#vermicompost

Soil amendment in many countries is used by farmers to improve soil’s physical, chemical and biological properties for better crop growth and development. The study was conducted to evaluate the effect of soil amendment through the use of vermicompost on the growth and yield of tomato. It was conducted at the upland research area of the Cagayan State University, Piat Campus from January to April 2019. Six treatments used as follows: T1 ‒ Control, T2 ‒ 80-90-60 kg NPK ha-1, T3 ‒ 80-90-60 kg NPK ha-1 + 5 bags Vermicompost ha-1, T4 ‒ 80-90-60 kg NPK ha-1 + 15 bags Vermicompost ha-1, T5 ‒ 80-90-60 kg NPK ha-1 + 20 bags Vermicompost ha-1 and T6 ‒ 10 bags Vermicompost ha-1. The experiment was laid out following the Randomized Complete Block Design (RCBD) with three (3) replications. Based on the result, the tallest plants at 30 and 60 DAT were obtained by the plants applied with the recommended rate of fertilizer amended with 5 to 20 bags of vermicompost. Application of 80-90-60 kg NPK ha-1 amended with 15 to 20 bags vermicompost ha-1 produced the most number of fruits, heaviest fruits per plant and per sampling area. The combined application of the recommended rate of inorganic fertilizer at the rate of 80-90-60 kg NPK ha-1 amended with 15 to 20 bags of vermicompost not only the heaviest fruits but also obtained the highest ROI with values of 319 and 378.73 percent. This nutrient management practice in tomato production is a good agricultural practice modality that attempts to support the Organic Agriculture Law of 2010. Hence, it is recommended.

This study evaluated the effects of integrated nutrient management on the growth, ear characteristics, and yield performance of different sweet corn varieties under field conditions in Lakewood, Zamboanga del Sur, Philippines. The experiment was conducted using a 3 × 5 factorial arrangement in a Randomized Complete Block Design (RCBD) with three replications. Three sweet corn varieties namely Macho F1, Purple Corn, and Glutinous Corn were tested under five fertilizer treatments consisting of different combinations of vermicompost, Humus Plus, and complete fertilizer. Growth parameters such as plant height, number of leaves, and stem girth were measured at 30 and 60 days after sowing (DAS), while yield and yield components were evaluated at harvest. Results showed that both variety and fertilizer treatment significantly influenced vegetative growth, ear characteristics, and yield performance. Integrated nutrient management and vermicompost-based treatments generally produced superior plant growth compared with sole organic fertilization. Macho F1 treated with 100% vermicompost recorded the tallest plants, greatest leaf production, and superior stem development during later growth stages. Purple Corn fertilized with 100% complete fertilizer produced the highest yield at 12.69 t/ha and the heaviest ear weight per plot. In contrast, treatments relying solely on Humus Plus generally resulted in lower growth performance and reduced yield, particularly in Glutinous Corn. Ear length and ear circumference were also improved under integrated and vermicompost treatments, while the highest number and weight of marketable ears were observed in Macho F1 under vermicompost and complete fertilizer applications. The findings indicate that balanced nutrient management combining organic and inorganic fertilizers enhances nutrient availability, improves crop growth, and increases sweet corn productivity under field conditions.

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Production of healthy seedling is a must for successful plant production. This paper deals with the evaluation of the effects of five different vermicompost applied at four different concentrations on seed germination and seedling quality of Solanum melongena var. arka keshav and mayalu in laboratory and greenhouse conditions. The experiments were conducted in a complete randomized design with twenty treatments and control per variety. Germination %, seedling length, seedling biomass, and seed vigour index (SVI) were measured at the end of the experiment. Vermicompost application improved all the parameters in both environmental conditions except seed germination that decreased with increasing vermicompost concentration. Vermicompost sample V2 and control produced the highest seedling quality in var. arka keshav and mayalu, respectively. Vermicompost had an inhibitory effect on seedling quality at laboratory condition in both varieties. Conversely, in greenhouse condition, vermicompost sample V1 yielded highest SVI of 1340.15 in arka keshav and 1225.66 in mayalu. Highest vermicompost concentration yielded the best quality seedling with SVI of 1219.88 and 1153.56 in var. arka keshav and mayalu, respectively. This suggested an important role of vermicompost concentration in growing media for enhanced seedling quality. The findings also suggested that favourable pH for developing seedlings of S. melongena is slightly acidic. The study firmly concludes that vermicompost differentially affects seedling growth and quality according to the concentrations and seed variety.