10-1-6 EFFECTS OF MANURE AND SPLIT-APPLICATION OF NITROGEN ON GRAIN YIELD OF MAIZE

Khondakar Yeasen Mohammad Shoukat, Abu Bakar Siddique, Dr. Md. Hazart Ali, Hasibul Hasan, Md. Marufur Rahman*

 

*Corresponding author: marufur233@gmail.com

Abstract

In order to investigate the effect of manuring and split application of nitrogen on grain yield of maize an experiment was conducted at the agronomy field laboratory of Sher-e-Bangla Agricultural University, Dhaka, during the period from March to June 2006 wherein the treatments comprised two split applications of nitrogen (SP1= 25 and 45 days after sowing and SP2=25, 45 and 65 days after sowing) and four manure (M) application doses (M1=0, M2=5, M3=10 and M4=15 t ha-1). The treatments were arranged in split plot design with three replications. Inorganic fertilizers +cow-dung 15 t ha-1 (M4 treatment) gave the best response for all the parameters were as inorganic fertilizer(IF) only (M1 treatment) gave the poorest response to grain and stalk yields which ranged respectively from 5.43 to 9.02 t ha -1 and from 6.76 to 12.16 t ha -1 due to different maturing treatments. The highest grain yield was obtained from M4 treatment, identically followed by M3 treatment. The application of cow-dung at the rate of 10 and 15 t ha-1 together with recommended dose of inorganic fertilizers improved grain yield over inorganic fertilizers alone and 3 split applications of nitrogen increased grain yield of maize over 2 split applications of nitrogen.

Key word: Maize, Manure, Split application.

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J. Expt. Biosci.10(1) January 2019

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9-2-1 IMPACT OF N-SPLITTING AND MANURE APPLICATION DOSE ON NPK CONTENTS IN MAIZE PLANTS

Khondakar Yeasen Mohammad Shouka, Abu Bakar Siddique, Md. Hazrat Ali, Hasibul Hasan4 and Md. Marufur Rahman*

*Corresponding author: marufur233@gmail.com

Abstract

Manure and nitrogen are important nutrient source for crops. These materials are directly related to crop growth and quality production. Present study revealed the effects of manure and split application of nitrogen on nutrient contents in maize. The study was performed at the experimental field of the Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207 in Bangladesh during the period from March 2006 to June 2006 comprising two split applications of nitrogen (SP1= 25 and 45 days after sowing and SP2=25, 45 and 65 days after sowing) and four manure (M) application doses (M1=0, M2=5, M3=10 and M4=15 t ha-1). The treatments were arranged in split plot design with three replications. N, P and K contents both in the grain and stalk tissue increased significantly with the increase in both the split number and manure dose. N, P and K contents in grain and stalk tissues were analyzed. The highest N contents in grain and stalk tissue were obtained with SP2, M4 and SP2M4 (2.06 & 0.92, 2.25 & 0.91 and 2.40 & 0.94% respectively). These treatments also had the highest P contents in grain and stalk tissue (0.14 &0.14, 0.18 & 0.18 and 0.15 & 0.15% respectively). Like wise these treatments had the highest K contents in grain and stalk tissues (2.06 & 0.92, 2.25 & 0.91 and 2.40 & 0.94% respectively).

Key words: N-splitting, Maize, Manure and NPK contents.

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J. Expt. Biosci.9(2) July 2018

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9-2-9 PERFORMANCE OF TWO EXOTIC WHITE MAIZE HYBRIDS AS INFLUENCED BY VARYING SOIL MOISTURE REGIMES DURING SEEDLING TRANSPLANTATION

Md. Jafar Ullah*, Md. Mahirul Islam, Kaniz Fatima, Md. Sohel Mahmud and M.A.Mannan

*Corresponding author, E-mail: jafarullahsau@gmail.com

Abstract

The trial was initiated on Nov 01 of 2017 in randomized complete block design with three replications. Six treatments combining two varieties (PSC-121= V₁ and Yangnuo-3000=V₂), three moisture regimes (field capacity at sowing of the sown treatment = FC, wetting surface up to saturation of the soil at transplanting = WT and flooding at transplantation = FL) and two methods of planting (sown and transplanting). As such the six treatment combinations were V₁FC, V₂FC, V₁WT, V₂WT, V₁FL and V₂FL. Results showed that Transplanting had no remarkable effect on plant height (205-225 cm) and number of leaves per plant (14-16). However significant effect was seen on stem circumference at the base was affected showing reduced value in the v1WT (5.60 cm), distance of cob position from the base showing the farthest with V₂FC (102 cm) and the nearest (73 cm.) with v1WT. Cob bearing node from the base was also affected showing cobs at the nearest (7.33) with v1WT while, farthest with V₂FC (9.5). Treatments also showed wide ranges of cob length (15.00-17.78 cm), cob circumference (13.83-16.87), number of grain rows per cob (12.00-13.33) and number of grains per grain rows (27.89-36.33). In the individual ear a wider range in number of grain (360-482), grain weight (82.06-121.07 g), shell (rachis) weight (11.00-29.00 g) and chaff (husk) weight (6.4-13.78 g) was also observed. There was also wider ranges in per plant ear weight (99.50-162 g), stover dry weight (81.50-139.52 g) and total dry weight (194-296 g). Treatments significantly affected 100 seed weight (20.67-32.67 g), seed yield (6.565-10.048 t/ha) and harvest index (36.32-49.96%). The highest seed yield was observed with the treatment v1FC which was attributed to the heaviest seed of this treatment (32.67 g) and number of grains per ear (483). V₂ FL had second highest seed yield (8.374 t/ha) showing 20% reduced seed yield due to transplantation. V1 out yielded V₂ showing 10% higher yields which was attributed to bolder seeds of V1 and 12% higher harvest index than V₂. V1 had 16% heavier grain weight per cob compared to V₂. However, this variety had also over 200 and 80% heavier shell and chaffs respectively compared to that of V₂. Likewise FC had 20 and 7% higher seed yields as compared to those of WT and FL. Transplanting remarkably reduced 100 seed weight (30%) which was attributed to the reduced seed yields due to seedling transplanting.

Keywords: White maize, seedling transplantation, soil moisture.

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J. Expt. Biosci.9(2) July 2018

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8-1-5 Jafar Ullah et al - COMPARING MODERN VARIETIES OF WHITE MAIZE WITH LANDRACES IN BANGLADESH: PHENOTYPIC TRAITS AND PLANT CHARACTERS

COMPARING MODERN VARIETIES OF WHITE MAIZE WITH LANDRACES IN BANGLADESH: PHENOTYPIC TRAITS AND PLANT CHARACTERS

Md. Jafar Ullah^*, M.M. Islam, Kaniz Fatima, M.S. Mahmud, S. Akhter, Jamilur Rahman

and Md. Quamruzzaman

*Corresponding author: jafarullahsau@gmail.com

Abstract

An experiment carried out to evaluate the performance of local maize variety compared to the modern variety. Treatment comprised three modern varieties i.e. Plough-201, Plough-202 and Suvra; and five local landraces i.e. Red, Purple, White, Yellow and Black. Local landraces were sown two times, 5 March 2015 (early) and 10 March 2015 (Late). Results revealed that the modern varieties produced tassel and silk 11. 33 and 20.50 days earlier, respectively along with 28.17 days earlier harvesting days compared to the local ones. The local landraces were bit longer plants (5.02 cm) than the modern varieties. The local landraces had three more leaves per plant (17) compared to that of the modern ones. The stem base of the modern varieties was 20% thicker (9.11 cm stem base circumference) compared to the local landraces. The modern varieties produced cobs at the 7^th nodes whereas those of the local varieties almost at the top of the plants (12^th nodes). Delayed sowing time of the local landraces resulted in the delayed tasseling and harvesting days by 11 and 23 days, respectively. The variety yellow grained had the longest tasseling days (69 days) whereas the white grained variety the shortest (62 days). The white grained variety had the longest silking days (87.50 days) while the red and black grained the shortest (78.50 days). The yellow grained variety sown in delay had the longest tasseling days (78 days) while red, black and purple sown early had the lowest tasseling days (58 days). The purple grained variety at both the sowing dates and; yellow and white at the late sowing dates produced silk in delay (87-88 days) while others in 71-81 days. The longest variety was the yellow grained showing 213 cm whereas the white grained variety was the shortest (170 cm). The variety white grained had 1.45 to almost three more leaves (17.40 per plant) than others. The thickest stem base circumference was obtained in the black grained one (8.40 cm) and the lowest in the red grained one (6.50 cm). The information derived from this study may be a good source of new allelic diversity that could at least be used for developing different important elite maize materials especially the ones to be produced for fodder purposes.

Keywords: maize variety, landraces, modern maize, hybrid, vegetative growth

J. Expt. Biosci.8(1) January 2017 

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6-2-12-Ahmed et al

ANALYSIS OF COMBINING ABILITY AND GENE ACTION OF FIELD CORN THROUGH LINE × TESTER METHOD

Authors: A. Ahmed*, M. Amiruzzaman, S. Begum, M.K. Alam and M.M. Rohman

*Corresponding Author; E-mail: asgar.gene@gmail.com

Abstract

Seven S₃ lines of commercial hybrid 7074 were crossed with 3 testers in a Line × Tester mating design and the resulting 21 crosses along with the parents and standard checks, BARI Hybrid Maize 9 (BHM 9) and NK 40, were evaluated in a alpha lattice design replicated twice, during rabi, 2014-15. The preponderance of non-additive gene action in the expression of the traits was found. Among the parents 7074/S₃-1, 7074/S₃-5, 7074/S₃-8, 7074/S₃-11 and testers BML-36 and CML-425 were good general combiners for grain yield and some of the important yield contributing characters (days to tasseling, days to silking, plant height, ear height, ear length, grains/ear and 1000 grain weight). The crosses 7074/S₃-1×BML-36, 7074/S₃-5×CML-425, 7074/S₃-1×BML-36, 7074/S₃-8×CML-425 and 7074/S₃-11×BML-36 showed high SCA effects for grain yield along with high mean could be used for commercial hybrid development.

Key words: Combining ability, gene action,maize corn, line × tester method.

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Return Volume: Journal of Experimental Biosciences 6(2): July 2015

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6-2-7-Ahmed et al

 EFFECT OF LEAF CLIPPING ON DRY MATTER PARTITIONING, GRAIN AND FODDER YIELD OF HYBRID MAIZE

Authors: F. Ahmed*, M. A. Jahan, F. Kabir, B. L. Nag, and A. H. M. M. Rahman Talukder

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

Abstract

A field experiment on hybrid maize was carried out at the Research field of Bangladesh Agricultural Research Institute, Joydebpur, RARS Jamalpur and Jessore during rabi season of 2012-13 to evaluate leaf clipping effect on grain and fodder yield of hybrid maize. Six treatments namely; T₁ = no leaf clipping (control), T₂ = all leaves clipping above cob, T₃ = all leaves clipping below cob, T₄ = T₂ + stem clipping above cob, T₅ = all leaves clipping, T₆ = keeping only ear leaf but other leaves clipping were used as treatments variable in the present study. Leaves clipping were done at 20 days after silking. Leaf clipping provided a remarkable amount of fodder yield but it reduced total dry matter production as well as cob dry weight which ultimately reduced grain yield. In all the locations, the highest grain yields (11.66, 10.15 and 10.75 t ha^-1) were recorded in no leaf clipping treatment (control) while the lowest (5.59, 5.22 and 4.90 t ha^-1) in all leaves clipping treatment. Over the locations, the highest fodder yields (10.71, 9.95 and 9.07 t ha^-1) were recorded in all leaves clipping treatment but it reduced grain yield drastically (49 to 54%). The lowest fodder yields (3.47, 4.40 and 5.06 t ha^-1) were recorded in all leaves clipping above cob treatment. Grain yields were less affected (6.09 to 14.28 % reduction) by all leaves clipping below cob treatment, which provided about 6 ton fodders ha^-1 in addition to grain yield. Therefore, all leaves clipping below cob at 20 days after silking would be an option for the farmers who usually practice leaf clipping in maize for fodder purpose.

Key words: Leaf clipping, fodder yield and grain yield.

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Return Volume: Journal of Experimental Biosciences 6(2): July 2015

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