Photosynthetic Performance of Potato (Solanum tuberosum) Subject to Water Deficit Regulated with Mulched Drip Irrigation

2013 ◽  
Vol 405-408 ◽  
pp. 2130-2133 ◽  
Author(s):  
Heng Jia Zhang ◽  
Jing Li
Keyword(s):  
Leaf Area ◽  
Water Deficit ◽  
Drip Irrigation ◽  
Dry Matter ◽  
Growth Stages ◽  
Soil Water Deficit ◽  
Area Index ◽  
Relative Growth ◽  
Leaf Area Duration ◽  
Mulched Drip Irrigation

An experiment was carried out to determine the effect of mulched drip irrigation under water deficit on leaf area index (LAI), leaf area duration (LAD), dry matter (DM) and relative growth rate (RGR) of potato in an arid environment. Five water deficit treatments and a full irrigation control were established to subject potato to various levels of soil water deficit at different crop growth stages. The result indicated that potato LAI and LAD at all the determined growth stages were not reduced under water deficit regulation. Additionally, the DM and RGR at starch accumulation were not significantly decreased under water deficit either. Therefore, medium soil water deficit regulated at 55%~65% of field capacity with mulched drip irrigation at potato tuber initiation could be used to effectively improve leaf area index, leaf area duration, dry matter and relative growth rate of plants.

Plant Growth of Processing Tomato （Solanum lycopersicum) Subjected to Water Deficit Regulated with Mulched Drip Irrigation

2013 ◽  
Vol 838-841 ◽  
pp. 2366-2369 ◽  
Author(s):  
Ai Cun Wen ◽  
Heng Jia Zhang
Keyword(s):  
Plant Growth ◽  
Water Deficit ◽  
Drip Irrigation ◽  
Dry Matter ◽  
Growth Stages ◽  
Dry Matter Accumulation ◽  
Area Index ◽  
Processing Tomato ◽  
Effect Of Water ◽  
Mulched Drip Irrigation

An experiment was carried out to determine the effect of water deficit regulated with mulched drip irrigation on plant growth of processing tomato in an arid environment. The results indicated that Water deficit had little effect on plant height of processing tomato at full fruiting and late fruiting except that at seedling and flowering. Still, no effect of water deficit regulation on stem diameter was found at all measured growth stages. However, leaf area index and dry matter was significantly (p<0.05) reduced at all growth stages of tomato subjected to high water deficit at seedling. Therefore, low level of water deficit at seedling while free of deficit from flowering to late fruiting as well as proper levels of water deficit at flowering or full fruiting or late fruiting while free of deficit at seedling could be used to effectively regulate leaf growth and dry matter accumulation of processing tomato in arid areas.

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.

Leaf area and transpiration efficiency during different growth stages in oats

1991 ◽  
Vol 116 (2) ◽  
pp. 183-190 ◽  
Author(s):  
W. Ehlers
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Field Experiments ◽  
Potential Evapotranspiration ◽  
Rain Water ◽  
Growth Stages ◽  
Transpiration Efficiency ◽  
Area Index ◽  
Leaf Area Duration ◽  
It Efficiency

SUMMARYDry matter production, transpiration and transpiration efficiency (DM production: transpiration) were studied during vegetative growth of oats over 4 years (1976–77 and 1982–83) in field experiments on loess-derived soils near Gottingen, Germany, under different weather conditions. Shoot and root dry matter and leaf area were measured or estimated regularly during the season. The rate of evapotranspiration including intercepted rain water by leaves (ET) was determined during five consecutive growth stages from the water balance in the 2 m soil profile. The rate of soil evaporation (E) and the rate at which rain water was intercepted by leaves (I) were estimated separately in order to attain T, the transpiration rate (T = ET–E–I), or IT, the rate of interception of rain water by leaves plus transpiration (IT = ET–E). The potential evapotranspiration rate (ETp) was derived from meteorological parameters.During the early stages of oat development (seedling growth and tillering), T and IT, related to ETp, were higher than expected from crop growth rate (CGR), calculated for shoot and total dry matter including roots, respectively. It was concluded that, at a leaf area index (LAI) of < 3·4, part of the solar radiation was converted to sensible heat between plant rows, increasing ETp near the ground and hence T, but not CGR. Because of this, LAI influenced IT efficiency and the crop-specific constant m of de Wit's formula. IT efficiency was not only dependent on LAI but also on ETp. Grain yield was related to both cumulative IT (ITC), normalized by ET, and leaf area duration during the period from anthesis to harvest. Increased leaf area duration after anthesis may partly explain the higher yields obtained with modern high-yielding varieties of small-grained cereals.

scholarly journals Effects of Gibberellic Acid (Ga3) on Growth and Yield Parameters of French Bean (Phaseolus Vulgaris L.)

2017 ◽  
Vol 43 (1) ◽  
pp. 49-60
Author(s):  
Ferdowsi Noor ◽  
Feroza Hossain ◽  
Umme Ara
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Matter ◽  
Growth Parameters ◽  
French Bean ◽  
Research Field ◽  
Growth And Yield ◽  
Growth Stages ◽  
Area Index ◽  
Net Assimilation

A field study was conducted during the Rabi season of 2009-2010 in the research field of Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka. Six levels of GA3, viz. 0, 30, 50, 70, 90 and 110 ppm were sprayed at 18 days after sowing (DAS). GA3 treatments significantly increased plant height than the control plants. GA3 with 30 to 90 ppm significantly increased number of branches and leaves, leaf area, leaf area index (LAI), leaf dry matter and total dry matter at different growth stages. GA3 at 30 to 70 ppm gradually increased crop growth rate (CGR), net assimilation rate (NAR) and relative growth rate (RGR) and declined advanced growth stages. Number of dry pods /plant, number of seeds /pod, 1000 seed weight, fresh fodder, fresh pod, dry seed yield and harvest index also significantly increased. Positive significant correlations were found among growth parameters and as well as yield contributing characters. Asiat. Soc. Bangladesh, Sci. 43(1): 49-60, June 2017

Banana plant growth. 2. Dry matter production, leaf area and growth analysis

1972 ◽  
Vol 12 (55) ◽  
pp. 216 ◽  
Author(s):  
DW Turner
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Dry Matter ◽  
Early Summer ◽  
Growth Stages ◽  
Assimilation Rate ◽  
Banana Plant ◽  
Area Index ◽  
Net Assimilation ◽  
Plant Crop

The quantitative aspects of banana plant growth (omitting roots) at Alstonville, New South Wales, are described. Dry matter distribution, leaf area index (L), net assimilation rate (E), leaf area ratio (F) and relative growth rates (R), were measured. For a spring planting, only 1695 kg ha-l dry matter were produced in the first twelve months but 6780 kg were produced in the first half of the second year as the bunch and first ratoon crop developed. The plant crop was characterized by early leaf growth (high F) whereas in the ratoon crops, corm growth was a feature of early growth stages. Leaf area index was less than 1 for the first twelve months but reached 5 after 18 months. Plants were 3.1 m X 1.9 m apart. Net assimilation rate was affected by internal and external factors. The main internal control was the growth of suckers, which tended to increase E. Removal of the suckers in autumn or winter caused a sudden drop i i ~ E and absolute growth rate but when they were removed in early summer E was increased. The external controls affecting E were solar radiation, temperature and soil moisture, although the amount of variation explained in correlations was low. - R appeared to be constant in the plant crop within morphologically defined growth stages. This was not so in moon crops and R was probably a resultant of ontogenetic and climatic drifts. Desuckering in autumn and winter decreased R. Early summer desuckering increased R.

scholarly journals Growth Response of Greenhouse-Produced Muskmelon and Tomato to Sub-Surface Drip Irrigation and Soil Aeration Management Factors

2019 ◽  
Author(s):  
Yuan Li ◽  
Wenquan Niu ◽  
Xiaoshu Cao ◽  
Mingzhi Zhang ◽  
Jingwei Wang ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Drip Irrigation ◽  
Dry Matter ◽  
Growth Response ◽  
Fruit Yield ◽  
Fractional Factorial ◽  
Area Index ◽  
Soil Aeration ◽  
Surface Drip Irrigation

Abstract Background: Hypoxia causes injury and yield loss. Soil aeration has been reported to accelerate the growth of plants and increase crop yield. The aim of this study was to examine growth response of greenhouse-produced muskmelon to 3 levels of sub-surface drip irrigation (I), 3 different installation depths of drip laterals in the soil (D), and 4 levels of supplemental soil aeration frequency (A). A fractional factorial experiment was designed to examine these treatment effects on marketable fresh fruit yield, leaf area index during 3 growth stages, and dry matter partitioning at harvest. In addition, we studied the response of fruit yield and dry matter of tomato to 2 levels of burial depths of subsurface tubing in combination with 3 frequency levels of soil aeration. Results: Results showed that soil aeration can positively influence the yield, leaf area index, dry matter and irrigation use efficiency of the muskmelon (p<0.05). The fruit yield of muskmelon and tomato were increased by 21.5% and 30.8% respectively with 1-d and 2-d aeration intervals compared with the no aeration treatment. Conclusions: The results suggest that soil aeration can positively impact the plant root zone environment and more benefits can be obtained with aeration for both muskmelon and tomato plants.

scholarly journals DIEBACK, LEAF AREA INDEX AND YIELD OF YOUNG EUCALYPT CLONES PLANTATION IN THE BRAZILIAN SAVANNAH REGION

2018 ◽  
Vol 41 (3) ◽  
Author(s):  
Geraldo Gonçalves dos Reis ◽  
Frederico de Freitas Alves ◽  
Maria das Graças Ferreira Reis ◽  
Felippe Coelho de Souza ◽  
Diogo Sena Baiero ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Soil Water ◽  
Leaf Area ◽  
Water Deficit ◽  
Tree Height ◽  
Low Fertility ◽  
Limiting Factor ◽  
Soil Water Deficit ◽  
Area Index ◽  
Brazilian Savannah

ABSTRACT Eucalypt has been widely planted in Brazil, in the savannah region, which is characterized by high soil water deficit and low fertility. Dieback, leaf area index (LAI) and yield of young stands of 16 eucalypt clones were studied in Vazante, MG, Brazil (17º36’09"S and 46º 42’02"W). It was determined for each clone: a) the proportion of the tree height with dieback symptoms in the apical terminal (HWD%) and the proportion of trees with dieback (NWD%), at 13 months (end of the first dry season); b) the LAI at 13 and 21 months, and c) the yield at the age of 13, 19 and 25 months. HWD% reached 5-9%, and NWD%, 50-80%, for the five most susceptible clones, when the soil water deficit reached 508 mm in the year. LAI varied from 0.61 to 1.56, at 13 months, and from 2.31 to 3.48 at 21 months, presenting inverse relationship with dieback. The least susceptible clones to dieback achieved the highest yield up to 25 months of age. There was interaction between dieback and fertilizer levels only for three clones. There was a positive correlation (p < 0.001) between the LAI at the age of 13 months and the periodic monthly increment from 0 to 11 months, and from 11 to 19 months. The difference in dieback susceptibility among clones allows the selection of genotypes for regions where the soil water deficit is a major limiting factor.

scholarly journals Growth Response of Greenhouse-Produced Muskmelon and Tomato to Sub-Surface Drip Irrigation and Soil Aeration Management Factors

2020 ◽  
Author(s):  
Yuan Li ◽  
Wenquan Niu ◽  
Xiaoshu Cao ◽  
Mingzhi Zhang ◽  
Jingwei Wang ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Drip Irrigation ◽  
Dry Matter ◽  
Growth Response ◽  
Fruit Yield ◽  
Fractional Factorial ◽  
Area Index ◽  
Soil Aeration ◽  
Surface Drip Irrigation

Abstract Background: Hypoxia causes injury and yield loss. Soil aeration has been reported to accelerate the growth of plants and increase crop yield. The aim of this study was to examine growth response of greenhouse-produced muskmelon to 3 levels of sub-surface drip irrigation (I), 3 different installation depths of drip laterals in the soil (D), and 4 levels of supplemental soil aeration frequency (A). A fractional factorial experiment was designed to examine these treatment effects on marketable fresh fruit yield, leaf area index during 3 growth stages, and dry matter partitioning at harvest. In addition, we studied the response of fruit yield and dry matter of tomato to 2 levels of burial depths of subsurface tubing in combination with 3 frequency levels of soil aeration. Results: Results showed that soil aeration can positively influence the yield, leaf area index, dry matter and irrigation use efficiency of the muskmelon (p<0.05). The fruit yield of muskmelon and tomato were increased by 21.5% and 30.8% respectively with 1-d and 2-d aeration intervals compared with the no aeration treatment. Conclusions: The results suggest that soil aeration can positively impact the plant root zone environment and more benefits can be obtained with aeration for both muskmelon and tomato plants.

scholarly journals Evaluation of Suitable Mixture of Water and Air for Processing Tomato in Drip Irrigation in Xinjiang Oasis

2021 ◽  
Vol 13 (14) ◽  
pp. 7845
Author(s):  
Chilin Wei ◽  
Yan Zhu ◽  
Jinzhu Zhang ◽  
Zhenhua Wang
Keyword(s):  
Vitamin C ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Height ◽  
Drip Irrigation ◽  
Stem Diameter ◽  
Soluble Solids ◽  
Area Index ◽  
Processing Tomatoes ◽  
Mulched Drip Irrigation

Aerated irrigation (AI) has emerged as a method to mitigate rhizosphere hypoxia caused by wetting front with sub-surface drip irrigation (SDI). Increasing oxygen in processing tomato’s root zone is beneficial to the improvement of the rhizosphere gas environment, crop growth, yield and quality. The relationship between aerated irrigation and irrigation quantity is not clear. A total of eight treatments, including four irrigation levels (4950 m3 hm−2 (W1), 4750 m3 hm−2 (W2), 4500 m3 hm−2 (W3), 4050 m3 hm−2 (W4)) in combination with aerated irrigation (A2) and non-aerated irrigation (A1) were used to investigate the effects of aerated irrigation on the physiological characteristics and yield of processing tomatoes under mulched drip irrigation in Xinjiang, China. The effects of aerated irrigation on plant height, stem diameter, leaf area index and dry matter, photosynthesis, fluorescence, fruit quality and yield of processing tomatoes were studied. The results showed that plant height, stem diameter, biomass accumulation and leaf area index of processing tomatoes under aerated irrigation were increased by 10.2%, 7.3%, 12.5% and 6.2% under the W1, W2, W3 and W4 conditions (p < 0.05), respectively, compared with non-aerated irrigation. Yield and the content of Vitamin C and soluble solids under aerated irrigation was 9.71%, 5.59% and 5.68% (p < 0.05) higher than that under conventional irrigation, respectively, and the sugar-acid under aerated irrigation decreased by 0.5%. Through principal component analysis, W2A2 treatment had a higher score according to the yield index (per fruit weight, fruit number per plant) and quality index (Vitamin C, soluble solids, sugar-acid ratio) than the other treatments. The results show that aerated irrigation is feasible under the existing mulched drip irrigation in Xinjiang and, in this experiment, W2A2 treatment was the most suitable planting mode.

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