the purpose of this paper is to investigate causality relationship between emission of carbon dioxide, the level of national income and energy consumption in iran consumption of fuel fossil as an input of production or as a final consumption which produces significant amount of pollution such as green house gases in the world. c02 emission is the most important green – house gases which has the...

abstract many agricultural researches have been performed to improve soil productivity. nitrogen (n) and phosphorus (p) are essential elements which are utilized by the plants in large amounts. phosphorus can be provided by applying chemical fertilizers. microorganisms convert insoluble phosphate to the soluble form and some bacteria such as rhizobacteria play an important role in this process....

chlorophyll fluorescence induction is a rapid and noninvasive technique for measuring photosynthetic electron transport in plants. chlorophyll fluorescence measurements were performed under greenhouse condition to characterize how the fluorescence induction curves (kautsky curve) and its parameters were affected by metribuzin in susceptible and resistant junglerice (echinochloa colona (l.) link...

Pada pertanian yang masih melakukan proses secara tradisional perawatan tanaman dilakukan manual dan sangat bergantung dengan kondisi iklim cuaca. Untuk mengatasi hal tersebut perlu adanya suatu sistem dapat mengontrol memantau ruangan pada greenhouse. Alat pengontrol menggunakan PLC (Programmable Logic Controller), serta alat pendukung lainnya seperti lampu grow light, sensor NPK. Dari hasil p...