scholarly journals Determine yield response factor of forage corn in water stress conditions, nitroxin and nitrogen different levels (Case study: markazi province, Iran)

2015 ◽  
Vol 6 (2) ◽  
pp. 291-295
Keyword(s):  
Water Stress ◽  
Stress Conditions ◽  
Yield Response ◽  
Response Factor ◽  
Yield Response Factor ◽  
Different Levels

scholarly journals EFFECT OF WATER STRESS ON OKRA YIELD AT VEGETATIVE STAGE

Agric ◽  
2019 ◽  
Vol 30 (2) ◽  
pp. 111-116
Author(s):  
Farhan Ahmad Abdulrahman ◽  
Hawrez Ali Nadir
Keyword(s):  
Applied Sciences ◽  
Water Stress ◽  
Technical College ◽  
Dry Weight ◽  
Yield Response ◽  
Response Factor ◽  
Fresh Weight ◽  
Use Efficiency ◽  
Yield Response Factor ◽  
Different Levels

This study was conducted in Technical College of Applied Sciences, Sulaimany Polytechnic University, during 2017. Different levels of irrigation were used to production of okra plant. Complete Randomize Design used to layout of the experiment, with three level of irrigation in four replications. Yield, fresh weight of plant, dry weight of plant, yield response factor and different levels of irrigation were observed. The highest yield was given from treatment T1 (3.17 t/ha.) and the lowest was given from T3 (2.988 t/ha.). Also, the maximum fresh weight and dry weight of plant were given from T1 (61.40, 11.218 t/ha.), and their minimum was given from treatment T3 (57.00, 8.783 t/ha.). The highest water use efficiency and harvest index were obtained from T3 (1.615 kg.m-3, 0.095), and the lowest was given from treatment T1 (1.055 kg.m-3, 0.094). The crop response factor and the results in this study showed that the okra plants have a good response of water stress.  As a result, we can recommend cultivating the okra at that time without irrigation in that region. 

Yield response of a mature hedgerow oil olive orchard to different levels of water stress during pit hardening

2022 ◽  
Vol 261 ◽  
pp. 107374
Author(s):  
M. Corell ◽  
D. Pérez-López ◽  
L. Andreu ◽  
R. Recena ◽  
A. Centeno ◽  
...  
Keyword(s):  
Water Stress ◽  
Yield Response ◽  
Olive Orchard ◽  
Different Levels

scholarly journals Yield, water use efficiency, and yield response factor in carrot crop under different irrigation depths

2016 ◽  
Vol 46 (7) ◽  
pp. 1145-1150 ◽  
Author(s):  
Daniel Fonseca de Carvalho ◽  
Dionizio Honório de Oliveira Neto ◽  
Luiz Fernando Felix ◽  
José Guilherme Marinho Guerra ◽  
Conan Ayade Salvador
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Block Design ◽  
Time Domain Reflectometry ◽  
Yield Response ◽  
Response Factor ◽  
Use Efficiency ◽  
The Mean ◽  
Yield Response Factor

ABSTRACT: The aim of the present study was to evaluate the effect of different irrigation depths on the yield, water use efficiency (WUE), and yield response factor (Ky) of carrot (cv. 'Brasília') in the edaphoclimatic conditions of Baixada Fluminense, RJ, Brazil. Field trials were conducted in a Red-Yellow Argisol in the 2010-2011period. A randomized block design was used, with 5 treatments (depths) and 4 replicates. Depths were applied by drippers with different flow rates, and the irrigation was managed by time domain reflectometry (TDR) technique. The reference (ETo) and crop (ETc) evapotranspiration depths reached 286.3 and 264.1mm in 2010, and 336.0 and 329.9mm in 2011, respectively. The root yield varied from 30.4 to 68.9t ha-1 as a response to treatments without irrigation and 100% replacement of the soil water depth, respectively. Values for WUE in the carrot crop varied from 15 to 31kg m-3 and the mean Ky value was 0.82. The mean values for Kc were obtained in the initial (0.76), intermediate (1.02), and final (0.96) stages. Carrot crop was influenced by different water depths (treatments) applied, and the highest value for WUE was obtained for 63.4% of soil water replacement.

Effect of Water Stress on the Development of Soybean Crop

2019 ◽  
pp. 1-8
Author(s):  
Pedro Silvério Xavier Pereira ◽  
Rodrigo Fernandes Daros ◽  
Ana Lucia da Silva ◽  
Arnaldo Gonçalves de Campos ◽  
Aloisio Bianchini ◽  
...  
Keyword(s):  
Meteorological Data ◽  
Maximum Yield ◽  
Yield Response ◽  
Response Factor ◽  
Development Stages ◽  
Soybean Crop ◽  
Crop Cycle ◽  
Actual Yield ◽  
Yield Response Factor ◽  
Meteorological Elements

The present work had the objective of evaluating the effects of the spatial variability of the main meteorological elements on soybean yield, variety M7739 IPRO from Monsoy, with an early cycle of 105 days, with sowing at the beginning of October and harvesting at the beginning of the month in February, in two agricultural years (2013/14 and 2014/15) at Santa Luzia farm, located in the municipality of Campo Verde - MT (15º42'28 ''S, 55º19'59'' W, 736 m). The meteorological data of the region were obtained through the 9th district of meteorology (9th DISME) of the National Institute of Meteorology - INMET. The coefficient of culture (kc) was defined following the development stages of the culture. The estimates of evapotranspiration (potential and crop) were determined by the water balance method and the sensitivity coefficients (ky) of the soybean crop were estimated by the expression Ky=(1-Yr/Ym)/(1-ETr/ETm), in which ky = yield response factor; Yr = actual yield of the crop; Ym = maximum yield of the crop; ETr = actual evapotranspiration e ETm = maximum evapotranspiration. The values of Ky were all lower than 1, both for the crop cycle in the 2013/14 crop year and for the crop cycle 2014/15, indicating that the soybean crop is adaptable to water deficit.

scholarly journals Response of cowpea genotypes to water stress in temperate climatic conditions

Genetika ◽  
2016 ◽  
Vol 48 (2) ◽  
pp. 463-472
Author(s):  
Borivoj Pejic ◽  
Ksenija Mackic ◽  
Dragisa Milosev ◽  
Erkut Peksen ◽  
Srdjan Seremesic ◽  
...  
Keyword(s):  
Water Stress ◽  
Global Climate ◽  
Climatic Conditions ◽  
Cultivated Plants ◽  
Yield Response ◽  
Future Research ◽  
Cowpea Cultivars ◽  
Relative Decline ◽  
Yield Response Factor ◽  
Genotype G1

Mitigation of global climate change impact on the agricultural production is the major priorities in future research. Cowpea as a drought tolerant plant is interesting for growing in semi-arid climate of the Vojvodina region. The effect of water stress on yield of cultivated plants can be obtained by calculating the yield response factor (Ky) which represents the ratio between the relative evapotranspiration deficit (1-ETa/ETm) and the relative decline in yield (1-Ya/Ym). The values of Ky ranged from 0.91 to 1.17 for genotype G1 and G2 respectively. Genotype G1, with a value lower than 1 of Ky, shows a good tolerance to water deficit, on the contrary, genotype G2, with a greater Ky than 1, expresses some sensitivity to water stress. Obtained results will be used in breeding programs to develop cowpea cultivars tolerant to stressful conditions, primarily to water stress, as well as more productive in water use.

scholarly journals Seasonal Yield Response Factor for Red Bombay Onion (Allium cepa L.) Variety in Arba Minch, Ethiopia

2022 ◽  
Author(s):  
Ligalem Agegn Asres
Keyword(s):  
Deficit Irrigation ◽  
Irrigation System ◽  
Water Shortage ◽  
Furrow Irrigation ◽  
Yield Response ◽  
Response Factor ◽  
Irrigation Systems ◽  
Response Factors ◽  
Yield Response Factor ◽  
Alternate Furrow Irrigation

Background: For better water resources management in the areas of water shortage for crop production, deficit irrigation is very important. The understanding of the yield response factor to water deficit is crucial for efficient irrigation water management. Deficit irrigation for studying yield response factors is always practiced in the way of stressing the demand of the crops. The present study was done for the determination of the seasonal yield response factor of red Bombay onion variety under Arba Minch agro climate condition. Furthermore, it also examined the effect of furrow irrigation systems on the seasonal yield response factor. Methods: The experiment was conducted from August to November 2019. The experiment had six treatments, which were the combination of two furrow irrigation systems and three irrigation levels. Data were collected for soil moisture before and after each irrigation and bulb yield. The seasonal yield response factors were determined through simple linear regressions using SPSS software. Result: When considering the furrow irrigation system as a factor, the seasonal yield response factor for alternate furrow irrigation system was 1.18 while for paired row furrow irrigation system was 1.07. This red Bombay variety of onion clearly shows more sensitive to water stress for alternative furrow irrigation systems than paired row furrow irrigation systems. Therefore, in the area of water shortage paired row furrow irrigation system is better than alternate furrow irrigation system. The seasonal yield response factor as a wall for red Bombay onion variety in Arba Minch agro-ecological condition was 1.12. Therefore, the red Bombay onion variety in Arba Minch agroclimate condition was sensitive to water stress.

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