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Effect of Seed Source and Foliar Application of Npksb on Soybean

KM Haque
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

MA Karim
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

MM Haque
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

E Zaman
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

MAA Khan
Department of Plant Pathology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

ARM Solaiman
Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

MAA Mamun
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

This study was conducted to evaluate the effect of foliar-spray of NPKSB on the productivity of soybean grown from seeds of different sources, viz. farmers, private seed traders and Bangladesh Agricultural Development Corporation (BADC). The yield and yield attributes of soybean significantly increased when the plants were sprayed with NPKSB fertilizers at the pod-filling stage. The longest plant (115 cm) was obtained from seed source of BADC and sprayed with NPKSB, while the shortest (100 cm) was found with farmers seeds under control condition. The highest number of pods per plant (51) was found from the plants grown with seeds of BADC and sprayed with NPKSB, followed by that grown with the private trader’s seeds; while, the lowest was recorded from that grown with the farmers’ seeds. The foliar spray showed a significant increase in 1000-grain weight irrespective of seed sources. The heaviest 1000-grain (121g) was measured from the plants grown with BADC seeds followed by that of private traders’ seeds, while the lowest 1000-grain weight was measured from that collected from farmers’ source. The highest grain yield (2.71 t/ha) was obtained from the plants grown with the seeds of private trader’s source and sprayed with NPKSB nutrients, followed by that collected from BADC source. The percent of increase in soybean grain yield due to application of NPKSB was 51, 25 and 17% for private seed traders, BADC and farmers seed sources, respectively. Therefore, seeds collected from private seed traders responded better to NPKSB spray compared to that of BADC and farmers seed sources.

Keywords: Foliar applied nutrient, Pod-filling stage, Seed-sources, Soybean productivity

Location: At the farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1706 during January to May 2015

Start Date: 00-01-2015

End Date: 00-05-2015

Program Area: Crop-Soil-Water Management

Commodity: Organic fertilizer, Soybean

Objectives:

The present study was undertaken to evaluate the effect of different nutrients namely, nitrogen, phosphorus, potassium, sulphur and boron as foliar fertilization on the yield performance of soybean grown from seeds of different sources.

Methodology:

Soybean seeds used in the study were collected from three different sources, namely i) informal i.e. farmers seed, ii) semiformal i.e. private seed company/dealer, and iii) formal i.e. Bangladesh Agricultural Development Corporation (BADC). Farmers seeds were collected from six major soybean growing areas, namely i) Laxmipur, ii) Noakhali, iii) Chandpur, iv) Shariatpur, v) Bhola, and vi) Barisal districts. Seeds of private seed traders were collected from i) Thakurgaon, ii) Natore, iii) Laxmipur, and iv) Chandpur districts. Formal or BADC seeds were collected from the seed processing centers of i) Meherpur, ii) Feni, iii) Tebunia, and iv) Faridpur. The field experiment was conducted at the farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1706 during January to May 2015. The soil of the field belongs to Salna series of shallow Red Brown terrace (Saheed 1984). The texture of the soil was silty clay in surface layer and silty clay loam in subsurface layer. The soil of the plot was fertilized @ 50-175-100-80 kg urea-TSP-MOP-gypsum per hectare at the time of final land preparation. The experiment was laid out in a split plot design with three replications. The seeds collected from different sources were assigned in the main plots and the foliar spray of fertilizers in the subplots. Total number of plots was 18 having size of 3m×2m. Soybean seeds were sown on 31 January 2015 at a spacing of 30×5cm. First germination of seed appeared on 7 February 2015. Irrigation, weeding and other management practices were done as and whenever necessary. Urea (240 mg), TSP (200 mg), MOP (400 mg), Gypsum (350 mg) and Boron (200 mg) fertilizers were mixed thoroughly in a pot and ground into powder. This powdered fertilizer was mixed with one liter of water in a spray machine and then stirred thoroughly to make NPKSB solution. Foliar spray of NPKSB solution was done once at the beginning of pod-filling stage of soybean plant. The crop was harvested at full maturity on 23 May 2015. At harvest, data on plant height, pods/ plants, 100-seed weight and yield/ha were recorded. All the data were subjected to statistical analysis by using analysis of variances (ANOVA). The mean values of all the characters of all the treatments were evaluated and analysis of variances was performed by ‘F’ (variance ratio) test. Microsoft EXCEL and Statistix-10 software program were used wherever appropriate and the means were separated by LSD test.

Source of Information: Bangladesh J. Ecol. (2019) 1 (2) : 97-46

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The findings of this study indicated that foliar application of mixed NPKSB fertilizers at pod-filling stage had a great contribution to soybean productivity. This contribution in improving yield attributes and seed yield of soybean might be attributed to the accumulation of higher amount of macro (NPKS) and micro (B) element in plant tissue as a result of foliar spray that led to increase in photosynthetic activities of leaves. Earlier, Schon and Blevins (1990) also observed that the application of different nutrients in combination increased photosynthetic activities in soybean resulting from higher accumulation of metabolites in different organs of soybean plan. and this presumably contributed to the formation of greater number of pods per plant and seeds per pod. The results also suggest that the productivity of soybean plants increased as a result of balanced nutrient supply through foliar application during pod-filling stage, which, according to Garcia and Hanway (1976), and Carter and Tegeder (2016), was apparently due to the fact that photo assimilate was channeled to the developing seeds at the expense of photo assimilate allocated for roots and nodules, which led to receive supplemental food to serve as energy source for taking nutrients from the soil.

Knowledge Management: Journal