Asynchronuos rice production system of Nueva Vizcaya (Philippines) in relation to pest and crop yields
2017
Sosa, N.S. | Amar, G.B. | dela Cruz, A.L. Jr. | Lunag, Z.F.T. | Domingo, C.S.
Corn productivity is influenced by factors that affect both the crop and its environment. Interrelationships of individual species convert their effects into measurable product that is yield that rely on how much soil nutrients are provided to crops and how much water enhanced the growth of crops. Rice pests like insects, diseases, weeds and rodents affect yields directly and indirectly at various crop stages. Nueva Vizcaya has the most unusual rice cropping pattern among the provinces in Region 2. Because of its abundant water source, Asynchronuos Cropping existed over the years. Despite this practice, there is no reported pest outbreak in the past years. The average yield has remained at 4.52 t/ha, which is 2% higher than Isabela (4.46 t/ha) a major rice producing province in the region. The project will look into the pest profile and farmers' pest management practices and other factors attributing to the high yield of Nueva Vizcaya. Initial results showed that farmers in the Asynchronous areas have no consistent planting schedule as long as water is available. A total of 32 inbred varieties use twice or thrice prevailed in a year with an average yield of 4.22 t/ha to 5.53 t/ha, ninety-five percent of farmers used certified seeds. The common pests observed were rice stemborer, rice bug, rice whorl maggots, cutworms, GLH, BPH, leaffolfer, golden apple snail, rodents and kiwet (rice field eel). Tungro, yellowing of leaves, stunted plants, reddening of leaves and BLB were the prevalent diseases. Weeds observed were grasses, sedges and broadleaves. A very diverse use of chemicals was noted. Farmers do not only use one active ingredient but two up to five active ingredients per pest.
显示更多 [+] 显示较少 [-]