Paddy crop eco-system

In tropical countries rice has been identified as one of the crops that are particularly susceptible to the negative impacts of pesticide use. In addition to the physicochemical nature of the pesticide, tropical climatic conditions and agricultural practices play important roles in determining the fate and distribution of pesticides in the tropical paddy field ecosystem.

22p nguathienthan5 04-06-2020 7 0   Download

An experiment was carried out to study the effect of mulches and irrigation scheduling on the growth and yield of ZT potato under rain fed low land rice ecosystem. The experiment was laid out in split plot design taking three levels of irrigation viz. Single irrigation at 40 DAP (I1), Splash irrigation at 15 days interval (I2) and Irrigation at IW/CPE = 0.6 (IW = 4cm) (I3) in the main plots and three types of mulch management viz.

6p trinhthamhodang1213 02-06-2020 35 1   Download

In paddy crop ecosystem fourteen leafhopper species were collected, identified and described viz., Balclutha saltuella (Kirschbaum), Balclutha thea (Kirschbaum), Cicadulina bipunctata (Melichar), Cofona spectra (Distant), Cofona unimaculata (Signoret), Empoascanara defecta (Dworakowska), Empoascanara indica (Datta), Empoascanara prima (Distant), Exitianus indicus (Distant), Exitianus nanus (Distant), Maiestas dorsalis (Motschulsky), Maiestas pruthii (Metcalf), Nephotettix nigropictus (Stal) and Nephotettix virescens (Distant).

12p cothumenhmong5 17-05-2020 7 1   Download

Land use cropping pattern are altering the hydrologic system and have potentially large impacts on water resources. The present study aims at analyzing the impact of various cropping patterns on water quality parameters of rivers located at Pantnagar, for a duration of three months from August, 2017 to October, 2017. Three sites Barour (S1), Beni (S2) and Chakpheri (S3) were selected which exhibits different cropping pattern in their catchment area i. e. Paddy (Oryza sativa), Dhaincha (Sesbania bispinosa) and Maize (Zea mays) respectively.

10p caygaocaolon2 11-03-2020 11 0   Download

Global climate change is a change in long term weather pattern that characterised by the region of the world. Human activities, especially the burning of the coal and oil, have warmed the earth by increasing the concentration of the heat trapping gases. The impact of warming can be observed in changing weather patterns. Climate change is already affecting human health, ecosystem. Agroforestry has been recognized as a means to reduce CO2 emissions as well as enhancing carbon sinks.

6p chauchaungayxua3 07-02-2020 19 0   Download