scholarly journals Application of organic fertilisers on natural stand bamboos for sustainable management in peninsular Malaysia

2004 ◽  
Vol 3 (4) ◽  
pp. 309-317 ◽  
Author(s):  
Azmy ◽  
Hashim ◽  
Razak ◽  
Sulaiman
2013 ◽  
Vol 4 (1) ◽  
pp. 83-92
Author(s):  
JJ Atungwu ◽  
GE Jude ◽  
TI Olabiyi ◽  
SB Orisajo

Organic farming is currently receiving great impetus in Africa due to its potentials to improve nutrition, income and livelihoods of resource-poor smallholder farmers. Sustainable management of root-knot nematodes in organically grown soybean remain a major challenge in Africa. Greenhouse studies were conducted to evaluate the efficacy of three novel organic fertilisers (sunshine, neem, and IAR & T fertilisers) as organic nematicides for control of Meloidogyne incognita (Mi) in a susceptible soybean variety. The organic fertilisers were applied two weeks before planting. All three organic fertilisers were significant (P < 0.05) in reducing (96 – 99 %) Minematode populations in soil leading to 86 – 100 % improvement in soybean grain yield. There were high and positive relationships between plant heights stem girth and yield components. Root gall development on test crop was negatively correlated with plant growth (r = - 0.47 to – 0.48) and yield (r = - 0.57 to – 0.59).Keywords ·Root-knot nematodes · Neem · Soil amendments


2018 ◽  
Vol 14 (12) ◽  
pp. 160
Author(s):  
Aboubacar Kolafane ◽  
Douma Soumana ◽  
Adamou Mahaman Moustapha ◽  
Hama Insa Abdoulaye ◽  
Agundez Dolores ◽  
...  

The present study conducted in the Dallol Bosso fossil valley aims to know the local perception of the level of threat on the Neocarya macrophylla species in order to provide indicators of sustainable management of the natural stand. To do this, surveys were conducted in two agro-ecological zones.The collection of information was carried out through a simple questionnaire based on the woody stand, the sources of supply and the part of the plant taken from the woody food species, as well as the threats they suffer and their causes. It appears that the most dominant species is Neocarya macrophylla ; a multipurpose species among others, used for food, medicine and wood.The survey also reveals the presence of twenty four (24) ligneous foods species among which eighteen (18) are common to both zones. Analyses showed, the excessive cutting of the wood and the unfavorable climatic conditions as the main factors resulting on potential threat of these species. At the same time, threats on Neocarya macrophylla, a characteristic species of Dallol Bosso valley were identified on the field.


2019 ◽  
Vol 103 (1) ◽  
pp. 33-35 ◽  
Author(s):  
Don Flaten ◽  
Andrew Sharpley ◽  
Helen Jarvie ◽  
Peter Kleinman

This article reflects upon the challenges we face in agricultural P management and provides a discussion about opportunities to promote more comprehensive and sustainable management of this valuable resource.


2020 ◽  
Vol 14 (1) ◽  
pp. 34
Author(s):  
Faezah Pardi

This study was conducted at Pulau Jerejak, Penang to determine the floristic variation of its tree communities. A 0.5-hectare study plot was established and divided into 11 subplots. A total of 587 trees with diameter at breast height (DBH) of 5 cm and above were measured, identified and recorded. The tree communities comprised of 84 species, 63 genera and 32 families. The Myrtaceae was the most speciose family with 10 recorded species while Syzgium glaucum (Myrtaceae) was the most frequent species. The Myrtaceae recorded the highest density of 306 individuals while Syzgium glaucum (Myrtaceae) had the highest species density of 182 individuals. Total tree basal area (BA) was 21.47 m2/ha and family with the highest BA was Myrtaceae with 5.81 m2/ha while at species level, Syzgium glaucum (Myrtaceae) was the species with the highest total BA in the plot with value of 4.95 m2/ha. The Shannon˗Weiner Diversity Index of tree communities showed a value of 3.60 (H'max = 4.43) and Evenness Index of 0.81 which indicates high uniformity of tree species. The Margalef Richness Index (R') revealed that the tree species richness was 13.02. Myrtaceae had the highest Importance Value of 20.4%. The Canonical Correspondence Analysis (CCA) showed that Diospyros buxifolia (Ebenaceae) and Pouteria malaccensis (Sapotaceae) were strongly correlated to low pH. Dysoxylum cauliflorum (Meliaceae) and Eriobotrya bengalensis (Rosaceae) were correlated to phosphorus (P) and calcium ion (Ca2+), respectively. Therefore, the trees species composition at Pulau Jerejak showed that the biodiversity is high and conservation action should be implemented to protect endangered tree species. Keywords: Floristic variation; Tree communities; Trees composition; Pulau Jerejak; Species diversity


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