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Articles by Tati Nurmala
Total Records ( 3 ) for Tati Nurmala
  Intan Ratna Dewi Anjarsari , Jajang Sauman Hamdani , Cucu Suherman and Tati Nurmala
  Background and Objectives: The use of growth regulators in pruned tea plantation in Indonesia is still very rare. One method that can be applied to increase growth is through the application of cytokinin such as Benzil amino purine (BAP). The objective of this study was to determine whether the combination of pruning and application of cytokinin BAP can increase the growth of tea. Materials and Methods: This experiment was conducted in Tea and Chinchona Research Centre, Gambung, west Java with an altitude of 1,250 masl. Randomized block design (RBD) was used with pruned height treatment, pruning type and cytokinin dosage combined into 8 treatments. Materials were used 7 year old GMB 7 clone and BAP. All parameters were tested by analysis of variance (ANOVA), followed by Duncan's multiple range test (DMRT) at the 5% significance level. Results: The results showed that type and height of pruning and application of cytokinin BAP affect the growth of pruned tea plants. The combination of clean pruning treatment, a pruning height of 60 cm and cytokinin usage in 60 mL produced optimal results for increased number of buds and active shoot (pecco) in pruned tea plants. Conclusion: The application of BAP can improve plant growth and development. This indicates that the provision of growth regulators has the potential to be used to accelerate the growth of tea plants after being pruned.
  Ruminta , Tati Nurmala and Fiky Yulianto Wicaksono
  Background: Job’s tears (Coix lacryma-jobi L.) is one of potential staple crop to improve food security as alternative or substitute to rice. Productivity of job’s tears need to be developed and improved through the adjustment of the environment and cultivation techniques. Micro climate and crop row spacing in job’s tears cultivation has not been widely studied. There was a need to know ideal micro climate and crop spacing to growth and yield of job’s tears. The results of this study are very important in agronomic engineering to improve productivity of job’s tears. Materials and Methods: This experiment used one Coix cultivar, which was obtained from the West Java Indonesia that has the characteristics of high yield and a shorter life span. Three types of Oldeman climate and three row spacing were selected and designed to investigate the interactive effects of the types of climate and row spacing on its growth and yield. The experimental design was split plot experimental design with three types of Oldeman climate classification (C2, C3 and D3) used as the whole plot and three types of row spacing (50, 75 and 100 cm) were used as the split plot and three replications. Several agronomic characteristics of Coix such as crop height, crop biomass, productive tiller number, panicles number, leaf area index, shoot-root ratio, 100-grain yield and harvest index were recorded. Results: This study showed significantly interactive effects of climate type and row spacing on panicles number, leaf area index and shoot root ratio. The results also showed non interactive effects of climate type and row spacing on height, biomass, productive tiller numbers, 100-grain weight, grain weight per crop, grain weight per m2 and harvest index. However, the different types of climate and row spacing showed significantly independent effects on these parameters but non significantly independent effects on 100-grain weight. Conclusion: Based on the results, it was concluded that climate type and row spacing had significantly interactive effects on the growth and yield of Coix.
  Ruminta , Handoko and Tati Nurmala
  Background and Objective: Climate change influence crops through its effects on the growing, development and yield. Research on climate change risk in staple food crops has been implemented in South Sumatra, Indonesia. The objective of this study was to assess level of climate change risk in staple food crops production (paddy, corn and soybean). Materials and Methods: This study used data of temperature, rainfall, sea level rise, hythergraph, irrigation, production of staple food crops and farmer’s socio-economic. Methods of this study were descriptive explanatory that using risks-vulnerability conceptual framework and risks were a function hazard and vulnerability. Results: The results of this study indicate that staple food crops were vulnerable to the impacts of climate change, indicated by hazards such as decreasing production of paddy, corn and soybean due to air temperature increase and rainfall change. Some areas of South Sumatra experienced the high risk of decreasing production of staple food crops. Generally, South Sumatera had decreasing wetland of paddy, upland paddy, corn and soybean production, respectively with an average 9.44, 22.00, 10.7 and 10.10% per year. Conclusion: South Sumatera Indonesia experienced the high risk of decreasing production of staple food crops due to climate change and had potency to disrupt food security in Indonesia.
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