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Girth increments of cocoa seedlings grown in different soil: Compost mixtures or sprayed with foliar fertilizer at 2, 4 and 6 months after sowing
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Aims: Availability of nutrients-rich topsoil for nursing cocoa seedlings is becoming limited and poor growth of cocoa seedlings in the nurseries has been ascribed to the use of unsuitable potting media. Experiments were conducted to investigate the suitability of compost in improving soil chemical properties and boost the growth of cocoa seedlings...
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RESUME
Objectif : L'objectif de cette étude est de contribuer à l'optimisation de la méthode de greffage du colatier
(Cola nitida). L'étude a consisté à évaluer le succès de la technique de greffage en fente terminale de deux
clones d’élites de colatier (305 et 313) et de deux types de porte-greffes (Cola nitida et Theobroma cacao).
Méthodologie et...
This research was conducted to compare three variants of substrate preparation used in mass propagation of cocoa (Theobroma cacao L.) in nursery conditions. Three treatments were studied: T1-manual mixing with shovel, T2-mechanized mixing with motorized cultivator and T3-mechanized with mixer. Evaluations were made of the physical-chemical characte...
Cocoa genotypes exhibiting different responses to water and watering rates to growth parameters necessitate this study. Seedlings were raised from cocoa hybrids genotypes (CRIN Tc1 – 8) and F3 Amazon. The seeds after 4 days of sowing were subjected to 3 watering rates of 50 ml, 100 ml and 150 ml applied once every two days and arranged in a CRD des...
Côte d'Ivoire, the world's largest cocoa producer, faces numerous challenges because the yield of orchards is low due to several factors including the non-use of improved plant materials. This work is part of ICRAF's Vision for Change (V4C) project, which aimed at contributing to the regeneration of cocoa farms by making effective plant materials a...
Cariniana pyriformis is a native arboreal of Colombia with high forestry potential in pure plantations and agroforestry systems of Theobroma cacao. In an agricultural nursery with plastic cover, production and seedling quality were evaluated with a complete randomized block design and three replications using three plastic containers (treatments):...
Citations
... The unamended soil had lower OC content than that those amended with MC (1.15% -2.98%). Singh and Agrawal (2010) [43] and Arthur et al. (2019) [6] also found similar results i.e., increasing in the OC content in the soil with an increase of application of organic composts. Total N and P content in soil were found to increase from 2% to 4.98% and 20.44 mg/kg dw to 37.86 mg/kg dw, respectively with increasing application rates of MC (Singh and Agrawal, 2007;Kolodziej et al., 2015;Sharma et al., 2018) [44,25,41] . ...
... In the present study, the mean concentration of available N and P were found to be increased with the increasing the concentration of municipal compost in soil which ranged between 14.28 mg/kg to 25.68 mg/kg and 0.18 mg/kg-1.49 mg/kg, respectively ( [28,44,17,41,6] . Exchangeable Na, K, and Ca content (mg/kg dw) were also found to be increased with the increasing MC amendment rate in soil and ranged between 113.25 -173.66, ...
Disposal of municipal composts to agriculture can provide essential nutrients to the plants, whereas a rapid increase in human activities has contaminated municipal composts with many toxic heavy metals such as Cd, Pb, Ni, Hg, etc. Therefore, the present study was designed to assess the effects of municipal compost amended soil on growth performance and heavy metals (Cu, Zn, Cd, and Pb) accumulation especially in the edible parts of vegetable (bean; Phaseolus vulgaris L., palak; Spinacia oleracea L.) crops under mountain ecosystem. The tested vegetables were grown in soil amended with municipal composts produced in Kullu valley of Himachal Pradesh, India as 0%, 20%, 40%, and 60%. The results showed that Cu, Zn, Cd, and Pb concentrations in edible parts of both bean and spinach increased significantly (p<0.05) with increasing application rates of municipal composts in soil. The accumulation of Cd and Pb was found higher in spinach as compared to the bean. A similar and an opposite trend were also recorded for Cu and Zn. The concentrations of all the heavy metals in both the tested crops grown on soil amended with municipal compost had exceeded their safe limit as described under PFA acts 1954. The results further showed that growth of both the bean and spinach measured in terms of numbers of leaves, heights, dry weight, and yield were found to be increased significantly with the increasing application rate of municipal compost. From the present study, it can be concluded that the application of municipal composts can improve crop yield but may not be a suitable option for disposal in mountain agriculture as it poses a serious risk to the safety of vegetable crops. The present study further suggests that the lower application rate i.e., <20% of municipal compost should be tested for agricultural use in the future.
... Organic fertilizer is safe for the agriculture ecosystem and efficient crop growth. A toxic buildup of chemicals and salts that could be fatal to plants is extremely unlikely It is very difficult to over fertilize with organic fertilizer and harm plants because it appears to be a slow-release fertilizes (Arthur et al., 2019). When organic fertilizers decompose, they release nutrients that strengthen the soil's structure and increase the soil's capacity to hold water and nutrients. ...
