This study aims to see the growth and productivity of soybeans in different agroecosystems. The study was conducted on paddy field located in Bumi Setia village, Seputih Mataram sub-district, Central Lampung district, and on dryland located in Mandah village, Natar sub-district, South Lampung district, Lampung Province, Indonesia, from April to July 2015. Soybean varieties grown at each location were Grobogan varieties. The variables observed were crop emergence, plant height at harvest, number of plant harvested, number of pods per plant, empty pods, weight of 100 grains, pod pests and productivity. Data were analyzed by t test. The resultsshowed that soybean productivity in dryland was 64.25% lower than productivity in paddy fields. The low yield of soybean varieties of Grobogan in dryland was caused due to drought factor when forming and filling pods. This can be seen from the decrease of weight of 100 grains of soybean seed in dryland up to 51.82% than in paddy field. The status of Grobogan varieties soybean vigor may change from large seed to medium seed if the water requirement is not optimum during the growing season.

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Azospirillum is one of the bacteria that can be used as biological fertilizer because the bacteria is known as a producer of PGPR (Plant Growth Promoting Rhizobacteria) which can increase crop production in a sustainable manner. Another potential possessed by Azospirillum is as a biocontrol agent for controlling plant pathogens. The application of Azosprillum in agriculture, especially food crops, is still very limited on a small scale. The purpose of this paper was a literature review that reviews the potential of Azospirillum as a biofertilizer and biocontrol of pathogens in food crops with a focus on its application and impact on the productivity sector. The methodology used a search for literature related to the topics listed in the search for current and relevant information about the use of bacteria of the genus Azospirillum in the cultivation of food crops. Among the studies, selected reports on the use of bacteria from the genus Azospirillum in food crops, which may contain results obtained in the field or in a controlled environment. The conclusion was that field inoculation has not been a major area of Azospirillum research at present, recent field and greenhouse experiments, especially in cereals and rice plant, have once again shown promising potential. The use of Azospirillum bacteria to improve the quality and quantity of food crop products and develop environmentally friendly practices is a reality. However, the development of research that determines the best strategy for the use of this technology in food crops should continue, aiming at the best conditions for producers.

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Efforts to increase soybean production require superior varieties which are stable in every agroecology production center. Therefore, it is necessary to perform field evaluation of several new released soybean varieties. The aim of this study was to evaluate the growth and yield potential of soybean varieties developed by Indonesian Legume and Tuber Crops Research Institute (ILETRI) Malang in a field experiment. Four soybean varieties (Devon 1, Dering 1, Gema and Gepak Kuning) were sown in Margodadi Village, Ambarawa Sub-district, Pringsewu Regency, Lampung Province, Indonesia from May to August 2017. Plots were arranged in randomized complete block design with six replicates. The variables observed were crop emergence at 7 DAS sowing, plant height and number of pods at harvest, pest attack on 1-month-old plants and at harvest, and seed yield. The results showed that Gepak Kuning gave the highest yield (2.13 t/ha), which indicated that this variety is suitable to be planted and developed in the location of the study.