NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 41 to 50 of 600 (0.027 seconds)
41

Detecting and quantifying the extent of desertification and its impact in the semi-arid Sub-Saharan Africa a case study of the Upper East Region, Ghana /

Owusu, Alex B. January 2009 (has links)
Thesis (Ph.D.)--George Mason University, 2009. / Vita: p. 287. Thesis co-directors: Sheryl L. Beach, Guido Cervone. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Earth Systems and Geoinformation Sciences. Title from PDF t.p. (viewed Oct. 11, 2009). Includes bibliographical references (p. 267-286). Also issued in print.
Desertification Crop yields
42

Yield-Limiting Factors in North Dakota Soybean Fields

Stanley, Jordan January 2017 (has links)
Average soybean [Glycine max (L.) Merrill] yields in North Dakota remain below north central USA averages, and crop yield potentials. The effect of planting date (PD), cultivar relative maturity (RM), and seeding rate (SR), on yield, were evaluated in 821 producer fields in 2014-2016 seasons. Crop management varied by location. State average PD was 19 May, and planting after 1 May reduced yield average 0.4% d-1. Planting a cultivar with 0.1 RM earlier than recommended reduced yield by 1.3%. Producers estimated seedling mortality at 10%; when observed, it was 12.3%. An additional 7.9% reduction of established population occurred in-season. In-season plant reductions of 4.5% were also observed in research trials. North Dakota producers should plant closer to 1 May if conditions are favorable, select latest-maturing cultivars adapted for area, maximize established plant population relative to seeding rate, and determine causes of in-season plant reductions to adapt management practices if necessary.
Soybean
Crop yields
43

Management and cultivar effects on the yield and grain protein of spring barley (Hordeum vulgare L.)

Bulman, Patrick G. M. January 1991 (has links)
No description available.
Barley -- Yields.
Proteins.
44

Yield response of spring barley, Hordeum vulgare L., to plant density and nitrogen fertilization.

Rentería-Delmar, Guillermo. January 1981 (has links)
No description available.
Crop yields
Barley
45

Influence of barley, red clover and weeds on timothy stands

Lemieux, Claudel January 1986 (has links)
No description available.
Intercropping.
Timothy-grass -- Yields.
46

A genetic analysis of harvest index in barley (Hordeum vulgare L. emend. Lam.) /

El-Zayadi, Fawzi January 1985 (has links)
No description available.
Barley -- Genetics.
Crop yields.
47

Yield-limiting processes in cowpea (Vigna unguiculata (L.) Walp.) cultivar Vita-5

Argall, John F. January 1983 (has links)
No description available.
Cowpea.
Crop yields.
48

Effect of early season row cover protection on the growth and yield of snap beans

Kimani, K. Stephen January 1988 (has links)
No description available.
Beans -- Growth.
Beans -- Yields.
49

Factors influencing rice production efficiency in Ban Home, Laos

Hem Inthavong, Khamla. January 2006 (has links)
No description available.
Rice -- Yields -- Laos.
50

The effect of inter- and intra-row spacings on the leaf area index, light interception and various agronomic characters of Zea Mays L.

Msambo, Romano Bundala. January 1966 (has links)
No description available.
Agronomy.
Crop yields
Grain

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