Cover Crops and Mechanical Scarification in the Yield and Industrial Quality of Upland Rice

Abstract

Mechanical soil scarification and cover crops cultivation are promising tools to minimize surface soil layer compaction in no-tillage systems. The objective of the current study was to evaluate the effects of mechanical soil scarification associated with predecessor and successive growth of cover crops on grain yield and industrial quality of upland rice in a no-tillage system. The research was carried out in randomized block design in a 5 × 2 factorial scheme with four replications in a Rhodic Haplustox soil with a clayey texture. The treatments consisted of five cover crops (Cajanus cajan, Crotalaria juncea, Urochloa ruziziensis, Pennisetum glaucum and fallow) andmechanical soil scarification (without and with). The fallow and C. cajan as a cover crop in mechanical soil scarification increased number of panicles plant−1 while cultivation of C. cajan, P. glaucum and C. juncea as covers crop in without scarification increased number of grains panicle−1, total number of grains panicle−1 and filled grains. Rice milling yield was increased in mechanical soil scarification regardless of the cover crop as well as scarification, and C. cajan as covers crop has increased grain yield of upland rice.

The link between changing in host carbon allocation and resistance to Magnaporthe oryzae : a possible tactic for mitigating the rice blast fungus

“…In addition, adding green manure or cover crops improves soil fertility and microbial activity, which affects how carbon is allocated in the rhizosphere. 84 , 85 As a result of these actions, the soil microbiome will become healthier, which will help strengthen the plant’s defense mechanisms. 86 Furthermore, carbon availability is impacted by adjusting nutrient management techniques, such as fertilizer and organic amendment application.…”