scholarly journals Allelopathic activity of the leaf powder of Ficus nitida on the growth and yield of Vicia faba and associated weeds

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
R. R. El-Masry ◽  
S. A. A. Ahmed ◽  
Kowther G. El-Rokiek ◽  
Nadia K. Messiha ◽  
Sanaa A. Mohamed
1994 ◽  
Vol 45 (3) ◽  
pp. 613 ◽  
Author(s):  
JM Carter ◽  
WK Gardner ◽  
AH Gibson

The response of faba beans (Vicia faba L. cv. Fiord) to seed inoculation with eight strains of Rhizobium leguminosarum biovar. viciae was examined in field experiments at six sites on acid soils in south-west Victoria. At two of the sites, two additional strains were examined, and in 1988, 14 strains were examined at one site. Very low natural populations of R. leguminosarum bv. viciae were found at the experimental sites. Most strains resulted in improved early nodulation and increased grain yield at all sites, when compared to inoculation with the commercial strain of rhizobia (SU391). Plant dry matter production and nitrogen accumulation in the plant shoot tissue was also increased at one site during the flowering period by some strains. Large visual differences between plots inoculated with SU391 and other strains were evident at most sites. Most uninoculated treatments were not nodulated and yielded very poorly. Treatments inoculated with the strain SU391 performed similarly to the uninoculated treatments.


Author(s):  
A. Ouji ◽  
S. Chekali ◽  
M. Rouaissi

Background: In Tunisia, faba bean (Vicia faba L.) is the first major food legume. The development of faba bean production is facing several biotic constraints. Faba bean Ascochyta blight caused by Ascochyta fabae is one of the most destructive diseases of faba bean and can cause significant yield loss under favorable conditions. As only incomplete resistance ABL varieties are available, some agronomic practices should be applied to control and reduce Ascochyta blight incidence wherever possible. Therefore, this work was undertaken to evaluate the effect of spacing row and seed rate on ABL severity, growth and yield of faba bean. Methods: A split-plot design with three replications was adopted to carry out this study during 2018 and 2019 cropping seasons. ‘Bachaar’ faba bean variety was sown at 40 and 60 cm row spacing and at three seed rates (100, 140 and 200 kg ha-1). ABL severity was assessed visually on a 0-9 scale and agro-morphological traits were measured. Analysis of variance was used to analyze the data. Correlations between agronomic traits, row spacing, seed rate and ABL severity were investigated. Result: Results showed that seed rate has a larger effect on yield than row spacing. In both cropping seasons, the highest grain yield was recorded in 60 cm row spacing and 140 kg ha-1 seed rate treatment. So, this treatment is recommended for obtaining high yield of faba bean. Most of the variation in disease severity was associated with seed rate (r=0.62). The highest ABL score severity was noted at 200 kg ha-1 rate. Over both years, wide row spacing and low seed rate reduced ABL severity. In this study, the small amounts of ABL disease (which reached a score of 5.3 and 4.7 in 2018 and 2019, respectively) had little or no effect on yield.


2020 ◽  
Vol 27 (2) ◽  
pp. 103-117
Author(s):  
Mona Adel El-Wakeel

Allelopathy and natural products are safe non-chemical modern techniques that applied as alternative to synthetic herbicides for controlling weeds. So, two pot experiments were conducted to evaluate the allelopathic effect of Psidium guajava leaf powder (PLP) and Acetic acid 5% as a natural product on the growth and yield of Capsicum annuum plants and both associated weeds: Phalaris minor (grassy weed) and Malva parviflora (broad-leaved weed). PLP was mixed with in the soil surface at successive rates (15, 30, 45 and 60 g/pot). In the corresponding treatments PLP at the same sequenced rates was mixed with the soil then sprayed with acetic acid 5% immediately. Moreover, sole spraying of acetic acid 5% treatment was sprayed on the soil surface. All treatments were applied before transplanting directly. Results revealed that the maximum inhibition of both weeds in both seasons was recorded by PLP at 60g + Acetic acid 5% as compared to unweeded control. Concerning to C. annuum growth parameters and yield traits, sole application of PLP at successive rates is more effective than PLP at the same successive rates with acetic acid 5%. So, it was observed that PLP at 60g/pot and 45 g/pot significantly developed most of growth parameters and yield traits of C. annuum than the healthy plants in both seasons. On the contrary, acetic acid treatment alone recorded the lowest value of all growth parameters and yield traits of Capsicum annuum plants.Allelopathy and natural products are safe non-chemical modern techniques that applied as alternative to synthetic herbicides for controlling weeds. So, two pot experiments were conducted to evaluate the allelopathic effect of Psidium guajava leaf powder (PLP) and Acetic acid 5% as a natural product on the growth and yield of Capsicum annuum plants and both associated weeds: Phalaris minor (grassy weed) and Malva parviflora (broad-leaved weed). PLP was mixed with in the soil surface at successive rates (15, 30, 45 and 60 g/pot). In the corresponding treatments PLP at the same sequenced rates was mixed with the soil then sprayed with acetic acid 5% immediately. Moreover, sole spraying of acetic acid 5% treatment was sprayed on the soil surface. All treatments were applied before transplanting directly. Results revealed that the maximum inhibition of both weeds in both seasons was recorded by PLP at 60g + Acetic acid 5% as compared to unweeded control. Concerning to C. annuum growth parameters and yield traits, sole application of PLP at successive rates is more effective than PLP at the same successive rates with acetic acid 5%. So, it was observed that PLP at 60g/pot and 45 g/pot significantly developed most of growth parameters and yield traits of C. annuum than the healthy plants in both seasons. On the contrary, acetic acid treatment alone recorded the lowest value of all growth parameters and yield traits of Capsicum annuum plants.


2014 ◽  
Vol 177 (5) ◽  
pp. 741-747 ◽  
Author(s):  
Christina Neuhaus ◽  
Christoph-Martin Geilfus ◽  
Karl-Hermann Mühling

Author(s):  
M. Prakash ◽  
S. Pallavamallan ◽  
G. Sathiya Narayanan ◽  
S. Rameshkumar

Cluster bean is one of the major legumes cultivated in many parts of the world. However effect of organic seed pelleting in this crops needs more attention nowadays in probem soils like saline soil. Field experiments were carried out with cluster bean cv. Pusa Mausami to study the effect of organic seed pelleting on biometric, biophysical and yield parameters of clusterbean under saline condition. The seeds of cluster bean cv. Pusa Mausami were pelleted with pungam, prosopis, notchi, arappu leaf powders @ 50, 100, 150 and 200 g per kg. From the results, it was found that seed pelleting with pungam leaf powder @ 200 g per kg registered significantly higher values for biometric parameters viz., plant height, number of branches per plant, dry matter production, biophysical parameters viz., photosynthetic rate, transpiration rate, stomatal conductance, intercellular CO2 concentration and yield parameters viz., pod length, number of pods per plant, pod yield per plant, number of seeds per pod, seed yield per plant and hundred seed weight. From the present study, it was concluded that seed pelleting with pungamn leaf powder @ 200 g per kg can be recommended for increased growth and yield parameters in cluster bean under saline conditions.


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