Paddy ecosystem

Rice cultivation is taken in flooded soil condition. This creates an anaerobic environment and harbours different group of anaerobes. The continued submergence of soil provides a reducing environment and effects a build-up of anaerobic ecosystem in which two unique processes namely methane emission and reductive transformation of nitrogen occur. But the role played by specific group of anaerobes with respect to nitrogen transformation is still obscure. A study was undertaken to assess the different groups of anaerobes in nitrogen transformation in flooded rice soils.

10p trinhthamhodang1215 23-09-2020 11 2   Download

Ecological engineering and ecofriendly pest and disease management strategies in paddy is the need of the hour because of reduction in natural enemies population in rice ecosystem due to indiscriminate use of pesticides. Ecological Engineering and ecofriendly pest and disease management strategies in paddy was demonstrated in the farmers’ field as Front Line Demonstration in Nagapattinam district of Tamil Nadu. In the demonstration plot the dead heart symptoms was 3.63% and white ear was 0.86% compared to 13.29% and 2.

7p caygaocaolon7 18-09-2020 14 0   Download

Methanol oxidizing organisms not only reduce atmospheric methanol concentration but also play a major role in enhancing methane oxidation through cross-feeding in synergism with methanotrophs. Possession of plant growth promoting (PGP) attributes in methanol oxidizing bacteria will prove to be a worthy candidate for developing novel biofertilizers having dual ability of plant growth promotion and reducing methane emission to a certain extent.

12p nguaconbaynhay7 15-08-2020 14 1   Download

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

A study on biodiversity of agrobiont spiders was carried out at N. M. College of Agriculture, Navsari Agricultural University (NAU) campus Navsari, Gujarat, India. A total 48 species of agrobiont spiders were recorded belonging to 34 genera and 12 families from different ecosystems i.e., paddy, sugarcane, maize, mango and banana. Among them 33.33 per cent species belongs to family Araneidae, 29.17 per cent from Salticidae, 8.33 per cent species belongs to family Oxyopidae, 6.25 per cent species belongs to family Clubionidae, 4.

12p nguaconbaynhay5 16-05-2020 10 1   Download

The main aims of the present study were documentation of species, habitats and other ecological behaviors of Mantids in district Navsari, Gujarat, India during August 2016 - July 2017. Total 21 species of mantids belongs to 15 genera, from five families were recorded from different localities of NAU campus. Among them 21 species were belongs to five families viz., Mantidae (12), Hymenopodidae (2), Liturgusidae (1) Empusidae (3) and Toxoderidae (3).

6p nguaconbaynhay5 11-05-2020 12 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