Showing posts with label Wheat. Show all posts
Showing posts with label Wheat. Show all posts

11.1.10 TILLERING AND REPRODUCTIVE RESPONSES TO POPULATION DENSITIES OF WHEAT VARIETIES

Suraiea Akhter, H.M.M. Tariq Hossain* and A.K.M. Ruhul Amin

* The corresponding author’s Email: hmmtariq@yahoo.com

 Abstract

The experiment comprising three improved wheat varieties (V1 = BARI Gom-30, V2 = BARI Gom-31 and  V3 = BARI Gom-32) and four plant population densities (D0 = no thinning (control), D1 = 100 plants m−2, D2 = 125 plants m−2 and D3 = 150 plants m−2) was conducted in Split-plot design with three replications at Sher-e-Bangla Agricultural University (SAU) farm. Varieties and plant population densities were assigned in the main plots and the sub-plots respectively. From the trial, it was evident that tillering and yield-contributing characters of wheat varieties were significantly influenced by plant population densities. The above ground dry matter weight increased up to harvest while the number of tillers plant−1 increased up to 60 days after sowing and there after declined. The maximum dry matter weight (4394.0 g m−2) was found from the combination treatment V3D0. The interaction effect of V3D2 produced the maximum number of tillers plant−1 (5.35), highest weight of 1000-seeds (55.44 g), grain yield (3.20 t ha−1), biological yield (4.55 t ha−1) and thus eventually reflected maximum value of harvest index (70.67%). The highest straw yield (2.80 t ha−1) was observed from the (V1D0) treatment. As such, the combination treatment V3D2 was found to be the best treatment combination for wheat production under the agroclimatic conditions of SAU campus.

Keywords: Wheat, tiller, plant population density and yield.

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8-1-7 YIELD RESPONSE OF WHEAT AS AFFECTED BY IRRIGATION AND POTASSIUM FERTILIZER

YIELD RESPONSE OF WHEAT AS AFFECTED BY IRRIGATION AND POTASSIUM FERTILIZER

Md. Samsujjoha Chowdhury, Mahmuda Motmainna, Md. Mahfuzar Rahman, Md. Ahsan Habib and Md. Abdullahil Baque*

*Corresponding Author email: bellah_77@yahoo.com

Abstract

The study was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during from November 2012 to March 2013. The experiment comprised of two factors- Factor A: Irrigation, I0: No irrigation i.e. control; I1: Irrigation at 20 DAS (crown root initiation stage); I2: Irrigation at 55 DAS (flowering stage) and I3: Irrigation at 20, 55 and 75 DAS (crown root initiation stage, flowering stage and grain filling stage) and Factor B: Level of potassium fertilizer, K0: 0 kg K2O ha-1, K1: 50 kg K2O ha-1 and K2: 100 kg K2O ha-1. The irrigation levels I1, I2 and I3 were at par and had significantly higher values in number of spikes per hill, number of spikelets per spike, spike length, 1000 seed weight, straw yield and grain yield as compared to the control. Likewise application of both the doses of potassium (K1 and K2) were at par and showed significantly higher values in number of spikes per hill, number of spikelets per spike, spike length, 1000 seed weight, straw yield and grain yield than the control. Both the factors had significant effect on spike length, number of filled grains per spike, grain yield and straw yield. The interaction treatment I3K1 and I3K2 were at par showing significantly the higher number of spike per hill, number of spikelets per spike, filled grains per spike and grain yield per hectare, straw yields although the longest spike (19.60 cm), highest filled grains spike-1 (34.83). grain yield (3.79 t ha-1), straw yield (6.09 t ha-1) and biological yield (9.88 ha-1) was observed from I3K2. On the other hand, the shortest spike (13.80 cm) was recorded from I0K0. Significantly the lowest number of filled grains spike-1 (23.33), grain yield (2.04 t ha-1), straw yield (3.77 t ha-1) and biological yield (5.81 ha-1) was recorded from I2K0.

Keywords: Wheat, Irrigation, Potassium fertilizer, Growth and Yield.

J. Expt. Biosci.8(1) January 2017 
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8-1-6 Rahman et al - INFLUENCE OF SOWING DATES ON THE GROWTH AND YIELD OF WHEAT VARIETIES


INFLUENCE OF SOWING DATES ON THE GROWTH AND YIELD OF WHEAT VARIETIES

M. Rahman, M. Begum, M. S. H. Mandal, H. Mehraj, T. S. Roy and A. K. M.Ruhul Amin

*Corresponding author. E-mail: mshmandal@gmail.com

Abstract
A field experiment was conducted at the Agronomy research field, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November 2012 to March 2013 in rabi season with a view to find out the optimum sowing date for maximum growth and yield of wheat varieties. The experiment was carried out with three wheat varieties i.e.  BARI Gom 21, BARI Gom 23 and BARI Gom 24; and five different sowing dates viz. 10th November; 20th November; 30th November; 10th December and 20th December of 2012 following Randomized Complete Block Design (RCBD) with three replications. The results revealed that among the wheat varieties BARI Gom 24 performed best recording the highest grain yield (4.51 t ha-1). On the other hand, November 20th performed better than the other sowing dates showing the highest grain yield (4.81 t ha-1). Gradual decrease of growth parameters, yield attributes and yield were observed when wheat seeds were planted in delay after November 20th. Based on the above findings it may be concluded that wheat seeds of BARI Gom 24 may be sown on 20th November for obtaining maximum grain yield.
Keywords: Wheat, sowing dates, yield
J. Expt. Biosci.8(1) January 2017 
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6-2-1-Reza et al

EFFICACY OF HERBICIDES AS AFFECTED BY APPLICATION TIME IN WHEAT
Authors: M.Z. Reza, M.H. Ali, M. Sultana and H.M.M. Tariq Hossain*
*Corresponding author, Email: hmmtariq@yahoo.com

Abstract

Efficacy of different herbicides (Sencor 7 WG@ 500g ha-1, Lintur 70 WG @ 250g ha-1, Ronstar @ 1 liter ha-1) applied at different growth stages  of crop was studied for controlling weeds in wheat in a field experiments at the research farm of Sher-e-Bangla Agricultural University during 2007-08. A weedy check (no herbicide) was also included for comparison.   Significant differences were found among the times of application of herbicides for biological yield, 1000 grains weight (g), and grain yield (t ha-1). The interaction of the times of application and herbicides was significant for grain yield. Maximum 1000 grains weight (47.48g) was observed in plots treated with Ronstar, while minimum (38.17g) in weedy check plots (no herbicide). Biological yield (7.0 t ha-1) and grain yield (3.16 t ha-1) were higher in plots treated with Ronstar while lower biological yield (4.5 t ha-1) and grain yield (1.62 t ha-1) were in weedy check plots. Ronstar proved to be the most  effective herbicides giving the maximum grain yield of (3.37 t ha-1) and biological yield (7.3 t ha-1), when applied at 21 DAS in wheat.

Key words: Herbicides, Sencor 7 WG, Lintur 70 WG, Ronstar and wheat.


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Return Volume: Journal of Experimental Biosciences 6(2): July 2015
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5-2-10-Rahman et al

Screening of Wheat genotypes against salinity stress under laboratory condition

M. A. Rahman, F. Begum, F. Ahmed, B. Ahmed and N. Mokarroma

*Corresponding author; Email: aminurbari@gmail.com

Abstract
A laboratory experiment was conducted at Plant Physiology Division, Bangladesh Agricultural Research Institute (BARI) during rabi season of 2013-2014 to evaluate the response of 36 wheat genotypes to different levels of salinity and to find out the salt tolerant genotype(s) for saline areas. The treatments consisted of thirty six wheat genotypes and four levels of salinity (0, 5, 10 and 15 dS m-1) in complete randomized design (CRD) with three replications. The plant growth media was used in Hoagland solution with pH 6.0. Distilled water was used as a control (0 dS m-1) treatment. The results showed that germination percentage, seedling root and shoot dry weight and vigour index were found to be affected by different levels of salinity. Among the tested genotypes of wheat, BWSN E-15, PYT E-14 (BAW-1193), CVD E-5 (BAW-1135), CVD E-9 (BAW-1151), CVD E-10 (BAW-1157), CVD E-11(BAW-1161) , CVD E-12 (BAW-1163) and PYT E-15 showed better performance up to 10 dS m-1 as evaluated on the basis of germination percentage, seedling growth, seedling dry weight and vigour index.

Key words: Screening, Wheat genotypes and Salinity.

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5-2-9-Uddin et al

STUDY ON MORPHOPHYSIOLOGICAL CHARACTERS IN WHEAT/PEANUT INTERCROPPING

M.K.B. Uddin, S. Naznin*, M.A. Kawochar, R.U. Choudhury and M.A. Awal
*Corresponding author; E-mail: nazninsau@gmail.com

Abstract

An experiment was conducted at the Crop Botany Field Laboratory, Bangladesh Agricultural University, Mymensingh to study the morphological and growth characters of wheat and peanut in intercropping association. In this intercropping, wheat was considered as main crop and peanut as intercrop. The experiment comprised of four treatments namely, sole wheat, sole peanut, single row intercropping (1W:1P i.e., one row of wheat followed by one row of peanut), and double row intercropping (1W:2P i.e., one row of wheat followed by two rows of peanut).  The plant height, number of tillers hill-1, primary branches plant-1, spikes hill-1, secondary branches plant-1, leaves culm-1, primary leaves plant-1, and total number of leaves hill-1 or plant and leaf area index (LAI) were the maximum in sole cropped plants while those were the minimum in 1W:1P intercropped plants. Root, stem, leaf, spike or pod and whole plant’s dry matter were maximum in sole cropped plants while those were minimum in 1W:2P intercropped wheat and 1W:1P intercropped peanut plants. The highest grain weight plant-1 (8.03 g) was harvested from sole cropping which was about 20 and 9% higher grain weight than that of wheat plants grown under single (6.39 g)  and double row intercropping (7.32 g), respectively. Similarly, sole peanut plants produced highest (15.08 g) seed weight plant-1 which was about 35 and 25% higher seed weight plant-1  than that of the peanut plants grow under 1W:1P (9.84 g)   and 1W:2P (11.26 g) intercropping systems, respectively. Concerning all the characters studied, it can be concluded that the wheat and peanut crops are compatible in their intercropping mixture and double row intercropping system is superior to their sole stands or single row intercropping system.

Key words: Morphophysiological characters, intercropping, wheat and peanut.


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5-2-4-Uddin et al

PRODUCTIVITY OF WHEAT AND PEANUT IN INTERCROPPING SYSTEM

M.K.B. Uddin, S. Naznin*, M.A. Kawochar, R.U. Choudhury and M.A. Awal
*Corresponding Author; E-mail: nazninsau@gmail.com

Abstract
An experiment was conducted to study the productivity performances of wheat and peanut in intercropping association. In this association, wheat was considered as main crop and peanut as intercrop. The experiment comprised of four treatments namely, sole wheat, sole peanut, single row intercropping (1W:1P i.e., one row of wheat followed by one row of peanut), and double row intercropping (1W:2P i.e., one row of wheat followed by two rows of peanut). The highest grain yield of wheat (3.21 t ha-1) was harvested from sole cropping of wheat which was about 40 and 20% higher than that of single row (1.93 t ha-1) and double row (2.56 t ha-1) intercropping, respectively. Similarly, the highest nut yield of peanut (3.02 t ha-1) was produced by sole peanut which was 35 and 7% higher than those of single row (1.97 t ha-1) and double row (2.82 t ha-1 ) in intercropping, accordingly. On the other hand, the single and double row combination in intercropping systems gave the highest land equivalent ratio (1.45 and 1.53 accordingly) and area time equivalent ratio (1.21 and 1.36, respectively). In both the single and double row intercropping systems, wheat exhibited higher competitive ratio (1.22 and 1.29). Concerning all the characters studied and economical factors analyzed, it was revealed that the wheat and peanut crops were compatible in their intercropping association, where double row intercropping system was superior to their sole stands or single row intercropping system.

Key words: Productivity, Iintercropping, Wheat and Peanut.

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