Soybean and corn are strategic commodities to meet community needs. As the population increases, the demand for these commodities tends to increase. A breakthrough innovation is needed to increase food production. The purpose of this study was to determine the yield of several varieties of corn and soybean growth using the intercropping system on rainfed lowland areas. The study was conducted in Central Lampung during the 3rd planting season from September to December 2019. The soybean varieties are Anjasmoro, Dena, Devon and local existing. Corn varieties are Nasa-29 and local existing. The intercropping system used corn-soybean pattern 2-7. The study involved 5 farmer cooperators. The results of the study indicated that the intercropping system provide the highest production of soybean and corn for local and existing varieties. The average corn production was 9340 kg/ha and the average soybean production was 1971 kg/ha. The intercropping system provides an increase in the cropping index from 100-150 to 200-300 on rainfed lowland

The rice commodity is still the main foundation for national food security. Efforts are made to increase rice production to maintain food stability. Superior rice varieties are a solution to increase production. Swampland can be an alternative option for producing rice. This study aims to determine the test results of several rice varieties yield grown in swampland. The study was carried out in Rawa Selapan Village, Candipuro District, South Lampung Regency on 3rd planting season in 2018. The area for planting is 2 ha. Three high yielding rice varieties studied were Ciherang, Inpara-2, and Inpari-42 GSR. Paddy cultivation used rice paddy Integrated Crop Management (ICM) technology which spacing was 25 cm x 25 cm (according to local conditions). Plants are fertilized according to soil conditions where Urea was given 150 kg ha- 1, SP-36 100 kg ha-1, and KCl 75 kg ha-1. Rice harvest was done after 95% of panicles turn yellow. Observation variables include components of vegetative and generative growth. The results of the study showed that the new superior rice variety Inpari 42 GSR gave the highest production of 9796.11 kg ha-1 Harvested Dry Grain (HDG). The average yield of Ciherang variety was 7238.57 kg ha-1 HDG and Inpara-2 variety was 6074.29 kg ha-1 HDG. Grain water content conditions after harvest was 14-15%. Rice cultivation technology using new superior varieties of Inpari 42 GSR has high potential to be implemented and adapted in swampland where the land conditions are always inundated.

Lampung Province is one of the coffee-producing centers in Indonesia, especially robusta coffee. One of the coffee producing centers is in Air Naningan District, Tanggamus Regency. So far, most farmers manage conventional coffee plantations without any conservation nor fertilization. The study aimed to compare the performance of coffee growth between conservation and fertilization treatments with conventional treatments. Conservation treatment was carried out by making trenches around the coffee plantations. At the same time, fertilizer was given in the form of organic fertilizer as much as 10 kg plant−1 y−1, and inorganic fertilizer in the form of Rock Phosphate 240, Urea 400, and KCl 320 g plant−1 y−1. The study showed that the conservation and fertilization could improve the performance of coffee plants, based on the agronomic performances, such as a better growth (canopy and leafy branches, shiny green leaves, and low leaf rust disease (<5%) and stems and branches attacked (<5%). The yield of coffee was also increased by around 333%. The study indicates that the combination of land conservation and fertilization could be adopted as a standard procedure for increasing coffee production in Lampung Province.

Acid dry land is characterized as suboptimal land with low productivity. The “Turiman Jale 2-7” corn-soybean intercropping technology innovation has the potential to provide additional yields on acid dry land. The purpose of this study was to examine the yields of corn and soybeans grown using the “Turiman Jale 2-7” system on acid dry land. The assessment was carried out at the Tegineneng Experimental Garden, Mandah Village, Natar District, South Lampung Regency, Lampung Province. Methods with demonstration plots in the field of 0.75 ha, with 2 treatments using corn and soybean varieties. The research period was January to June 2020. The soybean varieties planted were Dega, Dena, Detam, Detap, Devon, and local Tanggamus. Corn varieties planted were Balitbangtan JH-37 and existing hybrid corn (Bisi-18, DK-771, NK-22. P-27). The corn-soybean intercropping system used a pattern of alternating 2 rows of corn and 7 rows of soybeans. Corn crop rows used a zigzag cropping pattern. The data observed were components of plant vegetative and generative growth. Data analysis using factorial analysis of variance. The results showed the “Turiman Jale 2-7” system produced an average corn productivity of 14,110 kg/ha and an average soybean productivity of 2,370 kg/ha. The “Turiman Jale 2-7” system is able to optimize the productivity of acid dry land which relies on rainwater. The innovation “Turiman Jale 2-7” contributed to increasing the Cropping Index (CI) from CI = 100 to CI = 150-200.

Rainfall, land area, and subsidized fertilizer distribution system policies are predicted to affect the production of strategic crops in Lampung Province. This study aims to determine how much influence the rainfall, land area, and distribution system of subsidized fertilizers on the production of rice, corn and cassava in Lampung Province and determine the carrying capacity of climate, land and fertilizer distribution policies on the production of strategic food crops in Lampung. This study used a descriptive analysis method by taking data on rainfall, land area, subsidized fertilizer distribution system and time-series food crop production for 15 years (2002-2016). Data analysis used multiple linear regression with Eviews 9.0 software. Testing data using assumption tests (autocorrelation and multicollinearity), F test (overall), correlation coefficient (r), coefficient of determination (R). The results showed that each 1 mm/year increase in rainfall in Lampung Province from 2002-2016 would reduce rice production by 45.6 tons, corn by 87.97 tons and cassava by 733.6 tons. Meanwhile, every increase of 1 hectare of land in Lampung Province will increase rice production by 6.2 tons, corn 4.65 tons, and cassava 26.01 tons. In addition, the subsidized fertilizer distribution system variable which is also part of the production factor also plays a positive role in the production of rice, corn and cassava. The carrying capacity of rainfall, land area, and the distribution system of subsidized fertilizers on Lampung strategic food crop production are rice 96.1%, corn 86.9% and cassava 79.09%.