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11	The profits from the use of fertilizers Turlington, John Edwin. January 1912 (has links) Minor Thesis (Ph. D.)--Cornell University, June 1912. / Typescript. Fertilizers. Crop yields.
12	Cattle manure I. Effect on crops and soils; II. Retention properties for Cu, Mn, and Zn. Hensler, Ronald Fred, January 1970 (has links) Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography. Fertilizers. Manures. Crop yields.
13	Crop yield response to drought in Alabama Kreps, Tyler Leigh, Hite, Diane, January 2009 (has links) Thesis--Auburn University, 2009. / Abstract. Vita. Includes bibliographical references (p. 65-71). Crop yields Agriculture and state
14	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
15	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
16	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
17	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.
18	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.
19	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
20	Row width and density effects on yield, growth, and light interception in soybeans. Willcott, Julie 01 January 1983 (has links) (PDF) No description available. Crop yields Soybean.

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