Faculty of Agriculture, Universitas Sebelas Maret (Publishing Systems)
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AGROPOLITAN AREA DEVELOPMENT IN SUPPORTING ENVIRONMENTAL CONSERVATION FUNCTION IN BOYOLALI DISTRICK, CENTRAL JAVA, INDONESIA
Get PDFBoyolali which is an agropolitan district in Indonesia has been initiated since 2003. The main objective of agropolitan development is to support the development of the region to support agriculture and economy. Taken in the implementation of programs and policies of government activity that began to develop in the field of agribusiness, which is then applied by farmers and agribusiness. With the implementation of various programs and activities in the development of the possible development of the region Agropolitan Agropolitan causes various positive and negative impacts on the environment. Agropolitan principle one of which is the development of sustainable agriculture implemented, no negative impact on the environment, and even provides support for environmental protection. Agropolitan development that takes into account the environmental functions to support reforestation in the area of Mount Merapi and Merbabu to reduce the impact of global climate changeThe purpose of this study are (1) to determine the implementation of the development in the area Agropolitan Boyolali. (2) to determine the factors that support and hinder the development of agropolitan in support of environment conservation in Boyolali. (3) to find the solution that has been pursued in addressing the factors that hinder the development of agropolitan in support of environment conservation in Boyolali.The research method used was a descriptive study (descriptive research) and exploratory. The results stand out from this study is that the development agropolitan supporting environment conservation in Boyolali still weak and threatened. However, existing solutions from the government and society in the region to confront agropolitan threats
Briquettes Compost and Liquid Fertilizer Application for Yellow Local Rice Growing on Bamboo Rafts as Floating System
Get PDFGrowing rice had been done previously by applying crumble compost on the floating raft but part of compost was lost through runoff, so briquettes compost needs to be buried in soil. The aims of this research were to find out the effects of briquettes compost and liquid fertilizer on rice and soil and plant nutrients content. Briquettes compost and liquid fertilizer were made of water mimosa (Neptunia prostrate Lam.). Briquettes were applied at rates of (0, 10, 20 and 30) ton ha-1 and liquid used at (0 and 20) ml clump-1. This experiment used Factorial Randomized Block Design. Briquette compost was made by mixing compost with starch and the application was by inserted into the soil. Liquid fertilizer was made from extracted compost and the application was sprayed on plant leaves. Results showed that the application of Briquette compost (10 ton ha-1) increased (0.34%) P and (1.88%) K plant contents significantly, compared to the control treatment were only (0.09%) for P and (1.38%) for K plant contents. Combination of briquettes compost (20 ton ha-1) and liquid fertilizer (20 ml clump-1) increased dried weight rice significantly to (4.55 ton ha-1)from (1.58 ton ha-1) for control treatment. Briquettes compost inserted into the soil had increased nutrients P and K absorbed due to more contact between roots and nutrients and produced more rice yield
CLIMATE CHANGE ADAPTATION ON LAND COVER OF SAND DUNES ECOSYSTEM PARANGTRITIS COASTAL AT BANTUL REGION, DAERAH ISTIMEWA YOGYAKARTA, INDONESIA
Get PDFInterpretation of imagery in 2003, 2010, and 2016 shows the changing patterns of land cover on coastal areas at Parangtritis Bantul. This change was triggered by climate change factors, especially rainfall. The study aims to: 1) mapping the pattern of land cover change on coastal sand dune Parangtritis ecosystem and its relation to climate change occurs; 2) determine the forms coastal sand dune ecosystem adaptation due to the climate change.The study was conducted by surveying and mapping. Firs creating a map of land cover temporally. Map of the pattern of land cover 2003 and 2010 of land area was obtained by image interpretation. The pattern of land cover in 2016 was obtained from the existing mapping month from May to September 2016. The changes pattern of land cover is shown by the calculation of the area coverage and type of land cover from time to time. Climate change is seen by the trend analysis of rainfall last 19-28 years. The link between land cover and climate change were analyzed descriptively. The forms observed adaptation of the dominant vegetation growing as land cover in the zone of active sand dunes.The results showed that from 2003 to 2016 a reduction in the extent of land cover types such as moor, natural bush, cultivated plants, ponds, and settlements. Land cover types shoals and sandbanks open beaches are also reduced. Rainfall trend analysis showed that the study area has increased the amount of rainfall. The rainy season in the area the research took place between the months of November to June, while the dry season lasts between the months of June to October. Adaptation form occurs that is increasingly broad and diverse types of vegetation found in sand dune ecosystems. The dominant vegetation that found such as grass run, pandanus thorns, thistle, Ipomea, cassava, gamal, fir shrimp, and dragon fruit
SOIL QUALITY INDEX RELATIONSHIP WITH RICE PRODUCTION IN SUKOHARJO REGENCY, CENTRAL JAVA, INDONESIA
Get PDFClimate change has an effect on the degradation of soil, water, growth and crop production. Soil degradation caused by various factors decrease in physical, chemical, and biological soil processes. The decrease in physical properties of the soil due to erosion, compaction, and fractures. The decrease in soil chemical properties is due to nutrient leaching, acidification, and salinization. The decrease of biological properties of the soil is due to the reduction of soil organic matter and diversity of soil biota. Climate change affects the diversity of organisms in the soil. Soil organisms requiring certain temperature conditions for its activities and the state of extremely dry, extreme wet, and increased soil temperature will affect the diversity of soil organisms. The use of fertilizers and organic materials can increase and balance the availability of nutrients needed by plants. The fertilizer can influence the soil fertility represented by a soil quality index. Soil quality is a measure to describe the condition of the soil based on three indicators of the physical, chemical and biological properties. The purpose of this research was to determine the relationship between soil quality with rice productivity in Sukoharjo, Central Java that will affect the climate change. The research was conducted in March-November 2015. The method in this research was a descriptive explorative by field surveying. The sampling method is purposive random sampling. Soil quality indices in eleven sites, Sukoharjo has medium and good (5.47 to 6.91) category. Soil quality indicators are the most influential on permeability, N-total, K-available, and soil organic matter. The regression Soil Quality Index with rice productivity is 17.7%. The relationship between Soil Quality Index against the highest rice yield soil Permeability has a coefficient determination 43%. Eleven sites has medium-good soil quality and rice productivity with medium categories
ANALYSIS OF AGRICULTURAL DROUGHT BASED ON DAILY WATER BALANCE AT RAINFED FARM LAND
Get PDFAgricultural drought related to soil moisture which is characterized by a deficit of soil moisture. The condition leads to the limitedness for crop culture due to soil moisture availability is not enough for plant’s needs. Therefore, this research aims at finding when exactly the agricultural drought occurred using water balance approach. This research employed a descriptive exploratory method which was done by surveying in the field and also supported by laboratory analysis. The component of daily local weather data, included air temperature, air relative humidity, soil temperature, soil moisture, and rainfall at two locations, each at Ampel and Teras District, Central Java, Indonesia from October 1st, 2015 to March 31st, 2016. Then laboratory analysis to determine soil water availability at pF 2.54 – 4.2 was conducted using hydraulic properties calculator. The results show that the meteorological drought at both locations ended earlier than the agricultural drought, which was the third decades (20th- 30th) of October 2015. But the agricultural drought ended on decadal (Nov. 2nd and Nov. 5th, 2015) At Ampel and Teras district, respectively. During dry conditions, the rain-fed lands were left fallow until the end of the agricultural drought, which enters rainy season. Start from this point, the lands can be planted with rice
Mobility of Zinc in Sandy Soil of Loukkos Area (northwestern Morocco)
No full textThis study investigated the effect of different leaching rates on the downward movement of zinc applied, as fertilizer, on the surface of a sandy soil. The experiment was conducted in polyethylene bags filled to 30 cm depth with sandy soil. A zinc supply of 15.3 10-3 cmolc kg-1 was applied to the soil surface as a solution of zinc sulfate. Three leaching rates were tested: 31 mm, 208 mm and 497 mm. Results showed the absence of zinc in the leachate for all leaching rates. Within the soil profile, the highest content on exchangeable zinc (15.3 10-3 cmolc kg-1) was recorded in the top soil layer (0-10cm) for all leaching rates. In the middle (10-20 cm) and in the lower (20-30 cm) layers, the exchangeable zinc content remained similar to that recorded before leaching (0.76 10-3 cmolc kg-1). The percentage of the cation exchange capacity occupied by zinc in the top soil layer increased after leaching. It averaged 0.35% for all leaching rates while it remained similar to that recorded before leaching (0.03%) for the middle and the lower layers. This increase was linked to the adsorption saturations sites particularly released by manganese, potassium, calcium and ammonium after their downward movement.
