The need for food is currently increasing so that to meet food needs, agricultural land, both dry land and paddy fields, is needed. Rice fields in Southeast Sulawesi are quite extensive, but rice productivity is still low. The use of inorganic fertilizers continuously for a long time, results in damage to the physical properties of the soil. The purpose of the study was to determine the effectiveness of the application of complete liquid organic fertilizer packages and inorganic fertilizers on the growth and yield of paddy rice. The study used a randomized block design (RAK) with 5 fertilization treatments and 3 replications. The results showed that inorganic fertilization with a dose of 50% Local fertilizer recommendation + POCL fertilizer package had a significant effect on the number of tillers, number of productive tillers, empty grain and filled grain and yielded 6.52 tons/ha GKG. Farming analysis on the treatment of reducing inorganic fertilizers by 50% from the local fertilizer recommendation and added to the POCL fertilizer package gave a greater profit of Rp.17,870,905.
The study aimed to determine the effect of nitrogen rates and planting systems on the incidence and severity of rice blast under naturally infected rice plants and their relationship to rice yield performance. Recommended nitrogen rate for both direct seeding was 93.2kg/ha. Treatments consisted of 75% recommended-N rate, 100% recommended-N rate, 150% recommended-N, and existing farmer’s practice. Treatments were applied in a three-way splitted-N application at 14, 30, and 45 days after planting, respectively. The results indicate that rates of N fertilization affected disease incidence of the rice blast where the low-N application was generally lower than recommended-N rate, high-N rate, and farmer’s practice, both on jajar legowo 2:1 and broadcasted direct seeding. This study revealed that recommended-N application, although has a higher disease incidence than low-N application, could tolerate yield loss due to rice blast by producing more productive tillers, number of grains per panicle, and reducing the number of unfilled grains. This study generally showed that jajar legowo 2:1 direct seeding gave lower disease incidence and severity to the rice blast than broadcasted direct seeding. The study suggested an appropriate recommended-N rate and jajar legowo 2:1 direct seeding (double row) was incorporated into the rice blast management strategies.
Effectiveness of Site Specific Nutrient Management (SSNM) Application for Rice on IrrigatedLand at Southeast Sulawesi. Fertilizing technology is a component technology to increase the rice production, otherwise the existing recommendation for fertilizing is not locally specific. Site Specific Nutrient Management (SSNM) is a software technology to obtain the site specific fertilizing recommendation.The research was applied to analyze the performance of plant growth, production, and economic aspect on irrigated rice area in South East Sulawesi. The research was conducted using action research by comparing SSNM with farmer existing technology for two seasons including wet season (October 2011 -January 2012) for 4 ha area collaborated with 40 farmers and dry season (Juli -November 2012) for 21,4 ha and collaborated with 25 farmers at Uepai Sub District in Konawe District. The result showed that tillering quantity and rice yield of those using SSNM recommendation were significantly higher and the number of empty grains was significantly lower than farmer's practice as well. The rice productivity using SSNM recommendation was higher 20 -34% than farmer's practice. SSNM software was compatible to use in setting doses of N, P and K recommendation with rate of production target reached 87,5% for season I and 89,5% for season II. The application of SSNM technology contributed to increase income by IDR3.912.200 in wet season and IDR2.838.700 in dry season. MBCR value were 5,12 in wet season and 5,70 in dry season those showed SSNM technology was feasible to be applied. Keywords: nutrient, SSNM, Uepai ABSTRAKPemupukan merupakan salah satu komponen teknologi yang penting dalam upaya peningkatan produksi padi, namun teknologi rekomendasi pemupukan yang digunakan selama ini kurang spesifik. PHSL adalah aplikasi berbasis komputer yang dapat digunakan untuk memperoleh rekomendasi pemupukan yang spesifik lokasi. Kajian dilakukan untuk mengetahui keragaan pertumbuhan, produksi, dan aspek ekonomi penerapan teknologi PHSL pada lahan sawah irigasi di Sulawesi Tenggara. Kajian dilakukan melalui kaji terap dengan membandingkan antara teknologi pemupukan berdasarkan PHSL dengan teknologi pemupukan berdasarkan kebiasaan petani selama dua musim tanam yaitu pada MH 2011 (Oktober 2011 -Januari 2012 pada luasan 4 ha yang melibatkan 40 orang petani dan MK 2012 (Juli -November) pada luasan 21,4 ha melibatkan 25 orang petani di Kecamatan Uepai Kabupaten Konawe. Hasil kajian menunjukkan bahwa jumlah anakan produktif dan hasil padi sawah yang menggunakan rekomendasi pemupukan PHSL lebih tinggi dan berbeda nyata sementara jumlah gabah hampa lebih rendah dan berbeda nyata dibandingkan dengan teknologi petani. Produktivitas padi yang menggunakan rekomendasi pemupukan PHSL lebih tinggi 20% -34% dibandingkan dengan teknologi eksisting petani. Aplikasi PHSL relatif baik dalam menentukan dosis pupuk N, P dan K dengan tingkat pencapaian target produksi mencapai 87,5% pada MT I dan 89,5% pada MT
The purpose of this study was to obtain a package of location-specific fertilizer technology on lowland rice that can be utilized by users in Southeast Sulawesi. The study was conducted in Konawe District, Southeast Sulawesi Province, on first planting period from January to May 2016. The experiment used a randomized block design consisting of 4 treatments repeated 6 times. Materials and equipment used include Mekongga variety of rice seeds, inorganic fertilizers (Urea, SP 36 and NPK (15,15,15)), pesticides, Paddy Soil Test Kit, hoes, and scales. Data analysis was performed with Anova which continued with the significance test using Duncan Multiple Range Test (DMRT). The results of the study showed that there were three adaptive fertilizer technology packages, namely: (1) Integrated cropping calendar treatment plus Organik Matter (OM); (2) Integrated cropping calendar treatment treatment without OM; and (3) Farming System treatment plus OM.
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