EFFECT OF WATER STRESS ON GROWTH AND YIELD OF SOME CUCUMBER HYBRIDS IN GREENHOUSES IN IRAQ

2020 ◽  
pp. 75-84
Keyword(s):  
Water Stress ◽  
Irrigation System ◽  
Dry Weight ◽  
Growth And Yield ◽  
Spring Season ◽  
College Of Agriculture ◽  
Autumn Season ◽  
Effect Of Water ◽  
Growing Seasons ◽  
Water Tension

A field experiment has been carried out in an unheated plastic house belonging to the Department of Horticulture and Landscaping - College of Agriculture - University of Anbar in two seasons, autumn 2018 and spring 2019 to study the effect of water tension in the production of four hybrids of cucumbers for protected cultivation, which three of them are locally produced at the College of Agriculture - University of Anbar (H2, H3, H4) compared to a hybrid approved by the Iraqi Ministry of Agriculture (H1) for determining the best gynoecious hybrids (locally production) to withstand water stress by knowing the extent of its tolerance to water stress conditions that simulate the environment of Anbar Governorate. under three levels of water tension, calculated on the basis of depletion of 30% (I1), 50% (I2) and 70% (I3) of available water, the experiment has been carried out According to Randomized completed blocks design (R, C, B and D) with three replications. The surface drip irrigation system with GR type drippers has been adopted to irrigate the experiment ground. Irrigation has been scheduled for the two growing seasons in light of the depletion rates mentioned above and calculated on the basis of the weight method. The results showed the superiority of H3 in leafy area, dry weight and number of fruits which were 110.69 dm2, 88.84 g and 45.61 fruit of plant-1 for the autumn season as compared with 117.2 dm2, 96.41g and 67.34 fruit of plant-1 in the spring season, while H1 hybrid gave highest yield in the autumn season reached 3.488 kg plant-1 while H3 hybrid gave highest yield in the spring season reached 4.782 kg Plant-1. I1 treatment exceeded the other treatments of moisture depletion in all studied properties.

scholarly journals RESPONSE OF COWPEA TO THE SPRAYING OF BORON AND CARBO LIZER ON GROWTH AND YIELD OF GREEN PODS

2016 ◽  
Vol 47 (3) ◽  
Author(s):  
Al-bayati & Hanshal
Keyword(s):  
Leaf Area ◽  
Total Yield ◽  
Control Plant ◽  
Dry Weight ◽  
Summer Season ◽  
Growth And Yield ◽  
Spring Season ◽  
College Of Agriculture ◽  
Significant Probability ◽  
Pod Number

An experiment was carried out at the vegetable fields of Horticulture and Landscaping Design Dept. , College of Agriculture / university of Baghdad / Abu Ghraib at season (2014) to study the effect of spraying boron and Carbo lizer on growth and yield of cowpea. (Ramshorn C.v.) Seeds are sown at two dates; Spring and summer date. The experiment also included the use of four concentrations of Boron (B), which were; (0, 50, 100 and 200) mg. L-1 and  three concentrations of Carbo lizer; (c) (0, 1,25 and 2,5) cm3.L-1 sprayed at three times; (30, 45 and 60) days after sowing. The experiment analysis is carried out in accordance to the experimental design RCBD and it is adopted in three replacements, and it is compared with at least L.S.D. significant probability level at 0.05.The treatment B1 show a significant  increase in leaves number (27.4 leaf.plant-1),  leaf area (212.3dm2.plant-1), dry weight for the total vagitative (43.0 g.plant-1 ), day number to flower 50% plants(47.3 days), pod number ( 42.56 pod.Plant-1), yield of green pods (127.5 gm.plant-1), total yield of green pods (6.800 ton.ha-1 ) respectively in spring season, While The treatment B3 show a significant  increase in leaves number (38.6 leaf.plant-1),  leaf area (252.9 dcm2.plant-1), dry Weight for the total vagitative (113.9 g.plant-1 ), day number to flower 50% plants(56.8 days), pod number (100.54 pod.Plant-1), yield of green pods (300.9 g .plant-1), total yield of green pods (16.084 Ton.ha-1 ) respectively in summer season , While The treatment C1 show a significant  increase in number (37.5,28.1 leaf.plant-1),  leaf area (240.1,218.2 dcm2.plant-1), pod number (98.39,40.66 pod.Plant-1), yield of green pods (287.0,122.2 g.plant-1), total yield of green pods (15.304,6.519 Ton.ha-1 ) for both seasons respectively The interaction treatment B1C1(50 mg.L-1 Boron +1.25 cm3 Carbo lizer) in spring season, and B3C1 (200mg L-1 Boron+1.25 cm3 Carbo lizer) in summer season show a significant  increase  of leaves number (30.7,40.3)leaf.plant-1,  leaf area (265.5, 258.4) dcm2.plant-1, dry weight for the total vegetative (47.7, 122.1) g.plant-1, day number to flower 50% plants(47.0,53.7)days, pod number ( 55.43,113.03) pod.Plant-1, yield of green pods (161.9, 316.3) g.plant-1, total yield of green pods (8.632, 16.871) Ton.ha-1 respectively, this is in comparison with the control plant which gave(20.0,28.3 leaf.plant-1),(143.9,182.1 dcm2.plant-1), (32,4, 80.4 g.plant-1),(48.7,59.3 days) (27.17, 70,83 pod.Plant-1), (82.2, 210.3 g.plant-1), (4.385, 11.216 Ton.ha-1)  respectively and for both dates respectively.

scholarly journals EFFECT OF ORGANIC FERTILIZER EXTRACT ( X – HUMATE 85 ) AND APPLICATION METHOD ON GROWTH AND YIELD OF APRICOT TREES LABEEB-1 CV.

2017 ◽  
Vol 48 (4) ◽  
Author(s):  
Kadhim & et al.
Keyword(s):  
Foliar Application ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Growth And Yield ◽  
High Concentration ◽  
College Of Agriculture ◽  
Growing Seasons ◽  
Randomized Complete Block Design ◽  
High Level

This rsearch was conducted on apricot trees cv. Labeeb at the college of Agriculture – University of  Baghdad/ Abu Gharib during the growing seasons 2013 and 2014, to investigate the effect of organic fertilizer extract and the method of  application on growth and yield parameters, the extract was applied in the biggning of spring by two ways the first foliar application with three concentrations 1, 2 and 3 g.L-1 and second ground application 2, 4 and 6 g.L-1. The experiment were designed using Randomized Complete Block Design (R.C.B.D) and Genstat program for statistical analysis. Results of the first season showed that the foliar spraying with high concentration gave highest values for branches length, leaf area and fruit set percentage (12.39 cm), (20.86 cm2) and (10.62%)respectively, while the ground application superior in the high level by gaving leaves dry weight was 45.64%, but the results completely differed in the second season. The foliar spraying with higher concentration caused high content of chlorophyll in the leaves during both seasons (28.68) and (31.22) SPAD unit respectively, while applying of extract in the soil with high level showed highest yield quantity (16.957 and 18.207 kg.tree-1) respectively for both seasons. Ground application was the best method for fertilization with X-Humate85 extract.

A, The ESTIMATION OF ECONOMIC THRESHOLDS OF JUNGLE RICE (ECHINOCHLOA COLONA L.) AND FALSE AMARANTH (DIGERA ARVENSIS FORSSK.) IN DIRECT SEEDED RICE

2020 ◽  
Vol 27 (2) ◽  
pp. 507-523
Author(s):  
Amir Ehsan ◽  
Muhammad Ehsan Safdar1 ◽  
Amjed Ali
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Field Trials ◽  
Research Area ◽  
Growth And Yield ◽  
Rice Grain ◽  
College Of Agriculture ◽  
Competitive Index ◽  
Economic Thresholds ◽  
Direct Seeded

ABSTRACT There is little understanding about ecological interference of weeds in direct-seeded rice. To get estimates of economic thresholds of two weeds in direct seeded rice, two-year field trials were conducted at research area of College of Agriculture, University of Sargodha, Punjab-Pakistan. Treatments included 0, 22, 44, 66 and 88 plants m-2 densities of each of Echinochloa colona and Digera arvensis laid out in randomized complete block design. Augmented densities of E. colona (0, 22, 44, 66 and 88 weed plants m-2) enhanced its plant dry biomass up to 348 and 353%; and relative competitive index maximally to 80 and 77% in years 2015 and 2016, respectively. While the corresponding increases in plant dry weight and relative competitive index of D. arvensis were 367 and 360% and 79 and 82%. The enhancement in N (up to 258 & 257 %), P (up to 220 & 232%) and K (up to 293 & 301%) uptake in years 2015 and 2016, respectively were made by E. Colona whereas the corresponding increases in N, P and K assimilation by D. arvensis were as far as 265 & 257%, 238 & 233% and 305 & 298%, respectively. The declines in growth and yield of rice were observed in response to growing number of both the weeds. Rice grain yield losses ranged between 9.8 to 80% and 28 to 80% by E. Colona and D. arvensis. The economic thresholds of false amaranth and jungle rice were estimated to be 1.6-1.4 plants m-2 and 2.2-2.6 plants m-2, respectively.

scholarly journals The Effect of Water Stress on Translocation in Relation to Photosynthesis and Growth

1969 ◽  
Vol 22 (1) ◽  
pp. 1 ◽  
Author(s):  
IF Wardlaw
Keyword(s):  
Water Stress ◽  
Photosynthetic Rate ◽  
Dry Weight ◽  
Water Shortage ◽  
Weight Changes ◽  
Root Extension ◽  
Effect Of Water

Photosynthetic rate, leaf and root extension, dry weight changes, and the translocation of labelled photosynthates were followed in L. temulentum plants subjected to water shortage at a time when the eighth leaf was expanding.

Effect of Mulching on Chickpea under Low Head Drip Irrigation System

2019 ◽  
Author(s):  
K. V.R. Rao ◽  
Pushplata Aherwar ◽  
Suchi Gangwar ◽  
Deepika Yadav
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Dry Weight ◽  
Growth And Yield ◽  
Water Tank ◽  
Drip Irrigation System ◽  
Plastic Mulch ◽  
Net Returns ◽  
Yield Parameters ◽  
Low Head

The effect of plastic mulch on chickpea (Cicer arietinum L.) cultivation under low head drip irrigation systems was studied at ICAR-Central Institute of Agricultural Engineering, PFDC, Bhopal during 2018-19. Drip irrigation system was operated by placing water tank at a total water deliver height of 3 m and varied heads to 2.5 m and 2.0 m to find out the value of coefficient of uniformity under these heads. The experimental treatments consisted in five levels by varying irrigation methods: Flood irrigation, irrigation with drip laid on raised beds, irrigation with drip laid on raised beds covered with black mulch, irrigation with drip laid on raised beds covered with silver mulch and irrigation with drip laid on raised beds covered with white mulch. Growth and yield parameters of chickpea viz., plant height (cm), number of branches per plant, plant dry matter (g/plant), effective nodule per plant and nodules dry weight (mg/plant), number of pods per plant, 100 seed weight, seed yield (kg/ha) and harvest index were highest under silver plastic mulch laid on raised beds, irrigated with drip as compared to black plastic mulch and white plastic mulch treatments. Lowest growth and yield parameters were recorded in the flood irrigated treatment. Water Use Efficiency was highest under silver plastic mulch (17.21kg/ha mm) and lowest under flood irrigated condition (3.74 kg/ha mm). Net returns were higher in the treatment under the silver mulch (Rs/ha 77939) and followed by black mulch (Rs/ha 67179) with lowest net returns in the flood irrigated condition (Rs/ha 32690).

Effect of water stress on growth, water use efficiency and gas exchange as related to osmotic adjustment of two halophytes Atriplex spp.

2013 ◽  
Vol 40 (5) ◽  
pp. 466 ◽  
Author(s):  
Oumelkheir Belkheiri ◽  
Maurizio Mulas
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Osmotic Adjustment ◽  
Late Summer ◽  
Field Capacity ◽  
Dry Weight ◽  
Co2 Assimilation ◽  
Effect Of Water ◽  
Use Efficiency

Atriplex halimus L. is known in the Mediterranean basin and along the coastal areas of Sardinia for its adaptability to salinity, although less information is available on the resistance of this species to water stress in absence of salinity. The effect of water stress on growth and water utilisation was investigated in two Atriplex species: A. halimus originating of south Sardinian island and the exotic species Atriplex nummularia Lindl., originating in Australia and widely used in land restoration of arid areas. Water stress was applied to young plants growing in 20 L pots with a sufficient water reserve to store a potentially sufficient water reserve to maintain substrate near to field capacity (30%) between irrigations. Watering was at 70% (control) or 40% (stress) of field capacity. In order to simulate the grazing by livestock, four plant biomass cuttings were conducted at times T0, T1, T2 and T3, corresponding to one cutting at the end of well watered phase (T0) before water stress induction, two cuttings after cycles of 5 weeks each during full summer (T1) and late summer (T2) and one cutting during autumn (T3). All plants remained alive until the end of treatment although growth was strongly reduced. Leaf dry weight (DW) and water use efficiency (WUE) were determined for all cuttings; relative water content (RWC), turgid weight : dry weight ratio (TW : DW), water potential (Ψw), osmotic potential (Ψs), CO2 assimilation, osmotic adjustment (OA), abscisic acid (ABA) and sugar accumulation were determined for the late summer cutting at T2. Water stress induced a decrease in DW, RWC, Ψw, Ψs, TW : DW and CO2 assimilation for both species, but an increase in WUE expressed in terms of dry matter production and a high accumulation of ABA and total sugars mainly for A. halimus. This suggests a more developed adaptive mechanism in this selection. Indeed, the clone was selected from the southern part of the island, where natural populations of saltbush are more exposed to abiotic stresses, mainly the water stress generated not by salinity. A. nummularia showed a greater OA and a positive net solute accumulation as than A. halimus, suggesting that water stress resistance in A. halimus is linked to a higher WUE rather than a greater osmotic adjustment.

scholarly journals EFEK NAUNGAN DAN CEKAMAN AIR TERHADAP PERTUMBUHAN DAN HASIL KUNYIT DI KISMANTORO, WONOGIRI

2015 ◽  
Vol 30 (1) ◽  
pp. 1 ◽  
Author(s):  
Anindita Dwi Yogi Sapta Ratri ◽  
Bambang Pujiasmanto ◽  
Ahmad Yunus
Keyword(s):  
Abiotic Stress ◽  
Water Stress ◽  
Secondary Metabolites ◽  
Medicinal Plant ◽  
Field Capacity ◽  
Dry Weight ◽  
Growth And Yield ◽  
Capacity Analysis ◽  
Nested Design ◽  
Two Factors

<p><em>Turmeric is a medicinal plant that has largest secondary metabolites (curcumin). Improving secondary metabolites with abiotic stress that the provision of shade and water stress. This research aims to study the effects of shade and water stress on growth and yield of turmeric and content of secondary metabolites. The study uses a nested design with two factors, namely shade (without shade, 25%, 50%, 75%) and water stress (without stress, 25% field capacity, 50% field capacity, 25% field capacity). Analysis using the F test and DMRT 5% level. The results showed that shade did not effect to fresh and dry weight of plant. 75% shade decrease root lenght, fresh and dry weight of rhizome. Water stress did not effect to growth and yield of turmeric. The highest curcumin results in conditions without shade and without stress.</em></p>

scholarly journals Effect of Water Stress on the Growth and Yield of Cotton Crop (<i>Gossypium hirsutum</i> L.)

2015 ◽  
Vol 06 (07) ◽  
pp. 1027-1039 ◽  
Author(s):  
Arbab Sahito ◽  
Zulfiqar Ali Baloch ◽  
Amanullah Mahar ◽  
Sohail Ahmed Otho ◽  
Shahmir Ali Kalhoro ◽  
...  
Keyword(s):  
Water Stress ◽  
Gossypium Hirsutum ◽  
Growth And Yield ◽  
Cotton Crop ◽  
Effect Of Water

scholarly journals Effect of Water Stress Through Skipped Irrigation on Growth and Yield of Wheat

2021 ◽  
Author(s):  
Faysal Khan ◽  
Sami Khan ◽  
Ali Gurmani ◽  
Ayub Khan ◽  
Shahzad Ahmed ◽  
...  
Keyword(s):  
Water Stress ◽  
Growth And Yield ◽  
Effect Of Water
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