Effectiveness of Liquid Organic Fertilizer On N-Total of Soil, N, P, K Uptake, and Yields of Peanut (Arachis hypogaea L.) In Inceptisols Jatinangor

¹ Departmentt Soil Science and Land Resources, Faculty Agriculture, Padjadjaran University, Jatinangor, Indonesia
² Magister Student at Department Soil Science and Land Resources, Faculty Agriculture, Padjadjaran University, Jatinangor, Indonesia

^* Corresponding author: astri11001@mail.unpad.ac.id

Abstract

Inceptisols are often used for intensive cultivation and have low levels of essential nutrients. Improvement of this fertility rate can be achieved by the application of organic based fertilizers that can increase soil fertility. Peanut has long been cultivated in Indonesia and is generally grown on dry land. This research was conducted from February to June 2023, at the experimental garden, Padjadjaran University. This research aims to determine the effect of liquid organic fertilizer combined with standard NPK fertilizer on soil N total, plant nutrient uptake, and peanut yields in Inceptisol Jatinangor. This study used a randomized block design experimental method with nine treatments and three replications, and the amount is 27 experimental units. The result shows that the combination of liquid organic fertilizer with NPK fertilizer can enhance yields of peanuts. The combination of 10 liters of liquid organic fertilizer per hectare andb ¾ dose of Urea, TSP and KCl can increase the total-N content of the soil, the absorption of N, P, and K, as well as the weight of dried pods. Therefore, the use of liquid organic fertilizer in peanut cultivation can be reduced by up to 25% and can increase the yield of peanut pods.