Comparative Effects of Deficit Irrigation and Partial Root Zone Drying (PRD) on Growth, Yield and Water use Efficiency of Rabi Maize

This paper evaluates the effect of partial root zone drying (PRD) and deficit irrigation (DI) strategies on yield and water use efficiency of the drip-irrigated corn on clay soils under the Mediterranean climatic conditions in Southern Turkey. Four deficit (PRD-100; PRD-75; PRD-50; and DI-50) and one full irrigation (FI) strategies based on cumulative evaporation (E pan) from class A pan at 7-day interval were studied. Full (FI) and deficit irrigation (DI-50) treatments received 100 and 50% of Epan, respectively. PRD-100, PRD-75 and PRD-50 received 100, 75 and 50% Epan value, respectively. The highest water use was observed in FI as 677 mm, the lowest was found in PRD-50 as 375 mm. PRD-100 and DI-50 resulted in similar water use (438 and 445 mm). The maximum grain yield was obtained from the FI as 10.40 t/ha, while DI-50 and PRD-100 resulted in similar grain yields of 7.72 and 7.74 t/ha, respectively. There was a significant difference among the treatments with respect to grain yields (P < 0.01). The highest water use efficiency (WUE) was found in PRD-100 as 1.77 kg/m3, and the lowest one was found in FI as 1.54 kg/m3.

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Effects of Deficit Irrigation and Phosphorus Levels on Growth, Yield, Yield Components and Water use Efficiency of Mung Bean (Vigna radiata (l.) Wilczek) at Alage, Central Rift Valley of Ethiopia

Agricultural Research & Technology Open Access Journal ◽

10.19080/artoaj.2019.21.556167 ◽

2019 ◽

Vol 21 (3) ◽

Author(s):

Arebu H

Keyword(s):

Water Use Efficiency ◽

Water Use ◽

Vigna Radiata ◽

Mung Bean ◽

Rift Valley ◽

Yield Components ◽

Deficit Irrigation ◽

Growth Yield ◽

Use Efficiency ◽

Phosphorus Levels

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Evaluating Growth, Yield, and Water Use Efficiency of African and Commercial Ginger Species in South Africa

Water ◽

10.3390/w11030548 ◽

2019 ◽

Vol 11 (3) ◽

pp. 548 ◽

Cited By ~ 1

Author(s):

Auges Gatabazi ◽

Diana Marais ◽

Martin J. Steyn ◽

Hintsa T. Araya ◽

Motiki M. Mofokeng ◽

...

Keyword(s):

Water Stress ◽

Water Use Efficiency ◽

Plant Species ◽

Water Use ◽

Root Zone ◽

Growth Yield ◽

Wild Plant ◽

Use Efficiency ◽

Number Of Stems ◽

The Impact

Ginger species play an important economic role as medicinal plants, food flavourings, and dietary supplements. Products from ginger, including oil and fresh and dried rhizomes can be used to treat malaria, asthma, headaches, and act as anti-inflammatory and anti-microbial agents. The cultivation of wild plant species can alleviate the pressure from harvesting from the wild. Under cultivation, the major constraints on crop yield and quality are water availability and plant nutrition. Therefore, the impact of water stress on commercial and African ginger was assessed in the rain shelter study. Irrigation treatments were based on the maximum allowable depletion (MAD) levels of plant available water in the root zone (T1: 20–25% MAD, the control; T2: 40–45% MAD; T3: 60–65% MAD; T4: 80–85% MAD). As water stress decreased, the plant height and number of stems per plant of both plant species were positively affected. The number of open stomata was higher for well-watered and less stressed treatments in both ginger species. Higher fresh and dry rhizome yields were recorded for commercial ginger at all water treatments as compared to those from African ginger. In general, water use efficiency (WUE) of fresh and dry rhizome yield was higher for commercial ginger as compared to the indigenous African ginger, while moderately stressed treatments generally resulted in the highest WUE for both species.

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