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Growth and Yield Performance of Foxtail Millets Under Salinity

A. Nahar*
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706

M. A. Mannan
Department of Agronomy Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706

M. A. A. Mamun
Department of Agronomy Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706

T. K. Ghosh
Department of Crop Botany Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706.

Abstract/ Executive Summary:

Crop diversification in saline affected coastal areas is crucial for food security in Bangladesh. A pot experiment was conducted at polythene house at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706 during May to August, 2017 to determine the effect of salt stress on growth and yield performance of foxtail millets. Five foxtail millets genotypes viz. (i) BARI Kaon-1 (check), (ii) BD-878, (iii) BD-897, (iv) BD-891 and (v) BD-881 were tested under three salt stresses viz. (i) control (0 dS/m), (ii) 6 dS/m and (iii) 12 dS/m. Completely randomized design (CRD) with three replications was followed in the study. The growth parameter viz. stem dry matter, leaf dry matter and root dry matter production of foxtail millets genotypes were significantly varied due to salinity stresses. Salinity stresses also significantly influenced yield and yield contributing characteristics of foxtail millets. The genotypes BD-897 and BD-881 produced the higher dry matter, grains per panicle and grain yield per plants under the saline level of 6 dS/m. The higher stress tolerance index of both the genotypes demonstrate that the genotypes BD-897 and BD-881 were more salt tolerant.

Keywords: Coastal area, Minor cereal, Salt tolerance, Stress, Yields.

Location: At polythene house at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706

Start Date: 00-05-2017

End Date: 00-08-2017

Program Area: Risk Management in Agriculture

Commodity: Foxtail millet

Objectives:

This experiment was designed to evaluate the effect of salt stress on growth and yield performance of foxtail millets.

Methodology:

A pot experiment was conducted at the Agronomy Research Field of Bangbandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706 from May to August 2017. The site is located under Agro Ecological Zone- 28. Five foxtail millets genotypes viz. (i) BARI Kaon-1 (check), (ii) BD-878, (iii) BD-897, (iv) BD-891 and (v) BD-881 were tested under three salt stress viz. (i) control (0 dS/m), (ii) 6 dS/m and (iii) 12 dS/m. The experiment was laid out in a complete randomized design with three replications. The pots used for the experiment having 30 cm length and 24 cm diameter. The pots were filled with soil and cowdung with 2:1 ratio. Nitrogen, triple super phosphate, murate of potash and gypsum were applied at the rate of 70- 28-50-11 kg ha^-1 N-P-K-S, respectively (FRG, 2012). Ten seeds of foxtail millet per pot were sown on 15 January 2017 and the seeds were germinated within 20 January 2017. Salt solution was applied at three days interval starting from 15 days after sowing (DAS) and continued up to 64 DAS. The crops were harvested at full maturity selecting three plants per pot. Data was collected on leaf dry matter, stem dry matter, root dry matter production, grain weight, panicle weight and length and grain yield per plant^-1. To record dry matter the partitioned plant parts were dried in an oven at 70^oC for 5 days. Three plants per pot were harvested at maturity and threshing, cleaning and drying of grain were done separately pot by pot. Grain was cleaned and sun dried. Stress tolerance index (STI) was calculated using following equation suggested by (Fernandez, 1992).

STI = Ys x Yp

`Yp²

Where, Ys = yield in stress condition, Yp = yield in control (non-stress) condition and `Yp² = mean yield in control condition. Data were analyzed using ANOVA to evaluate treatment effects and the means were separated following least significant difference (LSD) at 5% level of probability (Gomez and Gomez, 1984).

Source of Information: Bangladesh Agron. J. 2018, 21(1): 51-59

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The cropping intensity is low in saline affected areas of Bangladesh. In this study, it was found that foxtail millets genotypes BD-897 and BD-881 produced higher dry matter and grain yield under 6 dS/m salinity level. However, stress tolerance index of BD-897 and BD-881 were also higher. Therefore, it could be concluded that foxtail millets genotypes BD-897 and BD-881 may be cultivated in saline affected (6 dS/m) coastal areas of Bangladesh after satisfactory result from on farm trial at farmer’s field at different salinity levels.

Knowledge Management: Journal