scholarly journals Effect of foliar spray of GA3 and NAA on sex expression and yield of bitter gourd

2019 ◽  
Vol 44 (2) ◽  
pp. 281-290
Author(s):  
R Khatoon ◽  
M Moniruzzaman ◽  
M Moniruzzaman

A field experiment was conducted at the Plant Physiology field of Horticulture Research Center, BARI, Gazipur during two consecutive years of kharif 2014 and 2015 to assess the effect of GA3 and NAA on sex expression, yield and yield components of bitter gourd (Momordica charantia L.) var. BARI Karola-1. Eeleven treatments comprising five concentrations each of gibberellic acid (50, 100, 150, 200 and 300 ppm) and naphthalene acidic acid (50, 100, 150, 200 and 300 ppm) along with distilled water considered as control were evaluated in randomized complete block design with three replications. Gibberellic acid (GA3) and Naphthalene acidic acid (NAA) were sprayed at 4 leaf stage; second spray was done at 35-38 DAS and third spray done at flowering stage. All the treatments improved the flowering and yield characters over control. Foliar spray of NAA @ 150 ppm and 200 ppm was found better in terms of sex expression, yield and yield attributes of bitter gourd as compared to control and other treatments. Spray of NAA @ 150 ppm gave the lowest number of male flowers and the highest number of female flowers thereby produced the lowest sex ratio (male:female). Number of fruits/plant, individual fruit weight and fruit yield/plant were also found maximum from NAA 150 ppm. Maximum fruit yield was recorded with the application of NAA @ 150 ppm. Spraying of NAA @ 150 ppm gave the maximum gross return and net return with the highest BCR of 3.17. Bangladesh J. Agril. Res. 44(2): 281-290, June 2019

2021 ◽  
Vol 35 (3) ◽  
pp. 269-275
Author(s):  
Assinapol Ndereyimana ◽  
Bancy Waithila Waweru ◽  
Boniface Kagiraneza ◽  
Arstide Nshuti Niyokuri ◽  
Placide Rukundo ◽  
...  

This study was carried out to determine the effect of vine and fruit pruning on watermelon (Citrullus lanatus) yield. Five pruning methods: P1=no pruning at all, P2=pruning to four vines with two fruits per vine, P3=pruning to four vines with one fruit per vine, P4=pruning to three vines with two fruits per vine and P5=pruning to three vines with one fruit per vine were evaluated on two watermelon cultivars: ‘Sugar baby’ and ‘Julie F1’ under a factorial randomized complete block design with three replications. Investigations were carried out in the seasons 2017A (short rains) and 2017B (long rains) at Karama and Rubona experimental sites belonging to Rwanda Agriculture and Animal Resources Development Board. The obtained results indicated a significant difference among the different cultivars and pruning methods tested during both seasons and at two sites. Generally, all studied parameters recorded higher values during season 2017B than in season 2017A at Rubona site. A similar trend was recorded at Karama site except that the fruit yield per plant and per hectare for plants which were pruned to three vines with one fruit reduced during season 2017B as compared to season 2017A. The highest number of fruits per plant, fruit weight, fruit yield per plant and per hectare was recorded in ‘Julie F1’ compared to ‘Sugar baby’ at both sites and during both seasons. Higher fruit weight was obtained when both cultivars were pruned to three or four vines with one fruit per vine. Higher number of fruits per plant and higher fruit yield per plant was observed under pruning to four vines with two fruits per vine at Rubona site; while at Karama site, higher fruit yield per plant was recorded under pruning to three vines with one fruit or two fruits per vines and pruning to four vines with two fruits per vine. A similar trend was observed in fruit yield per hectare. Based on results of the current study, cultivation of the hybrid ‘Julie F1’ and pruning to three vines with one fruit per vine is recommended for optimum watermelon yield with big-sized fruits.


Author(s):  
Nusrat Jahan ◽  
Md. Ashabul Hoque ◽  
Md. Rasal-Monir ◽  
Sumya Fatima ◽  
Mohammad Nurul Islam ◽  
...  

The study was carried out to find out the effect of zinc (Zn) and boron (B) on growth and yield of okra (BARI Dherosh 1). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The treatments of the experiment were, T0 (without Zn or B), T1 (20 kg Zn ha-1), T2 (30 kg Zn ha-1), T3 (10 kg B ha-1), T4 (20 kg B ha-1), T5 (20 kg Zn ha-1 + 10 kg B ha-1), T6 (20 kg Zn ha-1 + 20 kg B ha-1), T7 (30 kg Zn ha-1 + 10 kg B ha-1) and T8 (30 kg Zn ha-1 + 20 kg B ha-1) were undertaken to evaluate the best results of the study. The highest plant height was found in T8 (30 kg Zn ha-1 + 20 kg B ha-1) but the highest number of leaves plant-1 was recorded from T7 (30 kg Zn ha-1 + 10 kg B ha-1). On the other hand, the maximum leaf area index, SPAD value, mean fruit weight, fruit length, fruit diameter, fruit dry matter (%), number of fruits plant-1, fresh fruit weight plant-1 , fruit yield plot-1 and fruit yield ha-1 were found in T7 (30 kg Zn ha-1 + 10 kg B ha-1), while the control (T0) showed lowest performance for the respected parameters. It is strongly concluded that 30 kg Zn ha-1 with 10 kg B ha-1 combination may be helpful for okra cultivation in the field level to increase okra production.


2018 ◽  
Vol 16 (02) ◽  
pp. 25-34
Author(s):  
F Akhter ◽  
T Mostarin ◽  
MN Islam ◽  
S Akhter

This study was conducted at the Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka during October, 2015 to January, 2016 to determine the effects of mulches and phosphorus on the growth and yield of squash (Cucurbita pepo). The experiment consisted of two factors. Factor A: different mulches and Factor B: phosphorus (3 levels). The experiment was laid out in a Randomized Complete Block Design with three replications. Mulches and phosphorus showed significant effects on most of the parameters. In case of mulches, highest individual fruit weight (328.0 g) and fruit yield (37.0 tha-1) was recorded from black polythene, whereas the lowest fruit weight (280.8 g) and fruit yield (21.5 tha-1) was recorded from control. In case of phosphorus, highest individual fruit weight (300.4 g) and fruit yield (31.3 tha-1) was recorded from 90 kg P2O5/ha,whereas the lowest fruit weight (290.4 g) and fruit yield (26.2 tha-1) was recorded from control. For combination, highest individual fruit weight (338.2 g) and fruit yield (39.9 t ha-1) were recorded from black polythene with 90 kg P2O5/ha while the lowest individual fruit weight (272.2 g) and fruit yield (19.7 t ha-1) were recorded from control treatment. Black polythene mulch with 90 kg P2O5/ha was found suitable for squash cultivation under the condition of the study. The Agriculturists 2018; 16(2) 25-34


Author(s):  
Pervin Akter ◽  
MA Rahman

Three concentrations of each of IAA viz. 2.5 (T1), 5.0 (T2) and 10 (T3) ppm and GA3 viz. 2.5 (T4), 5.0 (T5) and 10 (T6) ppm were applied as foliar spray on bitter gourd. Results showed a positive stimulatory effect in the increase of female flowers at T3 where the male to female sex ratio was the lowest. The number of fruits, fresh weight of fruits and yield per plant were also found to be the highest at T3. DOI: http://dx.doi.org/10.3329/cujbs.v5i1.13370 The Chittagong Univ. J. B. Sci.,Vol. 5(1 &2):55-62, 2010


2019 ◽  
Vol 18 (5) ◽  
pp. 123-129
Author(s):  
Rahmatollah Gholami ◽  
Seyed Morteza Zahedi

Water is the most important environmental factor in growth and fruit yield of trees. To study the effect of deficit irrigation on reproductive characteristics and yield of seven superior olive genotypes of D1, Dd1, Gw, Ps1, Bn3, Bn6, and Ds17, the present research was accomplished in Dallaho Olive Research Station of Sarpol-e zahab, Kermanshah, Iran, in 2014 and 2015. Seven superior olive genotypes were studied in a Randomized Complete Block Design with three replications and three irrigation regimes. The irrigation treatments include: 100% full irrigation (control), 75% deficit irrigation, and 50% deficit irrigation applied during the growth season. The results indicated that the genotypes had different reactions to the deficit irrigation regimes. Dd1 had the highest fruit weight while the lowest fruit weight was observed in Ps1 and Gw. The highest fruit yield was found in Bn3, Bn6, and Dd1 while the lowest was observed in Ps1. As a result, Bn6 and Dd1 are introduced as the genotypes which are resistant to drought in the field.


2021 ◽  
Vol 29 (2) ◽  
pp. 43-51
Author(s):  
A Hoque ◽  
MS Alam ◽  
S Khatun ◽  
M Salahin

An experiment was conducted to study the effect of micronutrients on the growth and yield performance of chickpea. The experiment was consisted using two factors- variety and treatments. Two local cultivars viz. BARI Chola-5 and BARI Chola-9 and five treatments e.g. T0 = control, T1 = 2 kg B/ha, T2 = 2 kg Mo/ha, T3= seed priming with Mo (1g/l water), T4 = foliar spray of B (0.5 g/l water) + seed priming with Mo (1g/l water), and T5 = 2 kg B/ha + seed priming with Mo (1g/l water) were considered for this study. A randomized complete block design (RCBD) was adopted with three replications. Significant variation was observed between the varieties and here the BARI Chola-9 produced the higher seed yield (2.47 ton/ ha). Treatment showed significant effect on the yield attributes and yield of chickpea. The highest plant height, number of branches/ plant, number of pods/ plant, nodule/ plant, number of effective pod/ plant, length of the pod, 1000-grain weight, seed yield, straw yield, biological yield was obtained from T4. The highest seed yield (2.68 ton/ ha) was recorded from BARI Chola-9 with foliar spray of boron and seed priming with Mo. The results indicated that foliar spray of B and seed priming with molybdenum can be beneficial in improving growth and yield of chickpea variety BARI Chola-9. J. Bio-Sci. 29(2): 43-51, 2021 (December)


2020 ◽  
Author(s):  
Ayodele Samuel Oluwatobi

ABSTRACTThis study was conducted during the rainy season of 2017 within the alleys of juvenile oil palms that were 2-year-old at the oil palm plantation located in Ala, Akure-North Local Government, Ondo State. Tomato accessions (NGB 01665 and NG/AA/SEP/09/053) were intercropped at 1, 2 and 3 m from the juvenile oil palm within the alley in a randomized complete block design. The results showed that tomato (NGB 01665 and NG/AA/SEP/09/053) planted at 3 m from the juvenile oil palm performed better than those at other planting distances in terms of growth and yield attributes with number of fruit; fruit weight and yield per hectare of 39.50, 2265.8 g and 3.74 ton/ha respectively. However, the control (sole) recorded the best yield but was not significantly different from those planted at 3 m from the juvenile oil palm. Varietal advantage was recorded by tomato (NGB 01665) with higher number of fruits, fruit weight and yield per hectare (26.94, 1834 g and 3.158 ton/ha) respectively. Intercropping advantage was not recorded for any of the intercropping distance regimes during the trial (when the juvenile oil palms were 2-year-old), with LER values less than unity.


HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 760c-760
Author(s):  
Jose Pablo Morales-Payan ◽  
Bielinski M. Santos

Field experiments were conducted in the Dominican Republic to determine the effect of combinations of N with folcysteine and gibberellic acid 3 on cilantro (Coriandrum sativum) yield. Nitrogen levels (0, 36, 55, 73, 91 kg·ha–1) in soil application at sowing were combined with foliar spray of the biostimulant folcysteine or gibberellic acid (0, 100, 200, 300, and 400 ppm) 15 days after emergence. Treatments were applied in a factorial arrangement on a randomized complete block design with three replications. Fresh weight of the aerial part of the plants was determined 40 days after emergence. No significant difference was found due to folcysteine treatment. Nitrogen had a significant effect, with optimal yield at 55 kg·ha–1. Significant interaction was detected for the combinations of gibberellic acid and N, with yield increasing as the rate of the two factors increased.


2016 ◽  
Vol 14 (1) ◽  
pp. 13-16
Author(s):  
SR Saha ◽  
AFMS Islam ◽  
MM Hasan ◽  
MM Rob

An experiment was conducted at the field laboratory of Sylhet Agricultural University from May to October 2013 comprising of 8 okra cultivars viz. BARI Dherosh-1 (control), Orka Onamika, Bankim, Durga, JO (Japanese okra)-1, JO-2, JO-3 and JO-4. This study was intended to select the superior okra cultivar(s) based on yield performance in acidic soil conditions. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications and all the cultivars were evaluated in relation to yield and yield attributes. Significant variations were observed in almost all parameters. Results revealed that high yielding cultivars JO-3 and Bankim produced largest fruits, however maximum number of fruits and fruit setting (%) were exhibited by the latter. The cultivars JO-1 and JO-4 showed maximum fruit weight but JO-4 provided highest fruit diameter. The cultivars Bankim followed by JO-3 & JO-4 were evaluated to be promising cultivars at Sylhet regions considering overall performances regarding yield and yield attributes.J. Bangladesh Agril. Univ. 14(1): 13-16, June 2016


Author(s):  
Tanveer Ahmad ◽  
Syed Muhammad Zia-ul-Hassan ◽  
Qumer Iqbal ◽  
Muhammad Awais Ghani ◽  
Rana Muhammad Sabir Tariq

Bitter gourd (Momordica charantia L.) is a popular crop grown as field and backyard vegetable in Asian countries. A field experiment was performed using Randomized Complete Block Design (RCBD) to assess the effect of plant growth regulators (PGRs) on the productivity of bitter gourd cv. Faisalabad Long. There were four treatments viz. control (no PGR), GA3 100 mg L-1, IAA 200 mg L-1 and GA3 50 + IAA 100 mg L-1, and each treatment was replicated thrice. Results revealed that untreated (control) plants took maximum days to flower (45.66), while both GA3 100 mg L-1 and GA3 50 + IAA 100 mg L-1 treated plants behaved statistically alike with 41.00 and 42.33 days, respectively. Application of GA3 100 mg L-1 depicted significant superiority for fruit length, average fruit weight, fruit yield per plant and seed yield per plant. However, statistically similar response was recorded for all the PGR treatments for male and female flowers per plant, time to first harvest, number of fruits per plant and fruit diameter; while maximum vine length at final harvest was recorded when GA3 and IAA were applied in combination. Overall results indicated that application of GA3 100 mg L-1 resulted in early crop maturity and significantly higher fruit yield per plant when compared with other treatments.


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