Bread wheat (Triticum aestivum L.) is an important food crop and source of income for farmers. It is the most responsive crop to fertilizer application. Field experiment was carried out on farmer's field in 2016/17 and 2017/18 main cropping seasons to evaluate the response of bread wheat to different blended fertilizers types and rates at Adiyo district, Southwestern Ethiopia. Eight treatments: Control (T1), four rates of NPSB: (46N, 54P2O5, 10S, 1.07B (T2); 69N, 72P2O5, 13S, 1.4B (T3), 92N, 90P2O5, 17S, 1.7B (T4) and 92N, 36P2O5, 7S, 0.71B (T5)) and three rates of NPSB+Cu: T2+Cu (T6), T3+Cu (T7), T4+Cu (T8) were laid out in randomized complete block design with three replications. Crop parameters measured were analyzed using proc GLM procedures in the SAS 9.3 version. Analysis was also performed to investigate the economic feasibility of the fertilizers for wheat production. Results indicated that application of both types and three rates of each fertilizer significantly (p < 0.05) affected all tested parameters except thousand seed weight, which was improved by only T4. The highest biomass (14.80 ton ha-1) and grain yield (6.537 ton ha-1) were obtained from application of highest rate of NPSB+Cu (T8) whereas the lowest biomass (9.36 ton ha-1) and grain yield (3.657 ton ha-1) were obtained from untreated soil. The application of NPSB+Cu (T8) also gave highest net benefit of Birr 46637.10 and acceptable MRR% was 151.02%. Hence farmers at the study area and similar agro-ecology could use NPSB+Cu @ a rate (92N, 90P2O5, 17S, 1.7B) and 600 gm Cu as foliar application. However, further verification study is needed to give reliable and consistent recommendation.
An experiment was conducted on farmer's fields during the main cropping season of 2016/2017 in Adiyo district, Southwestern Ethiopia to optimize fertilizer rate recommendation for major cereal production systems by using bread wheat (Triticum aestivum L.) as test crop. Experiment was laid out in a randomized complete block design (RCBD) with three replications for sixteen treatments. The grain yield and yield components were all elevated remarkably by applying different rates and types of fertilizers; five levels of N (0, 23, 46, 69 and 92 kg ha-1); four levels of P (0, 10, 20 and 30 kg ha-1); and four levels of K (0, 10, 20 and 30 kg ha-1). In addition, the last three diagnostic treatment foliar applications 45 days after planting and compared with control (absolute zero) treatment was done. Yield and yield components were measured using the SAS statistical package program version 9.3. The least significant difference (LSD) at 5% probability level was used to establish the difference among the means. To investigate the economic feasibility of the fertilizers, partial budget, dominance analysis and marginal rate of return were used. There was significant difference in grain yield and yield components of bread wheat (danda‘a variety) among the treatments. As the results showed high biological yield response recorded under 92N20P20K kg ha-1 (5.62 t ha-1) and the lower yield response was under control treatment (4.09 t ha-1); but high economic yield response recorded under 23N20P kg ha-1 (5.20 t ha-1). In conclusion, the fertilizers containing nutrient rate of 23N20P (kg ha-1) had brought the higher economic net benefit (27409.99 ETB/ha) with MRR (92.61%) and showed efficient use of fertilizer. Therefore, based on the biological yield response and economic net benefit, it is recommended to apply 23N20P (kg ha-1) fertilizers at Adiyo district, Southwestern Ethiopia and areas with the same soil conditions and agro-ecology. Key words: Economic analysis, foliar application, wheat yield, nutrient type, rate.
Appropriate fertilization methods for a particular crop based on real limiting nutrients and crop demands are cost-effective and wise utilization of fertilizers for long-term agricultural productivity. An experiment was done to assess alternative fertilizer types and rates for better maize production during main cropping season of 2018 and 2019. The fertilizers were set depending on the study area's limiting nutrients, which include NPS and NPSB at various rates. There are seven treatments in the experiment: (1)no fertilizer; (2) NPS: 69N, 54P2O5, 10S; (3) NPS: 92N, 72P2O5, 13S; (4) NPS: 115N, 90P2O5, 17S; (5) 69N, 54P2O5, 10S, 1.05B NPSB; (6) 92N, 72P2O5, 13S, 1.4B NPSB and (7) 115N, 90P2O5, 17S, 1.7B NPSB. Treatments were placed out in a randomized complete block design and replicated three times on two farmers' fields. The study showed that using NPS mixed fertilizer had a substantial impact on maize output when compared to the control. Treatment 2 (NPS; 69N, 54p2o5, 10S) yielded significantly greater maize yield over control at (P<0.05). Similarly, with an appropriate marginal rate of return (128.2%), treatment 2 (NPS; 69N, 54P2O5, 10S) had the largest net benefit (30908.5 ETB/ha). As a result, maize producers in the area of study should use NPS with the nutrient ratios of 69N, 54P2O5 and 10S. Int. J. Agril. Res. Innov. Tech. 12(2): 56-59, December 2022
Low level or no use of organic and inorganic fertilizers and serious imbalances soil nutrients, depressed potato yields and pose accelerated mining of native soil nutrients. Present on-farm studies was undertaken to observe the combined effects of FYM and compost along with inorganic fertilizers, particularly NPSB on potato production. The experiment comprised of seven treatments: No fertilizer, recommended NP (115 kg N and 92 kg ha-1 P2O5), NPSB (115 kg N and 92 kg P2O5, 6.5 kg S. and 0.71 kg B ha-1), 10 tone FYM ha-1, 10 tone compost ha-1, 5 tone FYM + 50% NPSB (57.5 kg N and 92 kg P2O5 ha-1), and 5 tone compost + 50% NPSB ha-1 were arranged in RCBD with three replications. The yield and yield components were collected and subjected to mean separation and economic analysis. The analysis of variance indicated that either applied organic and inorganic fertilizers combined or alone significantly (p ≤ 0.05) improved potato yield at Chena. Full dose of each FYM and compost, recommended NP rate and NPSB gave similar potato yield. The highest average marketable and total fresh potato tuber yield (27.44, 27.92 t ha-1, respectively) were recorded by combined application of 5 t FYM ha-1 with 50% NPSB (115 kg N and 92 kg P2O5, 6.5 kg S. and 0.71 kg B ha-1) which is economically acceptable with MRR (1239.7%), whereas the lowest tuber yield (14.45 t ha-1) was obtained from unfertilized plot. Hence, combined application of 50% FYM and 50% NPSB proved best potato yield in the study area. Int. J. Agril. Res. Innov. Tech. 12(1): 18-22, June 2022
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