The Effects of Indigenous Microorganism (IMO) from Cow Feces Application on Nutrition Content of Brown Midrib Sorghum (<i>Sorghum bicolor</i> L. Moench)

Abstract This research aimed to observe the effect of Indigenous Microorganism (IMO) cow feces as biofertilizer on the nutritional content of brown midrib mutant sorghum (Sorghum bicolor L. Moench). The study was conducted at the Edufarm field of the Faculty of Animal Science, Universitas Andalas. The Randomized Group Design (RGD) trial employed four treatments and four repetitions. The treatments consisted of P1 = without fertilizer (Negative control), P2= 100% NPK recommended dose (Positive control), P3= 50% NPK recommended dose + IMO 20 ml/planting hole, and P4= IMO 20 ml/planting hole. The parameters measured were plant growth rate, whole plant production, nutrition, lignin and silica content. The results showed that P2 produces the highest plant growth rate than other treatments. P2, P3, P1, and P4 plant heights are 260, 256, 242, and 237 cm, respectively. The production of whole plant and nutrient content does not significantly affect all treatments (P&gt;0.05) except lignin. The lowest lignin content was found in the treatment of 100% recommended NPK dose of 2.64%. The study concluded that different NPK fertilizer doses and IMO did not affect plant growth, production, or nutrition except lignin content.