Effects of Manure Types to the Growth and Yield of Sweet Sorghum (Sorghum bicolor L.) in Dry Land Samanhudi (1*), Puji Harsono (2), Eka Handayanta (3), Rofandi Hartanto (4), Ahmad Yunus (1), Kurnia Prabawati (5)
1) Study Program of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret, and Center for Research and Development of Biotechnology and Biodiversity, LPPM Universitas Sebelas Maret, Jl. Ir. Sutami 36A Surakarta 57126 - Indonesia
2) Study Program of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret,
Jl. Ir. Sutami 36A Surakarta 57126 - Indonesia
3) Study Program of Animal Science, Faculty of Agriculture, Universitas Sebelas Maret,
Jl. Ir. Sutami 36A Surakarta 57126 - Indonesia
4) Study Program of Food Science and Technology, Faculty of Agriculture,
Universitas Sebelas Maret, Jl. Ir. Sutami 36A Surakarta 57126 - Indonesia
5) Student of Faculty of Agriculture, Universitas Sebelas Maret,
Jl. Ir. Sutami 36A Surakarta 57126 - Indonesia
*) Corresponding author: samanhudi[at]staff.uns.ac.id
Abstract
Sweet sorghum is one of the supenor commodity to increase production of food and energy. Sweet sorghum seeds produce carbohydrates that can be processed into food ingredients, while the sap from the stems and starch in the seeds can be converted into bioethanol through fermentation processes. Sweet sorghum crops tolerant to drought and stagnant water, can produce on marginal land, and relatively resistant to pests and diseases. The purpose of this research is to determine the interaction between sweet sorghum varieties and kinds of organic fertilizer on growth and yield of sweet sorghum in dry land. The research method is a factorial experiment using Randomized Completely Block Design (RCBD), consists of two factors, which is sweet sorghum varieties and manure types. The varieties which was used are Kawali and Numbu. The second treatment which was used are without manure, chicken manure, goat manure, cow manure, and vermicompost. Total treatment combination is ten units and each combination repeated three times. The research variables are plant height, stem diameter, leaf area index, fresh stover weight, dry stover weight, the content of sap, panicle length, number of seeds per panicle, and production per hectar. Data were analyzed using F test with 95% of confidence level, if there is significantly a difference, and then followed by DMRT method in level of 5%. The result of this research shows that the highest production per hectar is sorghum treatmented by chicken manure equals to 2.64 ton/ha. On the other hand, for lowest production per hectar is sorghum treatmented by without manure equals to 1.77 ton/ha.
Keywords: dry land, organic manure, sweet sorghum, Sorghum bicolor L.
