Potential of Organic Wastes as Liming Materials in Low Input Rainfed Agricultural System

Abstract

A field experiment was conducted on an acid soil in a humid tropical Island of Andaman, India to explore the feasibility of using locally available organic wastes as liming materials after suitable composting. The organics such as coconut husk compost, poultry manure, vermicompost and gliricidia were incorporated at the rate of 20 Mg ha -1 and the amendment effect was compared with lime applied at the rate of 4 Mg ha -1. Soil application of composted organic wastes significantly increased the soil pH. The exchangeable Al 3+ showed significant reduction in organic amended soils and completely disappeared in poultry manure and lime treated soils. Significant differences were observed in root volume by application of N rich organic materials compared to control (11.7 mm 3 ) and lime (23.3 mm 3 ) application which helped in increasing volume of soil foraged by maize roots. Poultry manure (3.79 t ha -1 ) and vermicompost (3.73 t ha -1 ) application recorded on par maize grain yield but significantly higher than the control (1.93 t ha -1 ). The results showed the potential of poultry manure and coconut husk composted with either poultry manure or gliricidia as alternate liming material for low input agricultural system prevailing in humid tropical Islands.

Potentiality of Indian rock phosphate as liming material in acid soil

“…It was found that though liming effect of RPs increased pH of acid soil to a few units, the reduction in available Al content in soil might have significant role in improving plant growth environment in highly acidic soils as observed in the present study. Similar results were observed by other workers where significant increase in soil pH and decrease in exchangeable Al content occurred in the soil incubated with different organic wastes like coconut husk compost, poultry manure and vermicompost (Wong et al, 1998;Swarnam and Velmurugan, 2014).…”

Physical and Chemical Characteristics of Green Algae Halimeda opuntia Calcium Powder Extracted Using Hydrochloric Acid

“…Based on the analysis by comparing the diffraction pattern with the database, it clearly understood that the calcium extracted from H. opuntia had the same pattern as CaCO 3 . This result was connected with the statement of Swarnam et al (2021) that H. opuntia contains a high level of CaCO 3 within cells. The diffractogram pattern in this research was also the same as eggshells and seashells' which were exhibited by Supriyanto et al (2019) and Dampang et al (2019).…”

Effects of broiler litter age and application rate on nutrient mineralization under laboratory condition

“…These BLs may have liming potential through cations addition (K + , Ca 2+ , Mg 2+ , NH 4 + , etc.) (Mowrer et al., 2020; Swarnam & Velmurugan, 2014). We mixed the BL and soil and measured the pH (Table 3).…”