Widescale testing of the Crop-meter for site-specific farming

被引：28

作者：

Ehlert, D. ^{[1
]}

Dammer, K. -H. ^{[1
]}

机构：

[1] Leibniz Inst Agr Engn Potsdam Bornim ATB, Div Engn Crop Prod, D-14469 Potsdam, Germany

来源：

PRECISION AGRICULTURE | 2006年 / 7卷 / 02期

关键词：

variable rate application; crop biomass density; crop resistance; sensor; Crop-meter;

D O I：

10.1007/s11119-006-9003-z

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

A sensor for measuring crop biomass density has been designed and developed to meet the demands for practical use in site-specific farming. The mechanical sensor named 'Crop-meter' is based on the pendulum principle. The suitability and measuring stability of the Crop-meter has been confirmed under field conditions in different regions of Germany. Significant correlations were obtained between Crop-meter signals and soil electrical conductivity (R-2 = 0.16-0.66) and grain yield (R-2 = 0.42-0.57). To test the suitability of the Crop-meter for site-specific management, it was used to control variable application rates for nitrogen fertiliser, growth regulators and fungicides in real time. A small increase in yield (3.1%) as well as reduced application rates for agrochemicals (14.6% nitrogen fertilisers; 23.1% fungicides and growth regulators) were proved in large-scale trials.

引用

页码：101 / 115

页数：15

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