scholarly journals Jojoba Seed Yield Response to Water Stress under Circumstances of Sinai

2018 ◽  
Vol 28 (3) ◽  
pp. 1-11
Author(s):  
Elsayed Khattab ◽  
Gehan Amin
Keyword(s):  
Water Stress ◽  
Seed Yield ◽  
Yield Response ◽  
Response To Water ◽  
Jojoba Seed

scholarly journals Cultivar Dependent Impact on Yield and Its Components of Young Almond Trees under Sustained-Deficit Irrigation in Semi-Arid Environments

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 733 ◽  
Author(s):  
Saray Gutiérrez-Gordillo ◽  
Víctor Hugo Durán Zuazo ◽  
Virginia Hernández-Santana ◽  
Fernando Ferrera Gil ◽  
Amelia García Escalera ◽  
...  
Keyword(s):  
Water Stress ◽  
Deficit Irrigation ◽  
Water Status ◽  
Prunus Dulcis ◽  
Yield Response ◽  
Arid Environments ◽  
Almond Trees ◽  
Sustainable Irrigation ◽  
Response To Water ◽  
Semi Arid

Almond (Prunus dulcis Mill. (D.A. Webb)) plantations in irrigated semi-arid areas need to successfully face the new scenarios of climate change combining sustainable irrigation strategies and tolerant cultivars to water stress. This work examines the response of young almond (cvs. Guara, Marta, and Lauranne) subjected to different irrigation doses under semi-arid conditions (South-West Spain). The trial was conducted during two seasons (2018–2019) with three irrigation strategies: A full-irrigated treatment (FI), which received 100% of the irrigation requirements (IR), and two sustained-deficit irrigation strategies that received 75% (SDI75) and 65% (SDI65) of IR. Crop water status was assessed by leaf water potential (Ψleaf) and stomatal conductance (gs) measurements, determining the yield response at the end of each season. Different physiological responses for the studied cultivars were observed, especially considering the Ψleaf measurements. In this way, cv. Marta behaved more tolerant, while cvs. Guara and Lauranne maintained higher gs rates in response to water stress. These differences were also observed in terms of yield. The cv. Lauranne did not reflect yield losses, and the opposite trend was observed for cv. Guara, in which reductions on fruit numbers per tree were detected. On overall, effective irrigation water savings (≈2100 m3·ha−1 in SDI65) could be feasible, although these responses are going to be substantially different, depending on the used cultivar.

Corn Yield Response to Water Stress, Heat Units, and Management: Model Development and Calibration

1990 ◽  
Vol 54 (1) ◽  
pp. 209-216 ◽  
Author(s):  
J. B. Swan ◽  
J. A. Staricka ◽  
M. J. Shaffer ◽  
W. H. Paulson ◽  
A. E. Peterson
Keyword(s):  
Water Stress ◽  
Model Development ◽  
Management Model ◽  
Yield Response ◽  
Corn Yield ◽  
Heat Units ◽  
Response To Water

Growth and Yield Response of Different Brinjal Cultivars to Irrigation Deficit Conditions

2019 ◽  
pp. 78-84
Author(s):  
Shafeeq ur Rehman ◽  
Ishfaq Ahmad Hafiz ◽  
Irfan Ali ◽  
Nadeem Akhtar Abbasi
Keyword(s):  
Water Stress ◽  
Water Deficit ◽  
Fruit Yield ◽  
Growth And Yield ◽  
Yield Potential ◽  
Yield Response ◽  
Full Potential ◽  
Irrigation Level ◽  
Irrigation Deficit ◽  
Response To Water

Brinjal is an important vegetable crop having low fat content and high nutritional value. Brinjal is considered moderately sensitive to water deficit conditions. A study was conducted to investigate growth and yield potential of different brinjal cultivars i.e. ‘Black Long’, ‘Nirala’, ‘Bemisal’ and ‘Purple Queen’ in response to various levels of water stress by providing 100, 80 and 60% of the required irrigation. The results revealed that growth and yield characteristics of brinjal cultivars varied to a great extent in response to water stress. As expected, 100% irrigation level showed the highest plant growth and fruit yield, while a gradual decrease in growth and yield of brinjal was observed with increasing water stress, the lowest being at 60% irrigation level. ‘Black Long’ and ‘Nirala’ produced significantly better results for most of the parameters such as plant height, number of leaves, root length, number of flowers and fruits, fruit length and fruit yield per plant in response to varying degree of water stress. It is concluded from the results that ‘Black Long’ and ‘Nirala’ are best suited for arid areas which are facing water deficit conditions during most of the time in the year, but full potential of the crop can be achieved by managing the irrigation.

scholarly journals Dry Bean (Phaseolus vulgaris L.) Crop Water Production Functions and Yield Response Factors in an Arid to Semi-Arid Climate

2022 ◽  
Vol 65 (1) ◽  
pp. 51-65
Author(s):  
Vivek Sharma ◽  
Abhijit Rai
Keyword(s):  
Soil Moisture ◽  
Water Stress ◽  
Seed Yield ◽  
Yield Response ◽  
Water Production ◽  
Crop Evapotranspiration ◽  
Crop Water ◽  
Dry Bean ◽  
Bean Crop ◽  
Semi Arid

HighlightsDeficit irrigation negatively affected dry bean yield and yield components.Excess irrigation increased crop ETc but not dry bean yield.Soil moisture fluctuation was greater in the top 0.3 m of the soil profile compared to deeper depths.Crop water production function had a slope of 18.9 kg ha-1 mm-1 and threshold crop evapotranspiration of 171 mm.Dry bean crop was found to be sensitive to water stress (yield response factor Ky = 1.94).Abstract. Under changing climate conditions and declining water resources, understanding crop response to water stress is critical for effective irrigation management. The objectives of this study were to quantify dry bean (Phaseolus vulgaris L., cv. Othello) soil moisture dynamics, crop evapotranspiration (ETc), and yield response factor and to develop dry bean irrigation and crop water production functions (IWPF and CWPF). Five irrigation treatments, i.e., full irrigation (FIT), 75% FIT, 50% FIT, 25% FIT, and 125% FIT, were evaluated using a randomized complete block design (RCBD) with three replications for three years (2017, 2018, and 2019) in the arid to semi-arid intermountain region of Powell, Wyoming. The results showed a significant influence of irrigation on dry bean soil moisture dynamics and ETc. The dry bean crop showed a greater soil moisture fluctuation in the top 0.3 m of the soil profile compared to 0.6 m and at 0.9 m. ETc ranged from 187 to 438 mm, from 190 to 409 mm, and from 217 to 398 mm in the 2017, 2018, and 2019 growing seasons, respectively. A positive two-segment relationship was observed between dry bean seed yield and cumulative irrigation water applied. The average cumulative seasonal irrigation of 310 mm resulted in maximum seed yield. For all three years, the seed yield increased linearly with ETc. Combining the data from the three years resulted in a CWPF with a slope of 18.9 kg ha-1 mm-1 and an offset of 171 mm of ETc (i.e., the ETc required for crop establishment before any seed yield is produced, or threshold ETc). Moreover, the dry bean crop was found to be sensitive to water stress (Ky = 1.94). These results indicated that under the typical semi-arid to arid climate conditions of the intermountain region of Wyoming, deficit irrigation of dry bean may not be a viable strategy because the yield loss outweighs water-saving benefits. Keywords: Dry bean, Crop evapotranspiration, Crop production function, Irrigation water production function.

Responses of soybean genotypes to intercropping with maize in the Southern Guinea Savanna, Nigeria

2004 ◽  
Vol 52 (2) ◽  
pp. 157-163
Author(s):  
C. U. Egbo ◽  
M. A. Adagba ◽  
D. K. Adedzwa
Keyword(s):  
Seed Yield ◽  
Block Design ◽  
Field Trials ◽  
Yield Response ◽  
Ecological Zone ◽  
Land Equivalent Ratio ◽  
Guinea Savanna ◽  
Days To Maturity ◽  
Soybean Genotypes ◽  
Location Interaction

Field trials were conducted in the wet seasons of 1997 and 1998 at Makurdi, Otukpo and Yandev in the Southern Guinea Savanna ecological zone of Nigeria to study the responses of ten soybean genotypes to intercropping. The experiment was laid out in a randomised complete block design. The genotypes TGX 1807-19F, NCRI-Soy2, Cameroon Late and TGX 1485-1D had the highest grain yield. All the Land Equivalent Ratio (LER) values were higher than unity, indicating that there is great advantage in intercropping maize with soybean. The yield of soybean was positively correlated with the days to 50% flowering, days to maturity, plant height, pods/plant and leaf area, indicating that an improvement in any of these traits will be reflected in an increase in seed yield. There was a significant genotype × yield × location interaction for all traits. This suggests that none of these factors acted independently. Similarly, the genotype × location interaction was more important than the genotype × year interaction for seed yield, indicating that the yield response of the ten soybean genotypes varied across locations rather than across years. Therefore, using more testing sites for evaluation may be more important than the number of years.

Primary Root Elongation Rate and Abscisic Acid Levels of Maize in Response to Water Stress

Crop Science ◽  
2011 ◽  
Vol 51 (1) ◽  
pp. 157-172 ◽  
Author(s):  
Kristen A. Leach ◽  
Lindsey G. Hejlek ◽  
Leonard B. Hearne ◽  
Henry T. Nguyen ◽  
Robert E. Sharp ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Root Elongation ◽  
Primary Root ◽  
Elongation Rate ◽  
Root Elongation Rate ◽  
Response To Water

scholarly journals High Phosphorus Acquisition and Allocation Strategy Is Associated with Soybean Seed Yield under Water- and P-Limited Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 574
Author(s):  
Yun-Yin Feng ◽  
Jin He ◽  
Yi Jin ◽  
Feng-Min Li
Keyword(s):  
Water Stress ◽  
Water Supply ◽  
Seed Yield ◽  
Soybean Seed ◽  
Dry Weight ◽  
Water Regimes ◽  
P Acquisition ◽  
Application Rates ◽  
Soybean Genotypes ◽  
Water Treatments

Both water stress and P deficit limit soybean seed yield, but the effects of water regimes and P application rates, their interaction on P status, acquisition, and partitioning, and their roles in yield performance have not been well-studied. Two soybean genotypes (Huangsedadou (HD) and Zhonghuang 30 (ZH)) with contrasting seed yield and root dry weight (DW) were used to investigate the P status, P acquisition, P partitioning, and yield formation under two water regimes (well-watered (WW) and cyclic water stress (WS)) and three P rates (0 (P0), 60 (P60), and 120 (P120) mg P kg−1 dry soil). The results show that increased P and water supply increased the seed yield, shoot and root DW and P concentrations and accumulations in different organs. Cultivar ZH had a significantly higher seed yield than HD at P60 and P120 under WS and at P0 under WW, but a lower seed yield at P60 and P120 under WW. Cultivar ZH had a significantly higher P harvest index and P acquisition efficiency, but a significantly lower shoot and root DW than HD. The interaction between water treatments and P rates had significant effects on leaf and stem P concentration. Cultivar ZH had significantly lower P partitioning to leaves and stems but significantly higher P partitioning to seeds than HD. The seed yield was positively correlated with leaf and seed P accumulations and P acquisition efficiency under WS. We conclude that (1) adequate water supply improved the P mobilization from leaves and stems at maturity, which may have improved the seed yield; and (2) the high P acquisition efficiency is coordination to high P partition to seeds to produce a high seed yield under water- and P-limited conditions.

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