scholarly journals Effect of Soil Water Deficit on Yield and Its Components at The Different Growth Stages in Rice (Oryza sativa)

2015 ◽  
Vol 37 (1) ◽  
pp. 79-92 ◽  
Keyword(s):  
Oryza Sativa ◽  
Soil Water ◽  
Water Deficit ◽  
Growth Stages ◽  
Soil Water Deficit ◽  
Different Growth Stages

Responses of osmotic adjustment and seed yield of Brassica napus and B. juncea to soil water deficit at different growth stages

2006 ◽  
Vol 57 (2) ◽  
pp. 221 ◽  
Author(s):  
Qifu Ma ◽  
Sharon R. Niknam ◽  
David W. Turner
Keyword(s):  
Brassica Napus ◽  
Soil Water ◽  
Water Deficit ◽  
Seed Yield ◽  
Osmotic Adjustment ◽  
Yield Reduction ◽  
Growth Stages ◽  
Drought Event ◽  
Soil Water Deficit ◽  
Seed Fill

Canola (Brassica napus L.) is a major rotation crop but low yield has limited its adoption by farmers in the low-rainfall regions of southern Australia, where drought events can occur at any stage of crop development. We examined the effect of soil water deficit on osmotic adjustment and seed yield of canola and mustard (B. juncea L.) at the juvenile, elongation, anthesis, or seed-fill stage under glasshouse conditions and post-anthesis drought in the field. At the juvenile and elongation stages, leaves of both canola cv. Monty and mustard line 397-23-2-3-3 adjusted osmotically after exposure to water deficit. In comparison, only the mustard line expressed osmotic adjustment at anthesis and neither genotype adjusted at the seed-fill stage. A single drought event at the juvenile or elongation stage had little effect on growth and seed yield of either genotype, whereas water deficit at anthesis or seed-fill stage reduced seed yield of the canola cultivar by decreasing pod number, seeds per pod, and/or harvest index but largely did not affect the mustard line. In the field where rainfall diminished and plants were subjected to increasing water deficit during the reproductive stages, canola cv. Karoo and mustard line JN25 showed higher osmotic adjustment at anthesis and less yield reduction than the canola cv. Monty. This study suggests that yield sensitivity to water deficit was mainly due to its effect on concurrent formation of yield components, but could be modified by the physiological trait of osmotic adjustment.

Water Consumption of Potato (Solanum Tuberosum) Grown under Water Deficit Regulated with Mulched Drip Irrigation

2013 ◽  
Vol 405-408 ◽  
pp. 2273-2276
Author(s):  
Heng Jia Zhang ◽  
Jing Li
Keyword(s):  
Soil Water ◽  
Water Deficit ◽  
Water Consumption ◽  
Drip Irrigation ◽  
Water Status ◽  
Starch Accumulation ◽  
Growth Stages ◽  
Soil Water Deficit ◽  
Crop Water Consumption ◽  
Mulched Drip Irrigation

An experiment was conducted to determine the effect of mulched drip irrigation under water deficit on soil water content (SWC), stored soil water (SSW), daily water consumption (DWC) and ratio of water consumption in total water use (RWC) of potato in an arid area. Five water deficit treatments designed to subject potato to various levels of soil water deficit at different crop growth stages and a full irrigation control were established. The result indicated that the maximum SWC was at 20 cm depth in soil profile and that in 10 to 40 cm increment varied sharply during potato growing season. The SWC, SSW, DWC and RWC were significantly affected by mulched drip irrigation at water deficit regulation stages except at starch accumulation. Therefore, proper levels of soil water deficit regulated with mulched drip irrigation at proper plant growth stages could be used to regulate soil water status, stored soil water and crop water consumption effectively.

scholarly journals Effects of soil water deficit on leaf nitrogen, chlorophylls and spad chlorphyll meter reading on growth stages of soybean

1970 ◽  
Vol 40 (2) ◽  
pp. 171-175 ◽  
Author(s):  
Shakil Uddin Ahmed
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Soil Water ◽  
Water Deficit ◽  
Leaf Nitrogen ◽  
Growth Stages ◽  
Soil Water Deficit ◽  
Flowering Stage ◽  
Soybean Leaf ◽  
Response To Water

Soybean leaf Nitrogen (N) status correlated linearly with the amount of chlorophylls and SCMR at flowering stage in response to water deficit levels. In addition, SCMR showed significant positive correlation with chlorophylls at flowering stage. Grain yield significantly correlated to the leaf nitrogen as well as to the chlorophylls and SCMR at flowering stage in response to water deficit levels. These relationships indicated that the water stress decreased leaf nitrogen, chlorophylls and SCMR which in turn caused decreased grain yield of soybean. The results from the study suggest that, flowering stage is the best time for prediction on the adverse effects of water stress on leaf nitrogen assimilation, chlorophylls and SCMR on potential yielding ability of soybean.Key words: Soil water deficit; Leaf nitrogen; Chlorophyll (a+b); Growth stages; Soybean DOI: http://dx.doi.org/10.3329/bjb.v40i2.9773   Bangladesh J. Bot. 40(2): 171-175, 2011 (December)

Relation of Soil Water Deficit, Involved by Precipitation and Corn Yield on Vinkovci Area (Eastern Croatia)

1998 ◽  
Vol 26 (3) ◽  
pp. 289-296
Author(s):  
M. Jurišić ◽  
Ž. Vidaček ◽  
Ž. Bukvić ◽  
D. Brkić ◽  
R. Emert
Keyword(s):  
Soil Water ◽  
Water Deficit ◽  
Corn Yield ◽  
Soil Water Deficit

Water use by winter wheat as affected by soil management

1984 ◽  
Vol 103 (1) ◽  
pp. 189-199 ◽  
Author(s):  
M. J. Goss ◽  
K. R. Howse ◽  
Judith M. Vaughan-Williams ◽  
M. A. Ward ◽  
W. Jenkins
Keyword(s):  
Winter Wheat ◽  
Soil Water ◽  
Water Deficit ◽  
Water Use ◽  
Management Practices ◽  
Soil Management ◽  
Maximum Depth ◽  
Water Extraction ◽  
Soil Water Deficit ◽  
Potential Yield

SummaryIn each of the years from September 1977 to July 1982 winter wheat was grown on one or more of three clay soil sites (clay content 35–55%) in Oxfordshire where the climate is close to the average for the area of England growing winter cereals.The effects on crop water use of different soil management practices, including ploughing, direct drilling and subsoil drainage, are compared. Cultivation treatment had little effect on the maximum depth of water extraction, which on average in these clay soils was 1·54 m below the soil surface. Maximum soil water deficit was also little affected by cultivation; the maximum recorded value was 186±7·6 mm. Subsoil drainage increased the maximum depth of water extraction by approximately 15 cm and the maximum soil water deficit by about 17 mm.Generally soil management had little effect on either total water use by the crop which was found to be close to the potential evaporation estimated by the method of Penman, or water use efficiency which for these crops was about 52 kg/ha par mm water used.Results are discussed in relation to limitations to potential yield.

Sign in / Sign up

Export Citation Format

Share Document