scholarly journals Interactive Effects of Soil Salinity and Temperature on Vegetative Growth of Rice after Flooded by TSUNAMI 11 March 2011

2012 ◽  
Vol 81 (4) ◽  
pp. 441-448
Author(s):  
Hiroyuki Shimono ◽  
Etsushi Kumagai ◽  
Noboru Kiminarita ◽  
Miho Ito ◽  
Yoshinori Takahashi ◽  
...  
Keyword(s):  
Soil Salinity ◽  
Vegetative Growth ◽  
Interactive Effects

scholarly journals Long-term Effects of Restricted Root Volume and Regulated Deficit Irrigation on Peach: I. Growth and Mineral Nutrition

2000 ◽  
Vol 125 (1) ◽  
pp. 135-142 ◽  
Author(s):  
A.M. Boland ◽  
P.H. Jerie ◽  
P.D. Mitchell ◽  
I. Goodwin ◽  
D.J. Connor
Keyword(s):  
Mineral Nutrition ◽  
Vegetative Growth ◽  
Deficit Irrigation ◽  
Prunus Persica ◽  
Root Length Density ◽  
Interactive Effects ◽  
Long Term Effects ◽  
Root Volume ◽  
Regulated Deficit Irrigation ◽  
Soil Volume

Individual and interactive effects of restricted root volume (RRV) and regulated deficit irrigation (RDI) on vegetative growth and mineral nutrition of peach trees [Prunus persica (L.) Batsch (Peach Group) `Golden Queen'] were studied over 3 years (1992-95). Trees were grown in lysimeters of five different volumes (0.025, 0.06, 0.15, 0.4, and 1.0 m3) with either full or deficit (RDI) irrigation. Increasing soil volume increased vegetative growth as measured by trunk cross-sectional area (TCA) (linear and quadratic, P < 0.011) and tree weight (linear, P < 0.001) with the final TCA ranging from 29.0 to 51.0 cm2 and tree weight ranging from 7.2 to 12.1 kg for the smallest to largest volumes. Root density measured at the completion of the experiment decreased with increasing soil volume (linear and quadratic, P < 0.001) with root length density declining from 24.0 to 2.0 cm·cm-3. RDI reduced vegetative growth by up to 70% as measured by weight of summer prunings. Root restriction was effective in controlling vegetative vigor and is a viable alternative for control of vegetative growth. Mineral nutrition did not limit tree growth.

scholarly journals Salt tolerance of precocious-dwarf cashew rootstocks: physiological and growth indexes

2004 ◽  
Vol 61 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Paulo Torres Carneiro ◽  
Pedro Dantas Fernandes ◽  
Hans Raj Gheyi ◽  
Frederico Antônio Loureiro Soares ◽  
Sergio Batista Assis Viana
Keyword(s):  
Leaf Area ◽  
Soil Salinity ◽  
Dry Weight ◽  
Interactive Effects ◽  
Relative Growth Rates ◽  
Root Shoot Ratio ◽  
Salinity Levels ◽  
Physiological Indexes ◽  
Net Assimilation ◽  
Social Importance

The cashew crop (Anacardium occiedentale L.) is of great economic and social importance for Northeast Brazil, a region usually affected by water and soil salinity. The present study was conducted in a greenhouse to evaluate the effects of four salinity levels established through electrical conductivity of irrigation water (ECw: 0.7, 1.4, 2.1 and 2.8 dS m-1, at 25ºC), on growth and physiological indexes of five rootstocks of dwarf-precocious cashew varieties CCP06, CCP09, CCP1001, EMBRAPA50, and EMBRAPA51. Plant height, leaf area, dry weight of root, shoot and total; water content of leaves, root/shoot ratio, leaf area ratio, absolute and relative growth rates and rate of net assimilation were evaluated. The majority of the evaluated variables were found to be affected by ECw and the effects varied among clones; however, no significant interactive effects were observed for factors. The value of ECw = 1.39 dS m-1 was considered as a threshold tolerance for the precocious cashew rootstocks used in this study. The dwarf-precocious cashew is moderately sensible to soil salinity during the formation phase of rootstock. Clones EMBRAPA51 and EMBRAPA50 presented, respectively, the least and the best development indexes.

scholarly journals THE EFFECT OF COVER CROP AND SOIL SOLARIZATION ON TURNIP GREEN YIELD AND NUTRIENT MINERALIZATION

HortScience ◽  
1990 ◽  
Vol 25 (8) ◽  
pp. 861c-861
Author(s):  
D. R. Earhart ◽  
V. A. Haby ◽  
A. T. Leonard ◽  
J. V. Davis
Keyword(s):  
Soil Salinity ◽  
Cover Crop ◽  
Soil Analysis ◽  
Interactive Effect ◽  
Linear Increase ◽  
Interactive Effects ◽  
Soil Solarization ◽  
N Application ◽  
Nutrient Mineralization ◽  
Application Rates

Soil solarization following previous N application rates of 0, 56, 112, 168 and 224 kg·ha-1 as ammonium nitrate, and one cover crop of-sorghum-sudah (Sorghum bicolor var.) increased yields of turnip foliage (greens) by 3066 kg·ha-1 over the non-solarized treatment. Greater yield was obtained with 56 kg·ha-1 less N with solarization than non-solarization (112 vs 168 kg·ha-1). A blanket N application of 22 kg·ha-1 ameliorated the solarization effect on the 2nd harvest. Solarization had no significant effect on turnip leaf element concentration. Linear and quadratic increases in leaf N occurred as soil N increased. There was also a linear increase in tissue K and Mg due to solarization. No interactive effects were noted. Soil analysis showed salinity (EC) decreased and Ca increased with solarization. An increase in N rates decreased pH, NO3, and Mg, and increased soil salinity and NH4. Solarization had an interactive effect on soil salinity by increasing EC at 0 N and decreasing at 56 to 168 kg N·ha-1.

scholarly journals Flowering of Eustoma grandiflorum (Raf.) Shinn. Cultivars Influenced by Photoperiod and Temperature

HortScience ◽  
1995 ◽  
Vol 30 (7) ◽  
pp. 1375-1377 ◽  
Author(s):  
Brent K. Harbaugh
Keyword(s):  
Seedling Growth ◽  
Vegetative Growth ◽  
Flowering Plants ◽  
Interactive Effects ◽  
Flower Buds ◽  
Eustoma Grandiflorum ◽  
Flowering Response ◽  
Short Days

Seedling growth and flowering responses were examined for four Eustoma cultivars exposed to photoperiod × temperature treatments during two seedling ages. Seedlings were grown under short days (SD, 12-hour photoperiod) or long days (LD, 18-hour photoperiod) in soil at 12 or 28C from 14 to 43 days after sowing. Seedlings from each treatment were then subdivided into four lots and subjected to the same photoperiod × temperature treatments from 43 to 79 days after sowing, for a total of 16 treatments. To determine flowering response, seedlings were grown subsequently for 120 days at 22C under the same photoperiod that they received from day 43 to 79. For all cultivars and both seedling ages, seedlings were larger and had more leaves when grown at 28C rather than at 12C, but the tallest plants at flowering were from seedlings exposed to 12C. Seedlings from some treatments bolted but did not initiate visible flower buds, and some seedlings developed visible buds that later aborted, resulting in plants that did not flower by the termination of the experiment (199 days). Cultivar and interactive effects of photoperiod and temperature influenced the percentage of flowering plants. Vegetative growth and flowering responses were similar for `Yodel White', `Heidi Pink', and `Blue Lisa'. They flowered as LD plants when seedlings were grown at 12C from day 14 to 43 or day 43 to 79. Seedlings of these cultivars that were grown under SD at 28C from day 43 to 79 did not flower, regardless of photoperiod or temperature treatments from day 14 to 43. However, SD photoperiod or 28C did not decrease flowering for `GCREC-Blue'.

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