l.) and biological properties of soil

Turmeric is one of the most important ancient spices of India and a traditional item of export, which is used daily by all classes of people for preparation of tasty curried dishes and as an ingredient of medicinal preparations. So, in this respect a field experiments were carried out be Influence of different source of nutrient on soil fertility and yield and quality of turmeric (Curcuma Longa L.), on college agriculture farm by 10 treatments and three replications with RBD. Application of different treatments of plant height (cm), Pseudo stem girth (cm), (68.47 to 94.00 cm, 7.27 to 11.00 cm) T1 (FYM @ 40 t ha⁻¹) as compared in T10 (Wheat straw @ 40 t ha⁻¹), T3 (Compost @ 40 t ha⁻¹), while in T8 (Flower waste @ 60 t ha⁻¹). The greater soil pH varied from 7.58 to 5.62 in T1 and T8 with the different organic manure treatments. A small variation to decreased in pH occurred with FYM at 40 t ha⁻¹ in T8. The EC measured across different organic manure treatments ranged from 0.815 dSm⁻¹ in treatment T1 to 0.961 dSm⁻¹ in treatment T7. Bulk density 1.24 and 1.32 Mg m⁻³. T2 (FYM @ 60 t ha⁻¹) had the highest bulk density (1.32 Mg m⁻³), whereas FYM @ 40 t ha⁻¹ had the lowest (1.24 Mg m⁻³). The organic carbon highest (0.96%) under compost @ 100 t ha-1 (T4) and lowest (0.68%) under vermicompost @ 40 t ha-1 (T7). The PSB populations greatest number (19×10⁴ cfu g⁻¹) in T9 and T3. (flower waste @ 60 t ha-1), followed by T2 (FYM @ 60 t ha-1). Greater PSB activity is associated with larger amounts of organic matter and microbial substrates. The actinomycetes populations greater count, 17×10⁴ cfu g⁻¹, was in T8 (vermicompost @ 60 t ha-1). This was followed by T10 (wheat straw) and T7 (vermicompost @ 40 t ha-1) because of better organic content and aeration. The lowest count 3×10⁴ cfu g⁻¹ was in T5 (poultry manure). Total Bacterial population T₁ (FYM @ 40 t ha-1) recorded the greater number 135.67 × 10⁴ cfu g⁻¹, followed by T₉ (flower waste @ 60 t ha-1). Excessive T2 (FYM @60 t ha-1) lowered bacteria, possibly because of anaerobic conditions. The total Fungi population highest number (77 × 10⁴ cfu g⁻¹) occurred in T₁ (FYM @ 40 t ha-1), followed by T₅ (poultry manure) and T₄ (compost). Slight growth of fungi occurred in T₂, T₃, and T₉. Thus, organic manures play significant improvement in turmeric growth, soil properties and microbial population.