Weed development in spring wheat after contrasting soil tillage and nitrogen management

Khorasan wheat (Triticum turgidum ssp. turanicum (Jakubz.)) is an ancient tetraploid spring wheat variety originating from northeast parts of Central Asia. This variety can serve as a full-fledged alternative to modern wheat but has a lower yield than modern varieties. It is commonly known that wheat growth is influenced by soil tillage technology (among other things). However, it is not known how soil tillage technology affects ancient varieties. Therefore, the main objective of this study was to evaluate the influence of different soil tillage technologies on the growth of the ancient Khorasan wheat variety in comparison to the modern Kabot spring wheat (Triticum aestivum) variety. The trial was arranged in six small plots, one half of which was sown by the Khorasan wheat variety and the other half of which was sown by the Kabot wheat variety. Three soil tillage methods were used for each cultivar: conventional tillage (CT) (20–25 cm), minimum tillage (MTC) with a coulter cultivator (15 cm), and minimization tillage (MTD) with a disc cultivator (12 cm). The soil surface of all of the variants were leveled after tillage (harrows & levelling bars). An unmanned aerial vehicle with multispectral and thermal cameras was used to monitor growth during the vegetation season. The flight missions were supplemented by measurements using the GreenSeeker hand-held sensor and plant and soil analysis. The results showed that the Khorasan ancient wheat was better suited the conditions of conventional tillage, with low values of bulk density and highvalues of total soil porosity, which generally increased the nutritional value of the yield in this experimental plot. At the same time, it was found that this ancient wheat does not deplete the soil. The results also showed that the trend of developmental growing curves derived from different sensors was very similar regardless of measurement method. The sensors used in this study can be good indicators of micronutrient content in the plant as well as in the grains. A low-cost RGB camera can provide relevant results, especially in cases where equipment that is more accurate is not available.

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Nitrogen Management Effects on Hard Red Spring Wheat Yield and Quality

CSA News ◽

10.2134/csa2018.63.1109 ◽

2018 ◽

Vol 63 (11) ◽

pp. 9-9

Keyword(s):

Spring Wheat ◽

Wheat Yield ◽

Nitrogen Management ◽

Hard Red Spring Wheat ◽

Yield And Quality ◽

Management Effects

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Effect of Soil Tillage Systems and Fertilizers on Agrophysical Properties of Soil and the Yield of Spring Wheat in the Volga-Vyatka Regi

Agricultural science Euro-North-East ◽

10.30766/2072-9081.2018.66.5.90-97 ◽

2018 ◽

Vol 66 (5) ◽

pp. 90-97 ◽

Cited By ~ 2

Author(s):

Yu.A. Bogomolova ◽

◽

A.P. Sakov ◽

A.V. Ivenin ◽

◽

...

Keyword(s):

Spring Wheat ◽

Soil Tillage ◽

Tillage Systems ◽

Properties Of Soil

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Nitrogen Management Strategies to Improve Yield and Dough Properties in Hard Red Spring Wheat

Agronomy Journal ◽

10.2134/agronj2018.02.0075 ◽

2018 ◽

Vol 110 (6) ◽

pp. 2417-2429 ◽

Cited By ~ 6

Author(s):

Geomar M. Corassa ◽

Fernando D. Hansel ◽

Romulo Lollato ◽

João L. F. Pires ◽

Rai Schwalbert ◽

...

Keyword(s):

Spring Wheat ◽

Management Strategies ◽

Nitrogen Management ◽

Hard Red Spring Wheat ◽

Dough Properties

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PAPER PRESENTED AT INTERNATIONAL WORKSHOP ON INCREASING WHEAT YIELD POTENTIAL, CIMMYT, OBREGON, MEXICO, 20–24 MARCH 2006 Reduced nitrogen and improved farm income for irrigated spring wheat in the Yaqui Valley, Mexico, using sensor based nitrogen management

The Journal of Agricultural Science ◽

10.1017/s0021859607006995 ◽

2007 ◽

Vol 145 (3) ◽

pp. 215-222 ◽

Cited By ~ 41

Author(s):

J. I. ORTIZ-MONASTERIO ◽

W. RAUN

Keyword(s):

Technology Transfer ◽

Spring Wheat ◽

Nitrogen Use Efficiency ◽

Nitrogen Management ◽

Farm Income ◽

Wheat Crop ◽

Nitrogen Use ◽

Yaqui Valley ◽

Crop Cycle ◽

Use Efficiency

Wheat nitrogen-use efficiency in the Yaqui Valley has been estimated at about 0·31. The nitrogen that is not recovered by the crop has important environmental costs that have regional and global consequences. In addition, these nitrogen losses represent an important reduction in farm income. The objective of the present work was to validate a technology that includes the use of N-rich strips together with the GreenSeeker™ sensor and a crop algorithm in farmers' fields with the ultimate goal of improving nitrogen-use efficiency through site-specific nitrogen management in irrigated spring wheat. During the wheat crop cycle 2002/03 and 2003/04, 13 validation experiments of c. 1 ha each were established in farmers' fields in the Yaqui Valley. After the validation phase, during the wheat crop cycle 2005/06, eight technology transfer trials were established in farmers' fields; these had on an average an area of 10 ha each. Both the validation and technology transfer trials compared the farmers' conventional nitrogen management use v. the use of the N-rich strip together with the Green Seeker™ sensor and a crop algorithm to derive N recommendations for each individual field. The results of the validation trials showed that on an average over all locations, farmers were able to save 69 kg N/ha, without any yield reduction. At the price of US$0.9 per unit of N in the valley when these experiments were established, this represented savings to the farmers of US$62/ha. The technology transfer trials demonstrated that, in large commercial areas with an average size of 10 ha, farmers could improve their farm income by US$50/ha, when using sensor based N management. The combination of the N-rich strip, together with the use of the sensor and a crop algorithm to interpret the results from the sensor, allowed farmers to obtain significant savings in N use and thus in farm profits. Farm income was increased by US$56/ha, when averaged over all trials in all years.

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