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Hyperspectral Imagery For Various Crop Growth Information Extraction, Haibo Yao, Lei Tian, Marvin Paulsen, Amy L. Kaleita, Mukti Singh
Hyperspectral Imagery For Various Crop Growth Information Extraction, Haibo Yao, Lei Tian, Marvin Paulsen, Amy L. Kaleita, Mukti Singh
Amy L. Kaleita
Aerial hyperspectral imagery has potential for agriculture applications. The objective of this study is to identify significant wavelength ranges (image bands or band combinations) from hyperspectral imagery for different field information extraction. The field information include corn nitrogen content, plant population, yield, and grain quality such as oil, protein, and extractable starch. All the images were processed using the GA-SPCA (Genetic Algorithm based Selective Principal Component Analysis) method . T he GA-SPCA method can filter out significant image bands and reduce the image data dimension to only one principle component image through a cascade two-step dimension reduction process. It was …
Hyperspectral Imagery For Various Crop Growth Information Extraction, Haibo Yao, Lei Tian, Marvin Paulsen, Amy Kaleita, Mukti Singh
Hyperspectral Imagery For Various Crop Growth Information Extraction, Haibo Yao, Lei Tian, Marvin Paulsen, Amy Kaleita, Mukti Singh
Amy L. Kaleita
Aerial hyperspectral imagery has potential for agriculture applications. The objective of this study is to identify significant wavelength ranges (image bands or band combinations) from hyperspectral imagery for different field information extraction. The field information include corn nitrogen content, plant population, yield, and grain quality such as oil, protein, and extractable starch. All the images were processed using the GA-SPCA (Genetic Algorithm based Selective Principal Component Analysis) method . T he GA-SPCA method can filter out significant image bands and reduce the image data dimension to only one principle component image through a cascade two-step dimension reduction process. It was …
Additive Main Effects And Multiplicative Interactions Analysis Of Yield Performances In Bread Wheat Genotypes Across Environments, Yüksel Kaya, Çeti̇n Palta, Seyfi̇ Taner
Additive Main Effects And Multiplicative Interactions Analysis Of Yield Performances In Bread Wheat Genotypes Across Environments, Yüksel Kaya, Çeti̇n Palta, Seyfi̇ Taner
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the yield performances of 20 bread wheat genotypes across six environments in Central Anatolia, Turkey, in the 2000-2001 growing season. The experimental layout was a randomized complete block design with four replications. Additive main effects and multiplicative interactions analysis (AMMI) indicated that the yield performances of genotypes were under the major environmental effects of genotype by environmental interactions. The first two principal component axes (PCA 1 and 2) were significant (p < 0.01) and cumulatively contributed to 78.64% of the total genotype by environment interaction. A biplot generated using genotypic and environmental scores of the first two AMMI components also showed that genotypes with larger PCA 1 and lower PCA 2 scores gave high yields (stable genotypes), and genotypes with lower PCA 1 and larger PCA 2 scores had low yields (unstable genotypes), as in the sites tested.
Effects Of Girdling, Ga3 Applications And Additional Nutrient Applications On Fruit Yield, Fruit Set And Fruit Size In The Clementine Mandarin, Turgut Yeşi̇loğlu, Ebru Cücü Açikalin
Effects Of Girdling, Ga3 Applications And Additional Nutrient Applications On Fruit Yield, Fruit Set And Fruit Size In The Clementine Mandarin, Turgut Yeşi̇loğlu, Ebru Cücü Açikalin
Turkish Journal of Agriculture and Forestry
In small fruit species, like the mandarin, fruit size is lower in Turkey than in other countries and this has a negative effect on their marketing. There are problems with fruit yield and size in the Clementine mandarin, which is a commonly grown mandarin cultivar in Turkey. To solve these problems, various studies have been carried out. Girdling is one of the methods studied and it had positive effects on fruit yield and size without lowering the fruit quality. However, fruit yield and fruit size were reduced to previous levels if the treatment was repeated over a long period. In …
Ec02-106 Nebraska Grain Sorghum Hybrid Tests, 2002, Lenis Alton Nelson, Roger Wesley Elmore, Robert N. Klein, David D. Baltensperger
Ec02-106 Nebraska Grain Sorghum Hybrid Tests, 2002, Lenis Alton Nelson, Roger Wesley Elmore, Robert N. Klein, David D. Baltensperger
University of Nebraska-Lincoln Extension: Historical Materials
This circular is a progress report of grain sorghum trials conducted to obtain yield land other information for some of the hybrids being marketed. The 2002 season was the 45th year that private hybrids were included in these trials. Seed producers supported test through fee payments. Cooperating were the Agronomy Department and the South Central, West Central and Panhandle Research and Extension Centers. Conduct of experiments and publication of results is a joint effort of the Agricultural Research Division and the Cooperative Extension Service.
Ec02-178 Precision Agriculture: On-The-Go Vehicle-Based Soil Sensors, Viacheslav I. Adamchuk, Paul J. Jasa
Ec02-178 Precision Agriculture: On-The-Go Vehicle-Based Soil Sensors, Viacheslav I. Adamchuk, Paul J. Jasa
University of Nebraska-Lincoln Extension: Historical Materials
Imagine that you are entering an unknown field and would like to estimate the productivity of the unfamiliar soil. You may pick up a handful of soil to evaluate its color and texture. You also can feel how difficult it is to break a clod apart, roll it into a ball or press out a ribbon. After repeating this procedure at different field locations, soil depths and times, you get a feeling of both spatial and temporal soil variability. Some of this variability can explain the non-uniformity of crop yield. If you collect soil samples and send them to a …
Selection Of Promising Jojoba (Simmondsia Chinensis Link Schneider) Types In Terms Of Yield And Oil Content, Sali̇h Ülger, Özgür Akdeşi̇r, İbrahi̇m Baktir
Selection Of Promising Jojoba (Simmondsia Chinensis Link Schneider) Types In Terms Of Yield And Oil Content, Sali̇h Ülger, Özgür Akdeşi̇r, İbrahi̇m Baktir
Turkish Journal of Agriculture and Forestry
This experiment was carried out to determine the yield and oil contents of jojoba populations that were derived from a base population raised from seed in Antalya between 1999 and 2001. In the first year 59 types were evaluated, and 19 promising types were determined. In the second and third years experiments were conducted on these 19 types. Chilling, insect and disease damage was not seen during the experiment periods. However, some plants were dead where water ponded after heavy rains. The mature seeds were hand collected after they fell onto the soil in September, and their yield and oil …