نتایج جستجو برای: lysimeter

تعداد نتایج: 519  

Journal: :Agronomy 2022

Lysimetric and eddy covariance techniques are commonly used to directly estimate actual crop evapotranspiration (ETa). However, these technologies costly, laborious, require skills which make in situ ET estimation difficult, particularly developing countries. With this mind, an attempt was made determine ETa stagewise coefficient (Kc) values of transplanted puddled rice using a modified non-wei...

حمیدرضا فولادمند, , سید حمید احمدی, , جانب ا... نیازی, , ژاله وزیری, ,

A research was conducted in Fars province Agricultural Research Center in Zarghan area from 1999 to 2002 to determine the water requirement and crop coefficient of wheat, applying lysimeter. The results indicated that the water requirements of wheat were 720, 712 and 674 mm in the years of 1999-2000, 2000-2001 and 2001-2002, respectively. Using Penman-Monteith method for estimating reference ...

Journal: :Jurnal Ilmiah Rekayasa Pertanian dan Biosistem 2022

Transpirasi merupakan suatu proses pelepasan air yang disertai dengan nutrisi mineral dari akar tanaman ke pucuk daun melalui fotosentesis. tinggi akan menyebabkan kekurangan terutama di sekitar perakaran. Dengan demikian, transpirasi ini dapat dijadikan pertimbangan untuk menyatakan status ketersediaan pada tanaman. Tujuan penelitian adalah rancang bangun alat lysimeter berbasis IoT mengukur e...

2017
Chiara Corbari Giovanni Ravazzani Marta Galvagno Edoardo Cremonese Marco Mancini

The Food and Agricultural Organization (FAO) method for potential evapotranspiration assessment is based on the crop coefficient, which allows one to relate the reference evapotranspiration of well irrigated grass to the potential evapotranspiration of specific crops. The method was originally developed for cultivated species based on lysimeter measurements of potential evapotranspiration. Not ...

2006
Christine Loos Sabine Grundmann Eckart Priesack

Wie in der EU-Freisetzungsrichtlinie (2001/18/EG) gefordert, ist ein Monitoring der ökologischen Auswirkungen von gentechnisch veränderten Pflanzen (GVP) notwendig. Der Anbau von herbizid-resistenten, gentechnisch veränderten Pflanzen kann zu einem mehrmals jährlichen und mehrjährigen Einsatz eines Herbizids führen. Die Zunahme an Herbizid-Applikationen kann zahlreiche Risiken bergen, wie Verän...

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