Agriculture Journal: Volume-10, Issue-1, January, 2024

Abstract- Bioaugmentation technology achieved rapid bioremediation to significantly improve the water quality of Ranisagar Chaupati Lake over the course of our 8-week study. At the beginning of our study, Ranisagar Chaupati Lake was graded on the Water Quality Index (WQI) as bad water quality and on the Trophic State Index (TSI) as highly eutrophic. Bioaugmentation technology was added to the lake as an all-natural, environmentally safe protocol to improve water quality. This resulted in overall improvement in the WQI from 36.6 (Bad quality) to 57.5 (Moderate quality) and the trophic status of the lake improved from hypereutrophic to eutrophic state.

Abstract-In organic farming, homemade organic fertilizer such as compost or enriched organic material had become one of crucial factors for nutrient management. Other than the limited source of N for organic fertilizer as the key factor for growth-limiting nutrients in organic farming, the cost of fertilization is also affected by different organic fertilizer application rates. Therefore, the objectives of this study were (i) to determine the effect of these organic fertilizers on the soil properties (chemical and biological properties) and (ii) to evaluate the efficiency and growth performance of Kailan (Brassica alboglabra) as influence by the application of different organic fertilizer in the field. A study was conducted at an integrated organic farming research area in the Malaysian Agricultural Research and Development Institute (MARDI) at Serdang, Selangor for two consecutive cycles. The experimental treatments were focused on the different rates of organic fertilizer inputs (3-33 t/ha from organic sources) with soil alone as a control. The treatments were applied 14 days after transplanting using Brassica alboglabgra as a test crop. The study result found that a BIOC at 2 tonne kg/ha give significant different in nutrient use efficiency (NUE), however NC at 33 tonne kg/ha rate of organic input had improved most of soil properties NF showed a great yield as well as their growth performances. Study findings have shown that the range of application rate of organic input depends on applicability of the organic fertilizer whether it can promotes nutrient uptake in plants and or can be scaled up to farm level to sustain organic system productivity.

Abstract-The constraints of Alfisol or Mediterranean soils pose unique management challenges for maintaining soil fertility and agricultural productivity. The aim of the research was to study the effect of couple inoculation Rhizobium and Phosphat Solubilizing Bacteria (PSB) on plant growth and production of Cowpea in Alfisol or Mediterranean soils. The experiment used a Randomized Block Design with treatment as combination concentration of PSB and Rhizobium sp. The treatment consist of : control; PSB of 10 ml/L and Rhizobium sp 10 ml/kg seed; PSB of 10 ml/L and Rhizobium sp 20 ml/kg seed; PSB of 10 ml/L and Rhizobium sp 30 ml/kg seed; PSB of 20 ml/L and Rhizobium sp 10 ml/kg seed; PSB of 20 ml/L and Rhizobium sp 20 ml/kg seed; PSB of 20 ml/L and Rhizobium sp 30 ml/kg seed; PSB of 30 ml/L and Rhizobium sp 10 ml/kg seed; PSB of 30 ml/L and Rhizobium sp 20 ml/kg seed; PSB of 30 ml/L and Rhizobium sp 30 ml/kg of seed. Each treatment was repeated with three repetitions. Data analysis used analysis of variance at the 5% level, followed by LSD test at the 5% level. The results showed that couple inoculation PSB and Rhizobium sp. increase significantly N and P soil, plant growth of Cowpea i.e the plant height, number of root nodules, fresh weight, shoot dry weight and total dry weight, the average 100 seed weight, population of PSB in soils and Rhizobium in root cowpea compared by control.