Pengaruh Pemberian Biochar Sekam Padi dan Molybdenum Terhadap Pertumbuhan dan Hasil Tanaman Kedelai (GlycineMax. L.Merill) Pada Ultisol

Abstract

Soybeans are a very important food crop commodity because they are the main source of vegetable protein. In jambi province, the ultisol soil type is dominated. Ultisols has the potential to be used as agricultural land. Improving proper soil conditions such as ultisols can be done by adding natural ingridients such as biuochar. Molybdenum plays a role in activating the nitrogenase enzyme to form root nodules in legume plants. The aim of thisn research to concentrate on the impact of biochar and Mo components on the devolment and yield of soybean plant in ultisols. This research was carried out at the Teaching and research farm, faculty of agriculture, jambi university for approximately 4 month starting fromseptember to december 2022. This research used a randomized block design (RAK) with a factorial pattern consisting of 2 factors, namely rice husk biochar and Molybdenum. Factor I biochar ( B) which consists of three dose levels, namely without biochar as a control (b0), biochar 6 (b1), biochar 12 (b2), Factor II Molybdenum consists of three dose levels, namely without molybdenum as a control (m0), 75 (m1), and 150 (m2). Thus three are 9 treatment combinationts. Each treatment was repeated 3 times that there were 27 exxperiental plots. The variables observed were plant height, leaf area, total dry weight, number of roor nodules, number of branches, number of pods, weight of 100 dry seeds, number of seeds per plant. To detemine the effect of treatment, statistical analisys was carried out using ANOVA, if the treatment shows a real difference to the observed variables, it is continued with the DMRT at the α = 5% levels. The results of the research show that each treatment has a single factor effect on the observed variables. In this study, there was no interraction between rich husk biochar and molybdenum on all the variables observed, but asw a single factor, rice husk biochar influenced the height and leaf area variables. Meanwhile, molybdenum effects leafarea, total dry weight, number of root nodules, number of pods, and weight poer plant. The rice husk biochar provided in this tusdy was not able to increase the Mo element in the soil, as well as nitrate reductas activity.