Yield and water-production functions of two durum wheat cultivars grown under different irrigation and nitrogen regimes

Karam, F.; Kabalan, Rabih; Breidi, Joêlle; Rouphael, Youssef; Oweis, Theib

doi:10.1016/j.agwat.2008.09.018

Cited by 84 publications

(61 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other studies conducted in the Near East and North Africa region confirm results obtained in Syria, e.g., [18,19]; including the search for quality and to cope with drought stress [20]. The need…”

Section: Introductionsupporting

confidence: 67%

Comparing Sprinkler and Surface Irrigation for Wheat Using Multi-Criteria Analysis: Water Saving vs. Economic Returns

Darouich

Cameira

Gonçalves

et al. 2017

Water

View full text Add to dashboard Cite

Abstract:Coping with water scarcity using supplemental irrigation of wheat (Triticum aestivum L.) in the semi-arid northeast Syria is a great challenge for sustainable water use in agriculture. Graded borders and set sprinkler systems were compared using multi-criteria analysis. Alternative solutions for surface irrigation and for sprinkler systems were developed with the SADREG and the PROASPER design models, respectively. For each alternative, two deficit irrigation strategies were considered, which were characterized using indicators relative to irrigation water use, yields and water productivity, including farm economic returns. Alternatives were ranked considering two contrasting priorities: economic returns and water saving. A first step in ranking led to a selection of graded borders with and without precise land levelling and of solid set and semi-permanent sprinkler systems. Precise-levelled borders were better for water saving, while non-precise ones ranked higher for economic returns. Semi-permanent set systems have been shown to be better in economic terms and similar to solid set systems when water saving is prioritized. Semi-permanent sprinkler systems rank first when comparing all type of systems together regardless of the considered deficit irrigation strategy. Likely, border irrigation is appropriate when wheat is in rotation with cotton if the latter is surface irrigated. When peace becomes effective, appropriate economic incentives and training for farmers are required to implement innovative approaches.

show abstract

Section: Introductionsupporting

confidence: 67%

Comparing Sprinkler and Surface Irrigation for Wheat Using Multi-Criteria Analysis: Water Saving vs. Economic Returns

Darouich

Cameira

Gonçalves

et al. 2017

Water

View full text Add to dashboard Cite

show abstract

“…232e -0,012r ; R 2 = 0.88; P < 0.01. During the growth season, this equation is used to convert measured soil resistivity (r) by installed granular matrix sensors (Watermark Soil Moisture Sensors, irrometer Co. inc., riverside, Ca) to volumetric soil water content (Karam et al 2009;Madani et al 2010). Granular matrix sensors were located at two depths (20 and 40 cm) in the soil profile near the fibrous root zone.…”

Section: Methodsmentioning

confidence: 99%

“…Efficient n use is crucial for economic wheat production and the prevention of n emissions to ground and surface water (Spiertz et al 2006, Spiertz 2009), therefore, optimizing irrigation regimes and nitrogen management taking into account crop phenology will produce optimum grain yields (Karam et al 2009). …”

mentioning

confidence: 99%

Irrigation regimes affect early root development, shoot growth and yields of maize (Zea mays L.) in tropical minor seasons

Madani¹,

Shiranirad²,

Pazoki³

et al. 2010

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

The experiments were laid out to understand the mechanisms causing yield limitations imposed by post-anthesis water and nitrogen deficiencies in plants with modified source-sink ratios. two soil-water regimes were allotted to the main plots. at anthesis, three levels of n were applied: none, 25% and 50% of total the n supply. Spike-halving caused reduction in grain yield at both water regimes and all n supply levels, showing that the reduction in grain number can not be compensated by a higher individual grain weight. Sink reduction by trimming 50% of the spikelets reduced grain number per ear by 38.5% and increased individual grain weight by 12.0%, which shows the plasticity in grain weight and grain set of wheat if sufficient assimilates are available. additional nitrogen supply at anthesis had no significant effect on the total aboveground biomass, but increased grain yield through more allocation of dry matter to grains. our findings suggest that for rainfed wheat with optimum n supply and supplemental irrigation, wheat growers should choose cultivars with a high grain number per ear and manage the crop to increase grain number per unit of land (sink capacity).

show abstract

“…Water deficit at the grainfilling period induces early senescence, reduces photosynthesis and shortens the grain-filling period (Inoue et al 2004;Waines 2006). Such Remobilization of dry matter in wheat 291 responses would result in the reduction of kernel weight, straw yield and grain yield (Alvaro et al 2007;Karam et al 2009). …”

Section: Grain Yieldmentioning

confidence: 99%

Remobilization of dry matter in wheat: effects of nitrogen application and post-anthesis water deficit during grain filling

Bahrani

Abad

Sarvestani

et al. 2011

New Zealand Journal of Crop and Horticultural Science

View full text Add to dashboard Cite

Pre-anthesis stored dry matter in wheat (Triticum aestivum L.) is important in a Mediterranean climate because grain filling greatly depends on the remobilization of pre-anthesis assimilates. A water deficit at the post-anthesis stage may increase the dry matter stored before anthesis. This field study assessed the effects of post-anthesis water deficit and the application of nitrogen (N) fertilizer on three wheat cultivars. Data collected over 2 years showed that, in wheat with a post-anthesis water deficit (WD), dry matter remobilization efficiency reached its maximum (29%) at 80 kg N ha(1 , but further additions of N decreased it. The contribution of remobilized dry matter to a grain ranged from 7% to 23% of the grain's dry weight and, in WD grain, was 78% more than that of well-watered (WW) grain. Grain from plots on which fertilizer had been applied had a lower proportion of remobilized dry matter than did grain from unfertilized plots. For grain from adequately fertilized treatments, limited irrigation was associated with reduced dry matter remobilization. The amount of non-structural carbohydrates (NSC) remaining in parts of the plant was much greater in the WW than in the WD treatments. The 160 kg N ha (1 treatment also left more NSC unused than did the no N treatment. The active grain-filling period was shortened substantially by a water deficit, but this was countered by the application of 160 kg N ha (1 . Grain-filling rates for all cultivars or all N treatments were increased by inducing a water deficit. For WD grains, kernel weight was reduced when fertilizer application rates were 0Á80 kg N ha (1 , but increased when rates were 160 kg N ha(1 , unlike WW grain exposed to similar fertilizer regimes. The grain yield of WD wheat was reduced by 25%, and that of grain receiving no fertilizer was 15% lower than that receiving 80 kg N ha (1 . Among three wheat cultivars, cv. Chamran produced the highest grain yield (19% higher than that of either cv. Shiraz or cv. Marvdasht). It was concluded that the stored carbohydrate had provided an important buffer against water stress during grain filling, in terms of yield.

show abstract

Yield and water-production functions of two durum wheat cultivars grown under different irrigation and nitrogen regimes

Cited by 84 publications

References 27 publications

Comparing Sprinkler and Surface Irrigation for Wheat Using Multi-Criteria Analysis: Water Saving vs. Economic Returns

Comparing Sprinkler and Surface Irrigation for Wheat Using Multi-Criteria Analysis: Water Saving vs. Economic Returns

Irrigation regimes affect early root development, shoot growth and yields of maize (Zea mays L.) in tropical minor seasons

Remobilization of dry matter in wheat: effects of nitrogen application and post-anthesis water deficit during grain filling

Contact Info

Product

Resources

About