The demand for corn is increasing in Asia for feed and biofuel. It is grown in the rice-corn cropping system. During harvest of corn, however, seeds drop on the soil surface and become problems as volunteer corn seedl...The demand for corn is increasing in Asia for feed and biofuel. It is grown in the rice-corn cropping system. During harvest of corn, however, seeds drop on the soil surface and become problems as volunteer corn seedlings in the subsequent dry-seeded rice crop, in which the suppressive effect of standing water is absent. A study was conducted in screenhouse and field conditions to evaluate the effect of rice herbicides on the management of volunteer corn seedlings. In the screenhouse experiment, bispyribac-sodium at 0.030 and 0.045 kg·ai·ha-1 provided complete control of corn seedlings. Fenoxaprop + ethoxysulfuron and penoxsulam + cyhalofop did not provide effective control of corn seedlings. In the field, the sole application of bispyribac and sequential application of oxadiazon and bispyribac suppressed corn biomass by 60%-82% and 89%-91%, respectively, as compared with the nontreated control. The results of this study demonstrate that, in the absence of other management strategies, volunteer corn seedlings in dry-seeded rice systems can be managed by using bispyribac-sodium.展开更多
Greenhouse environmental management,seedling bed scheduling,and fertilizer and water management are the core technologies of seedling nursery.Precision management and control of the whole production process guarantees...Greenhouse environmental management,seedling bed scheduling,and fertilizer and water management are the core technologies of seedling nursery.Precision management and control of the whole production process guarantees high grated seedling quality.In order to improve management efficiency of grafted watermelon seedling production and seedling quality,this paper designs and develops a grafted watermelon seedling production management system based on process control methods by process control strategy,seedling bed planning design,and handheld device technology.展开更多
文摘The demand for corn is increasing in Asia for feed and biofuel. It is grown in the rice-corn cropping system. During harvest of corn, however, seeds drop on the soil surface and become problems as volunteer corn seedlings in the subsequent dry-seeded rice crop, in which the suppressive effect of standing water is absent. A study was conducted in screenhouse and field conditions to evaluate the effect of rice herbicides on the management of volunteer corn seedlings. In the screenhouse experiment, bispyribac-sodium at 0.030 and 0.045 kg·ai·ha-1 provided complete control of corn seedlings. Fenoxaprop + ethoxysulfuron and penoxsulam + cyhalofop did not provide effective control of corn seedlings. In the field, the sole application of bispyribac and sequential application of oxadiazon and bispyribac suppressed corn biomass by 60%-82% and 89%-91%, respectively, as compared with the nontreated control. The results of this study demonstrate that, in the absence of other management strategies, volunteer corn seedlings in dry-seeded rice systems can be managed by using bispyribac-sodium.
基金the National High Technology Research and Development Program (863) of China(No.2012AA101903)the Shanghai Municipal Agriculture Commission Program(No.20100401)+1 种基金the Science and Technology Commission of Shanghai Municipality Program(No.11DZ1960203)the Shanghai Watermelon and Melon Industry Technology System and the Shanghai Leading Academic Discipline Project Program(No.B209)
文摘Greenhouse environmental management,seedling bed scheduling,and fertilizer and water management are the core technologies of seedling nursery.Precision management and control of the whole production process guarantees high grated seedling quality.In order to improve management efficiency of grafted watermelon seedling production and seedling quality,this paper designs and develops a grafted watermelon seedling production management system based on process control methods by process control strategy,seedling bed planning design,and handheld device technology.
