Journal of Biology, Agriculture and Healthcare www.iiste.org ISSN 2224-3208 (Paper) ISSN 2225-093X (Online) Vol.5, No.14, 2015 1 Increasing the Production of Soybean (Glycine Max L.) By Using Mulch of Rice Straw and Appliying Poc (Liquid Organic Fertilizer) From Seaweed (Gracilaria Sp.) and Cattle’s Urine Wakifatul Hisani 1* , Kaimuddin 2 , Syamsuddin Garantjang 3 1, Student of Master Program of Agriculture System, Hasanuddin University, Makassar,Indonesia 2, Lecturer of Master Program of Agriculture System, Hasanuddin University, Makassar, Indonesia 3, Lecturer of Animal Husbandry Faculty, Hasanuddin University, Makassar, Indonesia. Abstract Soybean is the crops that are important in the food and feed industry. It acts as a source of vegetable protein thatis very important in improving people's nutrition because it is safe for health and cheaper. This study aimed to assess the effect of combined treatment of liquid organic fertilizer from waste of seaweed and urine of cattle and supplementing rice straw mulch with different dose to the growth and production of soybean of Wili variety. This study was conducted in November 2014 until March 2015 in the Dusun Kajuara, Awangcenrana Village, District Cenrana, Bone regency. This study was prepared by using the Separated Plots Draft (RPT). The main plot is the use of rice straw mulch with four treatments, ie: without the straw, straw mulch 2 tons / ha, straw mulch 4 ton / ha, and straw mulch 6 tonnes / ha. The subplots were fertilization with four treatments, ie: without POC, Seaweed POC, cow urine POC, and the combination of seaweed POC and cow urine POC. The results showed that the combination of supplementing rice straw mulch and POC from waste seaweed and cow urine occured real interaction to the weight of berangkasan, number of empty pods, soy production per plot, productionton.ha-1. The combination of supplementing rice straw mulch and POC from waste seaweed and cow urine showed the best response because it is capable of producing (2.6 ton / ha) is higher than the potential ability of the results (1.6 ton.ha). Keywords: soy, straw mulch, poc seaweed, cattle’s urine 1. Introduction Soybean is the third most important food crop after rice and corn. It is the legumes crops which contain many vegetable protein, carbohydrates and fat. Soybeans also contain phosphorus, iron, calcium, vitamin B with a complete amino acid composition, therefore, it is the potential for growth of the human body (Pringgohandoko and Padmini, 1999). Soybeans also contain unsaturated acids that can prevent the rise of arterial sclerosis, that is the hardening of the arteries (Taufiq and Novo, 2004). Soy acts as a source of vegetable protein that is very important in order to improve people's nutrition because it is safe for health and cheaper. Soybean demand increase continuesly in line with population growth and the needs of industrial materials for processed food such as tofu, tempe, soy sauce, soy milk, tauco, snacks, etc. The efforts to increase the productivity of soybean plants is strongly influenced by the techniques of cultivation, pest control and fertilization that can be done through the roots and leaves. Fertilization through the leaves is done by spraying fertilizer in liquid form on the plants directly. This method is effective to provide the nutrients contained in the fertilizer, because fertilizer is easy to entry and it is also easy to be absorbed into the stomata. The results of study of the size of openingthe gap of soybean leaf stomata (Glycine max (L.) Merrill var. Lokon) in the morning, afternoon and evening, show that stomata opensmaximally in the morning. In the afternoon, stomata keep opening during the day but it is not the maximum, to reduce the occurrence of evaporation, while in the afternoon occurre stomata opening is greater than during the day (Meirina, 2006). Cow urine is one alternative to increase the availability, adequacy, and efficiency of nutrient absorption for plants that contain microorganisms that can reduce the use of inorganic fertilizers (N, P, K) and increase crop yields maximally (Dharmayanti, et al., 2013). Seaweed is one of the living marine resources of commercial renewable. Since the long time, macroscopic marine algae has had a close relationship with human life and has been used deeply in a variety of ways as a source of food, feed, pharmaceuticals, fertilizers, and especially for phycocolloid that is economically valuable (Lakshmi et al., 2010). In agriculture, seaweed used as animal feed, soil fertilizer and compost in extract liquid form, as a substance of growth stimulator and plant protector in facing pests and diseases (Verkleij, 1992). Liquid organic fertilizer provides several advantages, such as fertilizer can be used bywatering it to the root or spraying onto plants and save energy. So that the process of watering can maintain soil moisture. Liquid organic fertilizer in fertilization can be done more evenly, there will be no cumulation of concentration fertilizer in one place, this is due to liquid organic fertilizers 100% soluble. (Priangga, et al., 2013). At the time of spraying a liquid organic fertilizer, not all of the solution can be absorbed by plants.