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Title:	Effect of phosphorus, lime and rhizobium on the growth and yield of groundnut in acidic soil
Authors:	Mohammed Hasan Abdullah (P80759)
Supervisor:	Ismail Bin Sahid, Prof. Dato' Dr.
Keywords:	Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia Plants -- Effect of acid precipitation on Soil fertility Peanuts -- Yields
Issue Date:	2016
Description:	Groundnut (Arachis hypogaea L.) crops are grown on sandy soil by smallholders where sustainable production is hindered by the infertility of these acidic soil. The aim of the present study was to examine the effects of phosphorus (P) fertilization when applied in combination with different treatments, on the vegetative growth, yield and seed quality of the groundnut grown in the acidic soil. This is an important strategy to improve productivity of groundnut under acidic soil conditions. The experiments were carried in the greenhouse conditions at the Faculty of Science and Technology, Universiti Kebangsaan Malaysia , Bangi, Malaysia. During 2014-2016, experiments on the effectiveness of phosphorus (P), timing of phosphorus (TP) application, liming (L) and inoculation of rhizobium (Rs) on groundnut were carried out using acidic soils under greenhouse conditions. The phosphorus (P) application rates were 0, 27.5, 55, 82.5 kg/ha. The recommended dosage of fertilizer which gave the highest yield and growth was when it was applied at four stages (7, 21, 42 and 60 days after sowing). Lime application was done at the rates of 0, 100, 200 and 300 kg/ha. The experimental design used was a complete randomized design (CRD) with 5 replications. Rhizobium inoculum was applied in combination with P at 0, 82.5 kg/ha and N at 0, 27 kg/ha, and laid out in a split-split plot design with 3 replications. Measurements were taken at the harvesting stage (at 105-115 days after planting). By increasing the rate of P to 82.5 kg/ha, there are significant differences observed on the total number of pods per plant, yield, shelling percentage and 100-seed weight. The results showed that P at the highest level (82.5 kg/ha) applied at 7 DAS significantly increased plant height, number of nodules/plant, number of pods per plant, pod yield, seed weight, oil content and shelling percentage. The results showed that the combination of the highest rates of lime and phosphorus gave significant effects on the maximum plant height (69.8 cm), number of branches (13.7 plant-1), number of nodules (36.6 plant-1), number of pods (15 plant-1), pod yield (2472.3 kg/ha), 100 seed weight (26.1 g), shelling percentage (70%), oil content (49.8%), protein content (23.6%), seed moisture (7.2%) and seed germination (70%). Meanwhile, the maximum plant height (75 cm), number of branches (21.3 plant-1), number of nodules (45 plant-1), number of pods (18.3 plant-1), pod yield (2661.7 kg/ha), 100 seed weight (39.2 g), shelling percentage (43.1%), oil content (54.3%), protein content (25.6%), seed moisture (7.9%) and seed germination (86%) were observed from the seeds that were inoculated with rhizobium (Rs) and fertilized at the recommended dosage of inorganic P and N fertilizers. Based on the findings of the present study, the use of commercial Rhizobium inoculants in combination with P and N (at 82.5, 27 kg/ha, respectively) are recommended for enhancement of soil fertility and groundnut productivity,Certification of Master's/Doctoral Thesis" is not available
Pages:	139
Call Number:	SB745.4.M843 2017 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Science and Technology / Fakulti Sains dan Teknologi

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