Allelopathic effect of Dendrocalamus stocksii (Munro.) on growth and yield of ground nut (Arachis hypogaea)

Abstract

The present study was conducted to assess allelopathic effect of Dendrocalamus stocksii (Munro.) on the growth and yield of ground nut (Arachis hypogaea). Bamboo leaf leachate was prepared by soaking the dry leaves in tap water for 24 hours in a ratio of 1:10 w/v. Using prepared leachate as stock solution the leachate of various concentrations viz., control (0%), 25, 50 and 75 and 100 per cent were prepared by adding tap water accordingly. The results revealed the concentration-dependent significant (p=0.05) inhibitory effect of bamboo leaf leachates on the germination, radicle and plumule length of groundnut in laboratory condition. The leaf leachate of 100% concentration reduced down the germination percentage (56%), radicle length (3.00 cm) and plumule length (5.36 cm) as compared to control treatment where the germination percentage (86.66%), radicle length (5.02 cm) and plumule length (12.08 cm) were maximum. Similarly, the allelopathic effect of leaf leachate on transplanted seedlings of groundnut in prepared beds inside the poly house were significantly (p=0.05) inhibitory for the test seed weight and straw yield/ha. Minimum test seed weight (430.33 g) was recorded in the treatment of 25 % concentration as compared to control (601.33 g) and straw yield per hectare in the treatment of 100 % concentration (2421.1 kg/ha) as compared to control (4729.4 kg/ha). However, the non- significant effect of leaf leachate was observed on other yield parameters i.e., number of tillers per plant, number of pods / plant, test seed weight, seed yield per plant, number of seeds per pod and grain yield per ha. Finally, it is concluded that the harmful effect of leaf leachates of Dendrocalamus stocksii is more prominent in early stage of germination, emergence of radicle and plumule etc., rather than after transplanting; it is recommended to avoid the effect of these allelochemicals in early growth stage in field condition.

Arabica coffee and cedar tree: integrating biotic and abiotic drivers

“…Tree litter can release phytotoxic exudates into the soil, restricting germination (Rawat et al, 2017) and growth vigor of surrounding plants (Garima and Devi, 2017). Limonoids (De Leo et al, 2018;Zhang et al, 2019) and several phenolic compounds (Samaradivakara et al, 2016;Tandon and Sand, 2016) predominate among metabolites of Australian red cedar.…”

Trioxys liui Chou & Chou, 1993 (Hymenoptera, Braconidae, Aphidiinae): an invasive aphid parasitoid attacking invasive Takecallis species (Hemiptera, Aphididae) in the Iberian Peninsula

“…Generally, bamboos grow and spread fast (Cao et al 2011), a trait that can crowd out native plant species. The allelopathic secretions of various bamboo species can also prohibit the growth of the nearby plant species (Chou and Yang 1982;Chou 1999;Rawat et al 2017). However, ornamental bamboos should be protected against invasive herbivorous insects that could be distributed along with their host plant material in botanical gardens in Europe.…”

Allelopathic Effects of Oldeania alpina (K. Schum.) Leaves Aqueous Extract on Seed Germination and Initial Seedling Growth of two selected crops

“…Accordingly, a stock solution of 10 g / 100 mL was prepared and used at 10% concentrations. Then, different diluted aqueous extract concentrations (2.5%, 5.0%, 7.5%, and 10.0%) were prepared separately by soaking a corresponding 2.5 g, 5.0 g, and, 7.5 g of dry powdered leaves in 100 mL of distilled water respectively following the methods used by Rawat et al (2018a). An equal amount of stock-free distilled water was used as a control treatment.…”

“…1 and stored at 7 °c to prevent decay and breakdown by bacteria (Narwal et al 2009). In total, ve concentration treatments (0, 2.5, 5, 7.5, and 10% concentration levels) were prepared following the methods used for bamboo species by different authors (Rawat et al, 2016(Rawat et al, , 2017(Rawat et al, , 2018aMoura et al 2018).…”