The land is an important factor for people whose lives depend on the agricultural sector. The need for land for various uses has resulted in decreasing agricultural land which could have implications for decreasing food production. Alternative options which are expected to increase the potential for food production are the utilization of marginal land. Farmers with marginal land need to manage their production to meet household needs. So it is important to examine the marketable surplus, the level of commercialization, and the carrying capacity of marginal land. The research area was taken by purposive sampling method in Gunungkidul Yogyakarta. The samples taken were upland rice farmer households with the simple random sampling method. The marketable surplus analysis uses a marketable surplus formula, then the percentage is used to determine the level of farm commercialization. The carrying capacity analysis is carried out using the carrying capacity formula. The results showed that farmer households manage rice production by allocating an average of 59.1% for marketed and 40.9% for household consumption. The allocation of marketable surplus is greater than for household consumption, this shows that gogo rice farming households are towards commercially. The marginal land carrying capacity of 0.641 indicates that the land cannot be developed in an expansive and exploratory manner. The implication is in increasing upland rice production on marginal land, namely by an intensification of farming.
Water is a very important natural resource that is needed by all living things in all their life activities. Research related to water and how to use water resources is an important issue. The amount of fresh water available on earth is only about 25% of the total water. The aim of this study is to identify potential aquifers with the geoelectric method. This can be a consideration in determining the right location of the well in relation to efforts to obtain potential groundwater resources to meet the needs of raw water, both in terms of quantity and quality. The method used is a field survey by making observations including rock permeability measurements, infiltration, laboratory and studio work. Field work also includes geoelectric measurements, observations of groundwater levels and land use, and analysis of aquifers to determine the location of drill points that have the potential to be developed. The results show that the supply of raw water for a number of locations spread across Gunungkidul Regency is very much needed, considering that in the dry season there is a shortage of water. Groundwater conditions using the Schlumberger Method show that they have sufficient raw water potential, but in terms of depth and discharge, each location is different from one another. Planning for borehole construction is highly recommended, and planning is adjusted to the amount of demand and availability of raw water.
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