The comparison between conventional and rice ratoon system on soil properties, rice productivity and nutrient status

Abstract

<p>Ratoon system is a method of rice cultivation that produces new tillers after the mother plant is harvested and is continued by maintaining and caring for the shoots of the mother plant. In Indonesia, SALIBU and SINGGANG, which are types of rice ratooning, have been developed for Sumatra and Java regions, respectively. SALIBU is an innovation or a modification of the rice ratoon system that focuses on maintaining the time of fertigation and cutting of plant height. SINGGANG, on the other hand, is a rice ratoon system in which the management of fertigation and cutting is not considered. Both systems have not yet been implemented outside their places of origin. This study aims to compare the conventional and modified rice ratoon systems considering parameters such as soil properties, nutrient uptake, and the growth and yield of rice. The effects of rice ratoon systems (SALIBU and SINGGANG,), soil types (Inceptisols, Alfisols, and Vertisols), and cultivars (Pandan Wangi and Mekongga) were evaluated. All treatments were evaluated in a completely randomized design with three replicates in the net house. The results showed that the soil porosity in SINGGANG (48.89%) and SALIBU (46.78%) systems was higher than the conventional system (43.17%) in the Inceptisol soil and Pandan Wangi cultivars. Moreover, SINGGANG had a positive effect on the physical properties of soil (porosity and permeability); whereas, SALIBU had a positive effect on the chemical properties of soil (pH and organic carbon). In contrast, the agronomic parameters showed that the weights of dry matter and dry yield for SINGGANG were 44.96 and 23.09 g per plant clump, respectively, while those for SALIBU were 55.54 and 25.74 g per plant clump, respectively. These were lower than the conventional system (63.18 and 31.21 g per plant clump, respectively). Thus, we concluded that the SINGGANG and SALIBU ratoon systems had a positive impact on soil properties, but both systems could not promote higher rice production than the mother plant in all soil types and cultivars.</p>

Minimum tillage on vertisols lowland increases rice production and soil properties

“…Minimum soil tillage significantly affected most rice growth and yield parameters as well as soil physical and chemical parameters, compared to notillage and maximum tillage. Sakti et al (2021) demonstrated that the ratoon rice cropping system (regrowing rice plants from the results of previous crop pruning, which significantly reduces soil tillage) improved rice growth and yield parameters as well as physical and chemical properties of the soil (it requires soil preparation first). The results of previous studies have described the impact of conventional tillage systems through puddle pores.…”

“…Vertisol is the potential soil type due to its reasonably high land productivity (Wubie, 2015), even higher than Inceptisol and Alfisol (Sakti et al, 2021). The high value of CEC and having a pH value that tends to be neutral are positive characteristics of Vertisol, as shown by (Hamoud et al, 2019) that the increase in clay content in the soil is in line with the increase in K uptake in rice.…”

The Role of Tuo Banda Local Institutions in Improving Competitiveness and Implementation of Salibu Technology in Rice Farming in Tanah Datar District, Indonesia

“…Almost 60 per cent of wetland rice farmers have implemented the Salibu rice technology and it is expected to increase in the following year. This is supported by the high attention of the district government through the agriculture office to programme Salibu rice farming as a mainstay in rice farming 13,15 . The local institution of Tuo Banda is expected to play a significant role in ensuring the availability of water in implementing Salibu rice farming technology.…”