Rice Ratoon Crop: A Sustainable Rice Production System for Tropical Hill Agriculture

Abstract

Increasing and sustainable production of rice in tropical hill area is facing various problems where rice ratooning can overcome the limitations. In this study; 22 rice entries were transplanted into experimental tank placed in the hill slope following Completely Randomized Design with five replications to asses' agronomic performance of main crop and ratoon crop where Entry 13 demonstrated highest grain yield per plant (42.06 ± 1.2 gm) as main crop, as well as ratoon crop (3.37 ± 0.28 gm); Entry 19 produced lowest grain yield per plant (5.01 ± 0.31 gm) as main crop and Entry 31 as ratoon crop (0.47 ± 0.03 gm). The grain yield per plant of both the main and ratoon crop demonstrated significant (** at 5% level and *** at 1% level) positive correlation with number of tiller per plant (0.64 ** and 0.52); number of fertile tiller per plant (0.66 ** and 0.63 **); grain per panicle (0.72 ** and 0.53); fertile grain per panicle (0.80 *** and 0.63) and thousand-grain weight (0.66 ** and 0.54). The Duncan Multiple Range test and Analysis of Variance also confirmed the different grouping and significant differences of productivity and agronomic performances of the entries. The information of this investigation will helps the rice breeder as well as marginal rice farmers to consider rice ratooning as an important practice for sustainable rice production in tropical agriculture system for maximum gains.

Integrated Water and Nitrogen Management Practices to Enhance Yield and Environmental Goals in Rice–Ratoon Rice Systems

“…Ratooning rice is the cultivation practice of having a second harvest in one cropping season, based on the tillers originating from the stubble of the previous main crop. This practice is widely used in China, the United States, Japan, Philippines, India, Thailand and other countries where there are surplus photothermal resources left after one‐season rice (Faruq et al, 2014). The area for ratooning rice in China is about 550,000 ha, mainly distributed in southwest (mainly in Sichuan and Chongqing), central (mainly in Hubei), eastern (mainly in Fujian, Jiangxi, and Anhui), and southern (mainly in Guangxi) China (Duan et al, 2018).…”

Ratoon Systems in Tidal Lowland: Study of Groundwater Dynamics and the Change of Nutrient Status on Rice Growth

“…In this phase, it covers the early development of panicles (40-50 days after planting), fulfilling the phase (50-60 days after planting), and flowering (60-80 days after planting). A research by Faruq et al (2014) showed that ratoon paddy can be harvested in 90 days, while the study conducted by Setiawan et al (2014) revealed that it can be harvested in 96 days. This situation is characterized by the formation and growing of panicles.…”

“…Paddy plants usually need -20 cm to -30 cm water level from the ground surface. It is related to the plant roots in penetrating the soil to uptake water for the plant (Faruq, Taha, & Prodhan, 2014). So far, this ratoon paddy cultivation technique has not been developed in the tidal lowland area.…”

Effects of the Double-Cutting Method for Ratooning Rice in the SALIBU System under Different Soil Moisture Conditions on Grain Yield and Regeneration Rate

“…The labor and seed inputs for ratoon rice cropping were reduced by 29% and 52%, respectively, compared with double cropping systems [3,4]. However, many studies have concluded that ratoon rice exhibits a low-yield performance, approximately 40-60% that of the main crop [5,6]; thus, low and unstable grain yield has limited the wide adoption of ratoon cropping.…”