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.

Journal to Publish Research Papers in the field of Environment, Agriculture and Biotechnology. It is DOI peer reviewed online journal.

Lampung is one of the centers for shallot development in Indonesia. The application of location-specific off-season shallot cultivation technology and the use of superior varieties is expected to be able to guarantee its availability throughout the year and overcome price fluctuations. For this reason, it is necessary to study the cultivation of off-season shallots with varieties in accordance with market demand. This activity was carried out in Tanggamus Regency, from January to December 2018. The experimental design was the Split Plot, where the main plot was the use of mulch and without mulch and as sub-plots were three shallot varieties, namely: 1. Bima Brebes; 2. Trisula; and 3. Bali Karet varieties. Each treatment was repeated four times. The data obtained were analyzed using variance with DMRT at the 5% level. The results of the study show that off-season shallot cultivation is promising to be cultivated by farmers with an average of 14.59 tonnes/ha using Bima Brebes, Trisula, and Bali Karet varieties. Bali Karet variety has good prospects to be developed and planted off-season because they are more resistant to pests and diseases and have the highest production (20.87 tonnes/ha) compared to Bima Brebes and Trisula varieties.

This study aimed to evaluate the ability of microbes from the rumen contents of cattle as antagonists of pathogenic fungi and as liquid organic fertilizer (LOF) containing P-solubilizing bacteria in rice plants. The mixture consisting of 5 kg rumen contents of cattle, 2 kg of rice bran, 1 kg of molasses, and 10 L of tap water was fermented for 14 days. After fermentation, the mixture was filtered to separate the liquid from the solid components. The solid portion was collected for the isolation and screening of contained bacteria. Subsequent tests included biochemical tests, antagonistic activity tests, DNA extraction, PCR amplification, phosphate solubilization ability testing, inhibitory ability study, and application of LOF in a screen house. One bacterial isolate (PTK2TB code) exhibited the highest antagonistic activity against three tested pathogenic fungi (inhibits more than 50%). Subsequent 16SrDNA sequence analysis showed that this isolate belongs to the same group as the type strain and reference strain of Bacillus amyloliquefaciens. Furthermore, out of the 90 bacterial isolates obtained, 20 demonstrated a high capacity for phosphate solubilization. Additionally, LOF containing phosphate-solubilizing bacterial isolates positively impacted rice growth and yield.

One of the canters for cassava cultivation in Bogor Regency is Sukaraja District. Farmers in this area have been growing cassava several decades ago. This survey aims to determine the characteristics of cassava farmers, cultivation methods, knowledge and attitudes and perceptions of farmers with the arrival of a new invasive pest mealybug Phenacoccus manihoti Matt-Ferr. Surveys were conducted during September until November 2017, by interviewing 60 farmers distributed in three villages. Our studies revealed as much as 52% of respondents aged over 60 years, with the main occupation is farming. In term of level of education, about 83% of the farmers were graduates or have been in elementary school. Land area used for cassava cultivation generally (88%) were less than 0.50 ha. Most of the farmers (87%) were cultivator, with over 15 years experiences in cassava farming. Cassava varieties widely grown by farmers were Roti (90%), followed by Manggu (15%) and Jimbul (5%). The majority (97%) of farmers used goat manure, and the rest (3.3%) chicken manure. Manure was given when the plant 15-30 days. with a dosage of 11-15 ton/ha. Urea was given twice when the plant aged 3 and 7 months, with a dosage of 200-500 kg/ha. Weeding generally (68%) were conducted twice when the plant 4 and 8 months old. Harvest generally (92%) was carried out at 10-13 months. Farmers generally (87%) considered P. manihoti as the most important pests of cassava. The most farmers (82%) mentioned that the mealybug began attacking cassava since 2007. It seems that they equated P. manihoti with the papaya mealybug (Paracoccus marginatus) which also attacked cassava. Nearly half the respondents said that attacks by the cassava mealybug caused yield losses about 40-50%. Nevertheless, farmers generally do not perform control measures.