scholarly journals Influence of water stress on phenological development, biomass production and yield of Malaysian aerobic and lowland rice

2019 ◽  
pp. 1927-1935
Author(s):  
Nadzariah Kamarul Zaman ◽  
Mohd Yusoff Abdullah ◽  
Sariam Othman ◽  
Nadzirah Kamarul Zaman
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Growth Performance ◽  
Stress Condition ◽  
Lowland Rice ◽  
Sensitive Period ◽  
Yield Reduction ◽  
Growth Stages ◽  
Water Stress Condition ◽  
Initiation Stage

This experiment was conducted to examine the comparative growth performance and yield of the first Malaysian aerobic rice variety, MARDI Aerob 1 (MA1) along with local lowland rice, MR 253 grown under water stress condition at selected growth stages. The experiment consisted of four treatments with three replications arranged in a randomized complete block design. The four treatments consisted of the control with no water stress throughout (T1), and water stress imposition at panicle initiation (T2), flowering (T3) and ripening (T4) stages. Water stress treatments were terminated when water deficit symptoms such as leaf rolling and wilting were detected. The effects of stress were assessed using parameters related to phenology, biomass and yield components. Results showed that both varieties were significantly affected, when water stress was imposed at the panicle initiation stage. At this stage, the water stress delayed the phenological development, reduced the panicle dry mass, and severely caused grain yield reduction for both varieties. The MR 253 variety had higher grain yield than MA1 under normal aerobic condition but not under water stress, while MA1 still was able to maintain reasonable high yield even under water stress condition, except when the water stress occurred at the panicle initiation stage. Panicle initiation stage was the most sensitive period for both varieties as water stress at this stage greatly affected the overall growth performance and grain yield for both varieties.

scholarly journals Wheat response to water stress condition at different growth stages in Amibara, Ethiopia

2019 ◽  
Vol 14 (32) ◽  
pp. 1493-1498
Author(s):  
M. Hassen Jemal ◽  
T. Wondimu ◽  
R. Borena Fikadu ◽  
N. Kebede ◽  
A. Niguse ◽  
...  
Keyword(s):  
Water Stress ◽  
Stress Condition ◽  
Growth Stages ◽  
Water Stress Condition ◽  
Response To Water ◽  
Different Growth Stages

scholarly journals Liquid organomineral fertilizer containing humic substances on soybean grown under water stress

2016 ◽  
Vol 20 (5) ◽  
pp. 408-414 ◽  
Author(s):  
Marcelo R. V. Prado ◽  
Oscarlina L. dos S. Weber ◽  
Milton F. Moraes ◽  
Carlos L. R. dos Santos ◽  
Morgana S. Tunes
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Humic Substances ◽  
Stress Condition ◽  
Water Stress Condition ◽  
Plant Emergence ◽  
Soybean Plants ◽  
Phosphorus And Potassium ◽  
Red Latosol ◽  
Nitrogen Phosphorus

ABSTRACT This study evaluated the effect of an organomineral fertilizer enriched with humic substances on soybean grown under water stress. The experiment was performed in a greenhouse using a Red Latosol (Oxisol) with adequate fertility as substrate, in which soybean plants were cultivated with and without water stress. The experimental design was randomized blocks, in a 2 x 5 factorial scheme (two moisture levels and five fertilizer doses: 0, 1, 2, 4 and 8 mL dm-3), totaling 10 treatments, with four replicates. The organomineral fertilizer was applied in the soil 21 days after plant emergence and the water regimes were established one week thereafter. The fertilizer was not able to attenuate the effects of water stress, reducing soybean grain yield by more than 50% compared with plants cultivated under no stress. Fertilizer doses caused positive response on soybean nutrition and grain yield and, under water stress condition, the most efficient dose was 5.4 mL dm-3. There were lower leaf concentrations of nitrogen, phosphorus and potassium and higher concentrations of sulfur in plants under stress. Humic substances favor the absorption of micronutrients.

scholarly journals Growth and Yield of Basmati and Traditional Aromatic Rice As Influenced By Water Stress and Nitrogen Level

2014 ◽  
Vol 10 (2) ◽  
pp. 52-62 ◽  
Author(s):  
MA Mannan ◽  
MSU Bhuiya ◽  
MIM Akhand ◽  
MM Saman
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Rice Variety ◽  
Reproductive Stage ◽  
Nitrogen Level ◽  
Yield Reduction ◽  
Growth Stages ◽  
Optimum Level ◽  
Spikelet Sterility ◽  
Nitrogen Levels

The experiment was done at the Bangladesh Rice Research Institute Farm, Gazipur during Boro season to determine the critical growth stage where water stress affect on yield reduction and to find out optimum level of nitrogen and to select stress tolerance nitrogen responsive rice variety. Water stress was imposed at i) vegetative stage, ii) reproductive stage, iii) grain filling stages and compared with iv) control (no water stress). Forty day-old seedlings of rice variety; BasmatiPNR, Basmati-D and Kalijira were transplanted on 15 December. Plant spacing was maintained at 20cm x15cm. Nitrogen was top dressed at 0, 70, 105 and 140 kg ha-1 at different growth stages. Increased spikelet sterility, resulting low grain yield. The highest grain yield was observed in stress free crop irrespective of nitrogen levels. However, grain yield increased with the increase of nitrogen levels irrespective of water stress. In the high fertilized crop, percentage of spikelet sterility increased with the increase water stress especially at the reproductive stage. Among the tested varieties the short stature Basmati PNR performed well by reducing spikelet sterility irrespective of nitrogen level and water stress conditions. DOI: http://dx.doi.org/10.3329/jsf.v10i2.17958 J Sci Found, 2012;10(2):52-62

scholarly journals Morphophysiological Responses of Common Bean (Phaseolus vulgaris L.) Genotypes to Water Stress

2021 ◽  
Vol 5 (1) ◽  
pp. 1-17
Author(s):  
Mebelo Mataa ◽  
◽  
Philip Kalima ◽  
Davies Lungu ◽  
◽  
...  
Keyword(s):  
Water Stress ◽  
Phaseolus Vulgaris ◽  
Grain Yield ◽  
Common Bean ◽  
Stress Condition ◽  
Research Station ◽  
Moisture Regime ◽  
Phaseolus Vulgaris L ◽  
Chl A ◽  
Water Stress Condition

Yield of common bean (Phaseolus vulgaris L.) is highly constrained by water deficit especially when this occurs during the reproductive development. The purpose of the study was to determine the association of the morphophysiological traits with water stress and how this affects grain yield in common beans. A field experiment involving eight common bean genotypes and three water regimes (50 %, 75 %, and 100 % of crop evapotranspiration) was conducted at National Irrigation Research Station, Mazabuka district during the 2012 growing season. A Split plot design with four replications was used; with soil moisture regime (main plot) and the genotypes (subplot). Based on variation in water stress tolerances, 8 test genotypes - Gadra, KE 3, KE 4, ZM 4488, SER 76 SER 180, SER 89 and CAR-ZAR were used. Water stress treatments were imposed at pre-flowering stage and was discontinued after 43 days when the crop was in its late reproductive stage. Significant differences were found among genotypes for Chlorophyll a (Chl a), Chlorophyll b (Chl b), Total Chlorophyll, Relative water content, Grain yield, Number pods per, Seed weight, Seeds per pod and Days to 50 % flowering under the three water stress conditions. The grain yield in normally irrigated condition (2191.3 kg ha-1) was 60 % higher than in high water stress condition (866.2 kg ha-1), while in the low water stress condition (1078.3 kg ha-1), the reduction in grain yield was 50.8 %. There were significant genotype by environment showing that the genotypes behaved differently under the different growing conditions. Results suggested that Gadra, KE 4, ZM 4488, and SER 180 were water stress tolerant while the SER 89, CAR-ZAR, KE 3 and SER 76 were water stress sensitive genotypes. These results suggest that a selection method based on 100 SW, Chl a, Chl b, and NPP can be used in breeding for bean genotypes to water stress.

scholarly journals Effects of composted oil palm bunch wastes and chemical fertilizer on growth of oil palm seedling under water stress condition

Agro-Science ◽  
2015 ◽  
Vol 12 (1) ◽  
pp. 17
Author(s):  
S Ovie ◽  
GU Nnaji ◽  
PO Oviasogie ◽  
PE Osayande ◽  
P Irhemu
Keyword(s):  
Water Stress ◽  
Oil Palm ◽  
Stress Condition ◽  
Chemical Fertilizer ◽  
Water Stress Condition ◽  
Palm Bunch

scholarly journals Competition between drought-tolerant upland rice cultivars and weeds under water stress condition

2013 ◽  
Vol 31 (2) ◽  
pp. 291-302 ◽  
Author(s):  
F.B. Cerqueira ◽  
E.A.L. Erasmo ◽  
J.I.C. Silva ◽  
T.V. Nunes ◽  
G.P. Carvalho ◽  
...  
Keyword(s):  
Water Stress ◽  
Leaf Area ◽  
Stress Condition ◽  
Upland Rice ◽  
Total Concentration ◽  
Dry Weight ◽  
Rice Cultivars ◽  
Drought Tolerant ◽  
Water Stress Condition ◽  
Water Conditions

The objective of this study was to evaluate the competitiveness of two cultivars of upland rice drought-tolerant, cultured in coexistence with weed S. verticillata, under conditions of absence and presence of water stress. The experiment was conducted in a greenhouse at the Experimental Station of the Universidade Federal de Tocantins, Gurupi-TO Campus. The experimental design was completely randomized in a factorial 2 x 2 x 4 with four replications. The treatments consisted of two rice cultivars under two water conditions and four densities. At 57 days after emergence, were evaluated in rice cultivars and weed S. verticillata leaf area, dry weight of roots and shoots and total concentration and depth of roots. Was also evaluated in rice cultivars, plant height and number of tillers. Water stress caused a reduction in leaf area, the concentration of roots and vegetative components of dry matter (APDM, and MSR MST) of rice cultivars and Jatoba Catetão and weed S. verticillata. The competition established by the presence of the weed provided reduction of all vegetative components (MSPA, and MSR MST) of cultivars and Jatoba Catetão. It also decreased the number of tillers, the concentration of roots and leaf area. At the highest level of weed competition with rice cultivars, a greater decrease in vegetative components and leaf area of culture, regardless of water conditions.

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