Abstract
Upland soils in West Kalimantan used for agricultural activities reach about 483,077 hectares. However, this land potential is not yet optimally exploited due to poor soil fertility. To increase its productivity, there is a need to invent technology packages that are not only effective but also efficient. This research is designed to study the growth of upland rice and the changes in certain soil properties after low-input treatment applications. This research used a Completely Randomized Design. There were 6 treatments and 4 replications. The treatment levels were P0 (no treatment), P1 (7tons of cow manure/ha + 300 kg NPK compound), P2 (15tons of cow manure/ha + 300 kg NPK compound), P3 (7tons of compost/ha + 300 kg NPK compound), P4 (15tons of compost/ha + 300 kg NPK compound), and P5 (600 kg/ha NPK compound). Parameters included plant height and dry weight, NPK absorptions, soil pH, organic C content, and NPK contents after soil treatment. The results showed that upland rice responded well to low-input amendment treatments compared to that of grow-in soil with no input treatments. Both the treatments using 15 tons of cow manure and 15 tons of rice straw compost per hectare, each plus 300 kg of NPK, were suggested to be further research topics for treatments in upland soil of West Kalimantan.
Highlights
The number of upland soil in West Kalimantan that is potential for agricultural crops is about 233,946 ha
The total area of upland rice cultivation tends to increase, the production level is still relatively low. It shows that the upland rice cultivation practices have become an important part of the traditional lifestyle of lowincome people, especially for ethnic Malay and Dayak in the rural areas of West Kalimantan
The soil samples were collected from the depth of 20 cm from upland rice fields (00o18’56.9"N, 109o16’35.0"E) which belong to a farmer in the Village of Kayu Tanam, Mandor subdistrict, Landak district, West Kalimantan
Summary
The number of upland soil in West Kalimantan that is potential for agricultural crops is about 233,946 ha. The total area of upland rice cultivation tends to increase, the production level is still relatively low It shows that the upland rice cultivation practices have become an important part of the traditional lifestyle of lowincome people, especially for ethnic Malay and Dayak in the rural areas of West Kalimantan. As they are known as the predominant ethnic groups living in the rural areas of West Kalimantan, this agricultural issue has become a crucial focus. Does it need to be well-discussed, as it involves many aspects of rural life, but it needs to be better developed to increase the production level of upland rice and in turn increase the people’s income levels and prosperity
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