One of the challenges harnessing higher productivity levels and sustainability agriculture related to N fertilization is in expanding soil N2O emissions, which has become a serious issue recent years. Recent studies suggest that biochar may be solution this problem, but there still knowledge gap application rates its reapplication Central Europe; therefore, study, we investigated effect (initia...

A field experiment was carried out in the fields of college agricultural engineering sciences, university Baghdad during fall season 2021, order to find which cultivated genotypes maize are efficient under nitrogen fertilization. The applied according a RCBD (split plot design with three replications). (Baghdad, 5018 and Sarah) supplying levels fertilizer, N1 (100 kg/ha), N2 (200 kg/ha) N3 (300...

The aims of this study were: (1) to determine the response growth and yield purple eggplant variety Yufita F1 application Mutiara NPK fertilizers KayaBio biological their interactions (2) obtain appropriate doses fertilizer produce good variety. This research was conducted from March June 2020 at Experimental Garden East Kalimantan Institute for Agricultural Research Technology, Jalan Gunung Li...

Fertilizer application control in reason is the key technology to improve operation quality, reduce fertilizer pollution, and cut down costs of production. A control system of variable rate fertilizer is developed based on microcontroller chip in the paper. The system can automatically control flow dosage by adjusting feed gate opening size and changing hydraulic motor speed of fertilizer conve...

This note demonstrates that a certain class of stochastic problems for determination of optimal fertilizer application rates in the presence of fertilizer carry-over can be simplified to static, certainly equivalent problems. Conditions required for certainty equivalence to hold are: (1) fertilizer carry-over is agronomically equivalent to applied fertilizer; and (2) some addition of fertilizer...

in order to investigation of nitrogen fertilizer split application effect on quantity yield and grain quality of rice varieties, an experiment was carried out based on rcbd design as split plot experiment in three replications in langroud in 2006. mainand sub factor were variety (hashemi and bahar 1) and five nitrogen fertilizer split application (split of 150 kg.ha-1 n at transplanting, stemmi...