scholarly journals The Effect of Temperature Stress Associated With Different Planting Dates and Levels of Gibberellic Acid on The Growth of Sorghum Spring

2021 ◽  
Vol 923 (1) ◽  
pp. 012090
Author(s):  
Diaa Abd Alkarim Jabir ◽  
Mohammed Radwan Mahmoud

Abstract A field experiment was carried out in the experimental field of the Department of Field Crops, College of Agriculture/University of Al-Muthanna during the spring season 2021 to determine the effect of planting dates on some growth characteristics of sorghum. The experiment was applied by arranging the split panels according to the RCBD design and with three replications. The main panels included three planting dates (4/15 ’ 4\5 ’ 3/25) while the secondary panels included gibberellin treatments (0, 100ppm) and the results were as follows: The planting date exceeded the first date 3/25 in the number of days to 75% flowering (97.5 days), the height of the plant (143.74 cm) and the diameter of the stem(2.34 cm) and the number of leaves per plant (8.73 leaves). 75% flowering, giving(92.33) days, plant height (136.55 cm), stem diameter (2.04 cm) and number of leaves (8.10 leaves).

2021 ◽  
Vol 8 (2) ◽  
pp. 1-10
Author(s):  
Salam Hameed Abdulla ◽  
Sundus A. Alabdulla ◽  
Haitham A. Ali

"This study was conducted in the experimental field of Agriculture Faculty, Wasit University (Wasit Governorate Center) in the autumn season 2018, to study the effect of four planting dates (June 25, July 10, July 25 and August 10) and four spacing between hills (10, 15, 20 and 25 cm) on growth and forage yield of Sudan grass Hybrid. The experiment was carried out by using split-plots with R.C.B.D design with three replicates, the planting dates were put in the main plots, and distances between hills were placed in the sub plots. Two cuts were taken from all treatments ,the following traits were studied ,Plant height,, number of tillers per plant, number of leaves per plant, plant leaf area, leaves/stems ratio, and green forage yield. Planting date on 25 July at 1st cutting gave the highest studied characteristics and green yield were 89.452 t. ha-1, Planting date on 25 June at the 2nd cutting gave the highest studied characteristics and gave green forage yield about 86.090 t.ha-1. Planting at 20cm showed a significant effect among the other distances in most growth characteristics at the 1st and 2nd cutting and gave the highest green forage yield were 85.255 and 58.900 t. ha-1. The distance of 20 cm at the date of June 25 gave the highest green yield, which were 93.200 t. ha-1. The interaction between studied factors showed a significant effect on the green forage yield at 1st cutting, the distance of 20 cm at the date of June 25 gave the highest green yield, which were 93.200 t. ha-1, with an increase of 37.67% over than June 25 date, at a distance of 10 cm, the lowest yield of green fodder was recorded at 67.707 t. ha-1 *Part of M.Sc. thesis of the first author"


2010 ◽  
pp. 132-140 ◽  
Author(s):  
MA Islam ◽  
MH Reza ◽  
SMAHM Kamal ◽  
MA Wazed ◽  
KM Islam

An experiment was conducted with a local cultivar of garlic to study the effects of planting date and gibberellic acid on the growth and yield of garlic at the field laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh during November 2001 to April 2002. Early planting influenced the plant height, leaf number, bulb diameter and total dry matter. With the delay in planting time starting from November 7, the yield was chronologically reduced in later plantings. Significantly the highest bulb yield (2.67 t/ha) was recorded when planting was done on November 7 and lowest yield (0.92 t/ha) was obtained from December 22 planted crop. Bulb yield was higher in control plants than those of GA3 treated plants. The interaction effects of planting date and different concentrations of GA3 differed significantly in respect of plant height, number of leaves, bulb diameter and dry weight of roots, leaves and bulbs and yield of garlic.


1966 ◽  
Vol 46 (1) ◽  
pp. 77-85 ◽  
Author(s):  
H. F. Fletcher ◽  
A. R. Maurer ◽  
D. P. Ormrod ◽  
B. Stanfield

The effect of 15 planting dates on various growth characteristics of peas var. Dark Skin Perfection was studied in outdoor pot experiments at Vancouver and Agassiz, B.C. Differences in growth and yield between locations and planting dates were partly accounted for by the mean of maximum temperatures for the growth period.At Agassiz where temperatures exceeded the optimum for most growth characteristics in many of the later plantings, the mean of maximum temperatures was negatively correlated with total dry-matter yield, peas per pod, and pea yield; was positively correlated with branching; and had no effect on pods per plant, double-podded nodes, and tillering. At Vancouver, where temperatures were suboptimum for the early plantings and approached optimum for the later plantings, the mean of maximum temperatures was positively correlated with total dry-matter yield, pods per plant, double-podded nodes, tillering, and pea yield but had no effect on peas per pod or branching. A seasonal mean maximum temperature of 68 to 70°F was considered to be optimum for peas.


2016 ◽  
Vol 1 (01) ◽  
pp. 92-96
Author(s):  
Sachin Kumar ◽  
Jitendra Kumar ◽  
Himanshu Kaushik ◽  
Rajbeer .

A field experiment was conducted at the Horticulture Research Farm Department of Horticulture, CCS University, Meerut during the year 2011-12 with 2 factors and 9 treatments, P1B0 (Gibberellic acid@ 200ppm at 30 DAP),P0B1 (Azotobacter @ 0.14ml/ liter water (corm treatment), P1B2 (Gibberellic acid @ 200ppm at 30 DAP + Azotobacter @ 0.14ml./m2 (soil application), P2B0 (Gibberellic acid @ 200ppm at 60 DAP), P2B1 (Gibberellic acid @ 200ppm at 60 DAP + Azotobacter @ 0.14ml/liter water (Corm treatment)), P2B2 (Gibberellic acid @ 200ppm at 60 DAP + Azotobacter @ 0.14ml./m2 (soil application)),P0B1 (Azotobacter @ 0.14ml/ liter water (corm treatment)), P0B2 (Azotobacter @ 0.14ml./m2 (soil application)),P0B0 (control). Maximum result were found of days for opening of first floret, plant height, number of florets per spike, spike length and length of rachis at the treatment combination P2B2 (Gibberellic acid @ 200ppm at 60 DAP + Azotobacter @ 0.14ml./m2 (soil application)),while the appearance of initial spike, width of leaf and diameter of florets were found in P2 B1 (Gibberellic acid @ 200ppm at 60 DAP + Azotobacter @ 0.14ml/ liter water (corm treatment)) expect number of days for corm sprouting and number of leaves per plant.


2016 ◽  
Vol 47 (5) ◽  
Author(s):  
Al-Abodi & et al.

A field experiment was conducted at the Experimental Farm, Department of Field Crops, College of Agriculture, University of Baghdad /Abu-Ghraib during the growing season of 2009 and 2010 to investigated the effect of spraying of ascorbic acid at three concentrations (0.5, 1.0 and 1.5) gm L-1 on some growth characters and yield of three genotypes of soybean (Sori, Lee and Snaea -2-), using RCBD with in split plot arrangement with three replications. The genotypes were in main plots while the concentrations of ascorbic acid were in sub plots. The results showed that the superiority of Sori genotype in branches No. (7.11 and 7.90) branch.plant-1, pods No. (153.44 and 187.43) pod.plant-1, pods weight (133.17 and 173.54) gm and 100 seed weight about 11.01 and 12.78 gm so gave highest plant yield about 91.11 and 95.19 gm.plant-1 for both season respectively. Spraying of ascorbic acid caused significant increase in most studied characters and the concentration 1.5 gm L-1 was superior in branches No. (6.49 and 6.84 branch.plant-1, pods No. (112.95 and 129.56) pod.plant-1, pods weight (101.42 and 118.58) gm and seeds per pod (2.64 and 2.70) seed.pod-1 so gave highest seed yield per plant about 76.82 and 83.90 gm.plant-1 for both season respectively. The best combination was Sori X 1.5 gm L-1 gave highest seed yield per plant about 101.51 and 108.88 gm.plant-1 for both season respectively. The conclusion from this study was: The different genotypes of soybean were different in their response to ascorbic acid spraying and the level 1.5 gm L-1 was the best for all the studied genotypes.


1966 ◽  
Vol 2 (1) ◽  
pp. 45-47 ◽  
Author(s):  
G. P. Tewari

SummaryA split-plot field experiment was conducted to investigate the influence of planting dates on the formation of nodules in a variety of cowpea (Paraguay 6). Results indicated that the principal factor influencing both nodulation and yield was day-length, the highest number of effective nodules being produced from the June planting.


2021 ◽  
pp. 44-48
Author(s):  
M. M. Hossain ◽  
M. A. Kader ◽  
M. A. Kashem

Planting dates for a crop is a non-monetary input but plays a significant role in increasing the yield crop. Therefore, identifying genotype-specific planting dates is essential for obtaining the economic yield of tropical sugar beet. From this perspective, a field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University in  Bangladesh, from November 2015 to April 2016. Five sugar beet genotypes: Shubhra, Cauvery, EB-0616, EB-0626, and EB-0809 planted on four dates: 10, 20, 30 November, and 10 December. Treatments were laid out in a split-plot design replicated three times. Data revealed that planting on 10 November date, genotype EB-0809 produced the highest tuber yield, which was significantly superior to any other genotype combined with other planting dates. It was found that every ten days delay of planting from 10 November to 30 December reduced the tuber yield by 30, 43, and 55%, respectively. Results confirmed that planting the EB-0809 genotype on 10 November is ideal to obtain the highest tuber yield of tropical sugar beet in Bangladesh.


2017 ◽  
Vol 9 (2) ◽  
pp. 143-150
Author(s):  
MA Rahman ◽  
M Imran ◽  
M Ikrum ◽  
MH Rahman ◽  
MG Rabbani

An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh, during the period from October 2014 to March 2015 to study the effects of planting date and growth hormone on the growth and yield of cauliflower. The experiment consisted of two factors; Factor A: Three planting dates, such as P1: Planting on 1 November; P2: Planting on 15 November and P3: Planting on 1 December; Factor B: Four levels of Growth hormone, such as H0: No Hormone (control); H1: 10 ppm IAA (Indole-3 Acetic Acid); H2: 70 ppm GA3 (Gibberellic Acid) and H3: 10 ppm IAA + 70 ppm GA3. The experiment was laid out following Randomized Complete Block Design (RCBD) with three replications. In case of planting date, the highest plant height (63.26 cm), number of leaves per plant (24.13), leaf length (59.26 cm), leaf breadth (19.31 cm) at harvest, curd diameter (22.25 cm), marketable yield per hectare (28.11 t ha-1) were recorded from P2 and the lowest of those parameters were recorded from P3. In case of growth hormone the highest plant height (63.10 cm), number of leaves per plant (23.66), leaf length (59.05 cm), leaf breadth (18.98 cm) at harvest, curd diameter (22.39 cm), marketable yield per hectare (29.88 t ha-1) were recorded from H3 and the lowest of those perameters were recorded from H0. Combination of planting date and growth hormone the highest plant height (65.96 cm), number of leaves per plant (26.42), leaf length (63.64 cm), leaf breadth (20.92 cm) at harvest, curd diameter (25.75 cm), marketable yield per hectare (31.03 t ha-1) were recorded from planting on 15 November and 10 ppm IAA with 70 ppm GA3 (P2H3) and the lowest parameters (21.75 t ha-1) were recorded from planting on 1 December and no hormone (P3H0). It is apparent from the above results that the combination of planting on 15 November and 10 ppm IAA with 70 ppm GA3 (P2H3) was more productive from the other combinations.J. Environ. Sci. & Natural Resources, 9(2): 143-150 2016


2015 ◽  
Vol 3 (4) ◽  
pp. 651-654
Author(s):  
M.J. Alam ◽  
K.S. Ahmed ◽  
M.R.A. Mollah ◽  
M.Z. Tareq ◽  
J. Alam

The experiment was conducted at Shibganj upazila under Bogra district during October, 2014 to January, 2015 to observe the effect of planting dates on the yield of mustard seed. There were five planting dates viz. 25 October, 30 October, 05 November, 10 November and 15 November. Significant variations due to different planting dates were observed in plant height, number of leaves plant-1, number of siliqua plant-1, number of seed siliqua-1, 1000 weight plot-1, yield plot-1and yield ha-1of mustard. Results showed that the highest seed yield was1.50 t ha-1 obtained from 30 October. The lowest seed yield was 1.0 t ha-1 from 15 November. From the results, the best planting date of mustard is on 30 October in the northern parts of Bangladesh.  Int J Appl Sci Biotechnol, Vol 3(4): 651-654


Author(s):  
Jawad Abdul Kadhim Kamal

A field experiment was conducted in the agricultural season (2016 - 2017) in one of the fields of college of Agriculture - University of AL-qadisiyah on mays L. Zea to study the interrelated effect of both the acid and Azotobacter and Azospirillum. The experiment was applied according to RCBD design and three replicates. The treatment included 12 treatments resulting from the treatment of Control and Azotobacter , Azospirillum , organic fertilizer, The most important results reached:1. Azotobacter + Azospirillum + organic fertilizer have the superior to the vegetative growth characteristics of mays by giving the highest average (number of leaves, dry weight of leaves, dry weight of root total) (24.67, 17.5 g, 8.17) g respectively, except for treatment (Azospirillum + organic fertilizer) was superior in plant height 92.0 cm.2. Azotobacter + Azospirillum + organic fertilizer has the highest values for the chemical grade of mays in (potassium, calcium, sodium, respectively (0.243, 2.60 and 0.077) %.


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