Effect of Moisture Regimes on Ion Sorption in Old Brahmaputra Floodplain Soil

2000 ◽  
Vol 3 (8) ◽  
pp. 1267-1269
Author(s):  
R. Khanom ◽  
M. J. Abedin Mian ◽  
M. M. Rahman ◽  
M. R. Islam
2008 ◽  
Vol 28 ◽  
pp. S14-S20 ◽  
Author(s):  
Ma.C. Hernández-Berriel ◽  
L. Márquez-Benavides ◽  
D.J. González-Pérez ◽  
O. Buenrostro-Delgado

2012 ◽  
Vol 9 (2) ◽  
pp. 205-210 ◽  
Author(s):  
MR Debnath ◽  
M Jahiruddin ◽  
MM Rahman ◽  
MA Haque

The effect of different rates of boron application on wheat cv. Bijoy was studied through a field experiment at    Bangladesh Agricultural University (BAU) farm, Mymensingh during 2009-10 rabi season. The BAU farm belongs to    Old Brahmaputra Floodplain agroecological zone (AEZ 9). Texturally the soil was silt loam, with 7.2 pH, 0.81%    organic matter and 0.15 mg kg-1 available boron content. The experiment was laid out in a randomized complete    block design with five boron rates and four replications. Boron rates were 0, 0.75, 1.5, 2.25 and 3.0 kg ha-1, with boric    acid as a source. Every plot received blanket doses of 115 kg N, 25 kg P, 75 kg K and 15 kg S ha-1 from urea, TSP,    MoP and gypsum, respectively. Treatment receiving B @ 2.25 kg ha-1 produced the highest grain yield (4.22 t ha-1) which was statistically identical with that obtained with 1.75 kg B ha-1. However, the crop response curve showed    1.90 kg ha-1 to be the optimum boron rate for the maximization of wheat yield. The lowest grain yield (2.84 t/ha) was    recorded with control treatment. There was a positive relationship between grain yield and number of grains spike-1.   Boron had significant influence on N, P, K, S and B uptake by the crop which, in deed, was more influenced by crop    yield and less by nutrient concentration, except N and B uptake where concentration had more influence than yield.   DOI: http://dx.doi.org/10.3329/jbau.v9i2.10987   J. Bangladesh Agril. Univ. 9(2): 205–210, 2011


Weed Science ◽  
1983 ◽  
Vol 31 (5) ◽  
pp. 674-680 ◽  
Author(s):  
Thomas C. Lauridson ◽  
Robert G. Wilson ◽  
Lloyd C. Haderlie

Laboratory experiments were conducted to determine the effect of moisture stress on the absorption and translocation of14C-labeled picloram (4-amino-3,5,6-trichloropicolinic acid), dicamba (3,6-dichloro-o-anisic acid), and glyphosate [N-(phosphonomethyl)glycine] within the Canada thistle [Cirsium arvense(L.) Scop. # CIRAR] plants. The absorption and translocation of picloram and dicamba were unaffected by moisture stress. Absorption and translocation of glyphosate to the roots and apical meristem of Canada thistle was reduced by increasing moisture stress. Weekly differential irrigation of Canada thistle field plots during the summers of 1980 and 1981 established three soil moisture regimes averaging −6.6, −11.3, and −15.0 bars at the time of herbicide treatment. When Canada thistle control was evaluated 1 year after application of glyphosate, dicamba, and picloram at 2.5, 1.1, and 0.6 kg/ha, respectively, no differences in Canada thistle shoot control were found between moisture stress treatments.


2015 ◽  
Vol 12 (2) ◽  
pp. 123-133
Author(s):  
MR Islam ◽  
H Afroz ◽  
R Pervin ◽  
F Ansari ◽  
MH Rahman

Field experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BINA) farm, Mymensingh during 2010-11 to 2011-12 to investigate the effect of different levels of K on Boro-Fallow-T. Aman cropping pattern in Old Brahmaputra Floodplain Soil of Bangladesh. There were four treatments for the first crop (Boro rice): T1 (Control), T2 (50% NPKS), T3 (75%NPKS) and T4 (100% NPKS). The 100% NPKS rates were recommended on the basis of soil test values. T4 treated plot of each block was further split into seven sub-plots to represent seven treatments (T4.1 to T4.7) for the second crop of T. Aman in the sequence. The results reveal that the grain yield of boro rice varied from 2.33 to 6.00 t ha-1 of which the highest yield was recorded with the application of 100% NPKS (T4) and the lowest with T1 (control). The effect of boro rice straw removal or incorporation was clearly visible on the following crop, T. Aman rice. The highest grain and straw yields of T. Aman were obtained with T4.4 treatment, where 75% straw was removed and 25% straw incorporated with soil. The lowest yield was obtained with the control crop without fertilizer or straw residues. The NPKS uptake by T. Aman rice and benefit : cost ratio supported the dominant performances of T4.2 (100% NPS + 50% K + 25% boro rice straw removed). The results suggested that it is possible to reduce K mining from soils as well as to reduce the rate of K fertilizer application, substituting by incorporation of rice straw residues in soil system. DOI: http://dx.doi.org/10.3329/sja.v12i2.21924 SAARC J. Agri., 12(2): 123-133 (2014)


2018 ◽  
Vol 105 (7-9) ◽  
Author(s):  
Prakash Ranjan Behera ◽  
D. Jegadeeswari ◽  
T. Chitdeshwari

1983 ◽  
Vol 101 (2) ◽  
pp. 311-316 ◽  
Author(s):  
C. S. Patel ◽  
A. K. Mandal

SUMMARYField experiments on the effect of moisture regimes and fertilizer application on fibre yield of two jute varieties showed that JRO 632 (Corchorus olitorius L.) produced significantly more fibre, utilized moisture more efficiently and extracted water from deeper layers than did JRC 212 (Corchorus capsularis L.). Scheduling of irrigation at 20% available soil moisture (ASM) gave the highest fibre yield in normal (1970) and drought (1972) years but unirrigated conditions (dry regime) gave highest yield in a year of excess rainfall (1971). The consumptive use (CU) increased from dry to wet regimes and the water use efficiency (WTJE) was greater in dry regimes in normal as well as in excess rainfall years. But the WUE was maximal when the crop was irrigated at 60% ASM in the drought year. The water requirement of the jute crop was 490 mm in the normal and excess rainfall years (20% ASM and dry regime respectively) while in the drought year it was 560 mm (20% ASM). The moisture extraction was more from deeper depths in the dry regime and only from shallower depths in wet regimes.The fibre yield increased with increase in nitrogen application from 40 to 80 kg/ha. Application of 40 kg P2O5 and 40 kg K2O/ha did not improve the fibre yield in the excess rainfall and drought years. In the drought year (1972) irrigating at 20% ASM and 80 kg N/ha and in the excess rainfall year (1971) the dry regime with 40 kg N/ha produced highest fibre yields. There was not much variation in CU and WE of the crop due to different fertilizer levels. The WUE was increased by irrigating at 20% ASM with 80 kg N/ha in a crop rotation system where P and K were applied to preceding crop.


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