Upland rice production at South Sumatra is still low compared to national average production level due to low soil fertility. Therefore, effort to increase soil fertility level is needed such as through application of Trichocompost and NPK fertilizers at dry land area. This research objective was to determine the application effect of Trichocompost produced from rice straw and NPK fertilizers on the growth and yield of upland rice crop of henic strain at dry land area. The methods used in this research was a 2 by 3 Factorial in Completely Randomized Design with two treatment factors and three replications for each treatment. Trichocompost fertilizer treatments (T) were consisted of: T0 (without Trichocompost: 0 ton/ha; T1: 10 ton/ha Trichocompost; T2: 20 ton/ha Trichocompost and T3: 30 ton/ha Trichocompost, whereas NPK fertilizer treatments (P) were consisted of: P1: 200 kg NPK/ha; P2: 300 kg NPK/ha and P3: 400 kg NPK/ha. All data from this research was analyzed using Analysis of Variance to determine the given treatment effect by using SPSS 17.0 software. The results showed that application of Trichocompost produced from rice straw and NPK fertilizers had effect on the growth and yield of upland rice of henic strain at dry land area. Application of Trichocompost fertilizer produced from rice straw at dose of 30 ton/ha and NPK fertilizer at dose of 400 kg/ha tend to produce higher rice yield with magnitude of 4.6 kg/plot than that of other treatments.
Aims: This research objective was to determine productivity of two rice varieties using ratoon system through regulation of N fertilizer application at two flooding types in tidal lowland area. Place and Duration of Study: The study was conducted from February to July 2020 at two locations in tidal lowland area, i.e. B-type flooding located at -203859, 132S 10404428,449E and C-type flooding located at -203858,81S 10404426,745E in Mura Sugih Village, Tanjung Lago Subdistrict, Banyuasin District, South Sumatra, Indonesia. Study Design: The experimental design used in this study was Factorial Randomized Block Design with two treatments factors and four replications. The variety treatments (V) were consisted of V1: Inpari 30 and V2: Hipa 5 Ceva. N fertilizer application treatments (A) were consisted of A1: N fertilizing: 1/3 dose at planting period + 1/3 dose at 42 dap + 1/3 dose at 1 day after harvest (dah) of main crop; A2: N fertilizing: 1/3 dose at planting period + 1/3 dose at 42 dap + 1/6 dose at 1 dah of main crop + 1/6 dose at 21 dah of main crop. Result: The results showed that N fertilizer application regulation can increase productivity of two rice varieties using ratoon system at two flooding types land in tidal lowland area. Productivity of rice hybrid (Hipa 5 ceva) tend to be higher than that of rice inbred (Inpari 30) using ratoon system at two flooding types land in tidal lowland area. Productivity of two rice varieties using ratoon system tend to be higher at B-flooding type land than that of C- flooding type land.
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