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Maize is one of the important crop so production improvement is must be done to sufficient the needs. Plant growth promoting rhizobacteria has become a feasible, efficient and sustainable approach to increase maize productivity. This study investigated the effect of several rhizobacteria consortia formulations and bacterial density on the growth and yield of five maize cultivars in Indonesia. The experiment was carried out using a nested-split plot randomized complete block design (RCBD). The treatments consisted of two rhizobacteria consortia formulation (granule and liquid) as nested, four rhizobacterial density (0, 107, 108, and 109 cfu mL–1) as main plot, and five maize cultivars (Bisi 18, Bisi 2, Pertiwi 3, Bisi 228, and Bisi 220) as subplot. The growth and yield data were analyzed through ANOVA and by means using DMRT α 5 % to determine the best treatment. Application of rhizobacteria consortia formulation on five maize varieties did significantly affect the growth and yield of maize although bacterial density did not showed the same results. Rhizobacteria consortia with granule formulation appeared significantly higher yield performance than liquid. Pertiwi 3 tended to produce higher average yield than other varieties for both rhizobacteria consortia formulation although the varieties did not significantly contribute on ear weight variables.

The purpose of the study was to determine the effectiveness of liquid NPK fertilizer with a composition of 12:9:7 on sweet corn plant. The research was conducted at the Mojosari Research Station, Mojokerto district, East Java, Indonesia, in September to December 2020, using a randomized complete block design with eight treatments and repeated four times. The treatments consisted of one treatment without fertilization (control), one treatment dose of 300 kg phonska + 300 kg urea per ha (recommendation), six treatments of liquid NPK fertilizer. Application of liquid NPK fertilizer is done by dissolving in water as much as 200 mL per plant. The results showed that the application of liquid NPK fertilizer had an effect on plant height, stem diameter, stover weight, cob length, ear diameter, and cob weight. The application of liquid NPK fertilizer at a dose of 12.5 cc L-1 gave the same or comparable response to the standard fertilization treatment with an agronomic effectiveness level > 95 %.

This study used a completely randomized design with six treatments consisting of four types of liquid organic fertilizer, NPK Mutiara fertilizer, and control (without fertilizer) which was repeated four times. The results showed that the treatment of liquid organic fertilizer had a significant (P < 0.05) to very significant (P < 0.01) effect on the growth and yield of marigold flower plants. The highest weight of marigold flowers per plant was found in the treatment of liquid organic fertilizer mixed with plant waste, livestock waste, and fish waste of 79.70 g, followed by treatment of liquid organic fertilizer of fish waste at 59.13 g, liquid organic fertilizer from livestock waste at 51.43 g, NPK Mutiara fertilizer of 34.78 g, plant waste of 28.17 g, and the lowest flower weight per plant was found in the control (without fertilizer) of 25.57 g per plant. The mixed liquid organic fertilizer treatment gave the best effect, which was able to increase the number of marigold flowers up to 246 %, flower diameter 114 %, flower fresh weight 137 %, and flower weight per plant up to 311. 69 % compared to the control.

A popular beverage globally attributable to its energizing properties and distinctive flavor, coffee is one of the majorly produced agricultural merchandise. With the reputation, nonetheless, comes a sizeable waste in its production process. Reduce, reuse, recycle, and improve circular economy —coffee pulp and husk waste into functional food, i.e., coffee cherry flour. This study examined the amino acid composition and contents originating from four locations: Ijen Farm, Karang Ploso Farm, Mengani Farm, and La Boitê. In triplication, samples were filtrated, derivated, and analyzed through high-performance liquid chromatography with fluorescence detection. The obtained data were then computed to determine the amino acid retention times and peak areas to facilitate the quantification of amino acid concentrations within the samples. ANOVA was involved in evaluating the significance of amino acid level variations, and then nonparametric correlation and cluster tests were conducted for a dendrogram presentation. The result stated that Serine, Histidine, Threonine, Alanine, Cysteine, Methionine, and Isoleucine are positively correlated to the area characteristics, while Aspartic acid, Glutamic acid, Glycine, Arginine, Proline, Tyrosine, Valine, Lysine, Leucine, and Phenylalanine are of negative association. This finding suggests that locally-grown coffee cherry flour should be feasible for functional food beneficial to health.

This study aimed to analyze gluten free biscuits’s from purple sweet potato flour, rice bran flour, and coffee cherry flour; using completely randomized design method. The treatments applied were the ratio of adding purple sweet potato flour, bran flour and coffee cherry flour B0 (100 %: 0 % : 0 %); B1 (80 % : 20 % : 0 %); B2 (60 % : 30 % : 10 %); B3 (40 % : 40 % : 20 %); B4 (20 % : 50 % : 30 %); B5 (0 % : 60 % : 40 %) with four repetitions. The results showed that there was a significant effect between the proportions of the composite use of purple sweet potato flour, bran flour and coffee cherry flour on moisture content, ash content, fiber content, fracture power, color intensity and organoleptic taste. The best formulation was treatment B2 which had 5.05 % moisture content, 2.82 % ash content, 8.80 % protein content, 25 fat content, 05 %, carbohydrate content 58.28 %, crude fiber content 7.63 %, antioxidant activity 83.68 %, color intensity (L = 41.15; a = +5.05; b = +5.97), power broken 6.118 N, texture 4.52 (Slightly not crunchy), taste 5.40 (neutral), and aroma 5.60 (neutral).

Compost is considered not only to improve soil nutrients but also as a carrier of microplastic (MPs) pollution on agricultural land. Bibliometric analysis is a quantitative review approach that employs statistics, data mining, and mathematics to identify new academic trends. It is increasingly more prevalent and is utilized in several academic disciplines. To evaluate the evolution and extension of this body of knowledge and to forecast its future path, the present study analyzed Scopus-indexed research publications on compost from 2018 to 2022. To perform the bibliometric analysis, the VOSviewer software and Scopus Analytics were used. A total of 111 journal articles (n = 77) and conference papers (n = 3) were extracted. The number of research documents published by 111 authors was steadily increasing annually. China is the leading country in the number of publications and research collaborations. The current results offset global scientific efforts on MPs contamination in compost and inform that there is potential for compost to be a carrier of MPs contaminants in plants.