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Effect of Water Stress on the Yield of Groundnut

S.Pervin
Scientific Officer
IWM Division, BARI, Gazipur.

M. S. Rahman
Scientific Officer
IWM Division, BARI, Gazipur.

P.K. Sarkar
Principal Scientific Officer
IWM Division, BARI, Gazipur.

S.K. Biswas
Senior Scientific Officer
IWM Division, BARI, Gazipur.

A.Z. Milla
Scientific Officer
IWM Division, BARI, Gazipur.

A. Khatun
Principal Scientific Officer
IWM Division, BARI, Gazipur.

Abstract/ Executive Summary:

Scarcity of water is the most severe constraint for development of agriculture in Bangladesh. Under this condition, the need to use the available water economically and efficiently is unquestionable. The objectives of the study was to identify crop growth stages during which the crop can withstand water stress with limited effect on yield and a suitable irrigation options against drought for sustainable production. The results showed that variation in timing and amount of irrigation had a reasonable impact on groundnut grain yield. The late season stage of groundnut was the most sensitive to water stress in Joydebpur location for the given soil and weather condition. On the other hand, water stress during the early and mid stage had a limited effect on grain yield. Although maximum yield was obtained from the treatment fulfilling entire crop water requirement, deficit irrigation can be an effective practice for higher water productivity, and thus irrigated areas can be increased in water resources limiting situations.

Keywords: Groundnut, water productivity, irrigation

Location: Central farm, IWM Division, BARI, Joydebpur, Gazipur

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity:

Objectives:

The study was undertaken to identify the stages of crops growth sensitive to water stress of different magnitudes and a suitable irrigation options against drought for sustainable production.

Methodology:

The experiment was conducted at the research field of Irrigation and Water Management Division, BARI, Gazipur during the rabi season of 2010-2011 on groundnut crop (BARI Chinabadam-8). With a randomized complete block design (RCBD) and three replications the treatments were selected based on applying irrigation at different growth stages as below: T1 = Full irrigation (control) T2 = Water stress at early stage T3 = Water stress at mid stage T4 = Water stress at late stage T5 = Water stress at mid and late stage The soil was a silty clay loam having a bulk density of 1.50 gm/cc and volumetric water content at permanent wilting point (PWP) and field capacity (FC) equal to 23% and 43.5%, respectively. Seeds were sown on 28 November 2010 at the rate of 100 kg/ha. The unit plot size and line to line spacing were 4×3 m and 30 cm, respectively. Standard fertilizer doses was applied in the field. A common irrigation (5mm) was applied (except T2 treatment for maintaining water stress at sowing stage) after sowing for ensuring good germination. Intercultural operations such as weeding, earthing up and pesticide application were done as when necessary. Groundnut was harvested on 23 July 2011, and growth and yield data were collected.

Source of Information: BARI Annual Research Report 2010-2011

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the first year study, it is observed seen that three stage (early, mid and late) were sensitive to water in relation to ground grain yield. Late stage is more sensitive to water in comparison to other water stresses at early and mid stage in Joydebpur location for the given soil and weather condition.

Knowledge Management: Report/Proceedings