Tag: productivity

Performance of sweet potato varieties across environments in Kenya – IJAAR

J.K. Mwololo, M. W. K. Mburu, P.W. Muturi

Pwani University College, P.O.Box 195, 80108 Kilifi, Kenya

South Eastern University College, P. O Box 170-90200, Kitui, Kenya

University of Nairobi, P.O.Box 29053, 00625, Nairobi, Kenya

Key words: Disease incidence, Ipomoea batatas, productivity, dual, selection.

Abstract

Sweetpotato is an important food, feed and cash crop in Eastern Africa but its adoption as a dual purpose crop has not been exploited. Varieties giving high tuber and vine yields would be ideal for small scale farmers who are the predominant producers. Continue reading Performance of sweet potato varieties across environments in Kenya – IJAAR

Effect of intercropping bambara groundnud (Vigna subterranean (L.) Verdc) and maize (Zea mays L.) on the yield and the yield component in woodland savannahs of Côte d’Ivoire

By Kouassi N’dri Jacob,Tonessia Dolou Charlotte, Kouassi Kouadio Henri, Zoro Bi Irie Arsène

Université Jean Lorougnon Guedée,UFR Agroforesterie, Bp 150 Daloa, Côte d’Ivoire

Université Nangui Abrogoua,UFR Sciences De La Nature, 02Bp 801 .Abidjan,Côte d’Ivoire

Key words: Productivity, intercropping, yield, the Land Equivalent Ratio.

Abstract

crops_maizeThe development of simple and profitable crop combinations for increasing crop productivity is one of the ways to improve these systems. A good management system combination to reduce overhead and underground competitions for the resources was the main objective that motivated the conduct of this experiment. Experiments are described in which the possible yield benefits of intercropping bambara groundnut [Vigna subterranea (L.) Verdc)] and maize (Zea mays L.) were determined under dryland conditions in Manfla (Côte d’Ivoire). A replacement series of sole crop bambara groundnut, bambara groundnut and maize (75B/25M), bambara groundnut and maize (50B/50M), bambara groundnut and maize (25B/75M), sole crop maize and the space provision were studied over three years period (2005, 2006 et 2007). The space provision is plant in the same row and plant in the row different. Grain yield advantage due to intercropping was assessed using the Land Equivalent Ratio. The systems of association of cultures were more productive in term of production out of seeds than the pure cultures. Nevertheless, among the farming systems associated, associations in the row different are more productive than associations in the same row. The productivity of the voandzou is more significant with the small proportions of maize. Grain yield of maize is higher when the proportion of maize in the association is higher, however the highest weight of the grains were observed when the proportion of voandzou is higher.

Source:

* Pdf: http://www.innspub.net/wp-content/uploads/2014/07/IJAAR-V5No1-p46-55.pdf

Qualities of monogerm male-sterile sugar beet lines

Georgi Kikindonov

Plant Breeding Department, Agricultural Institute, Shumen, Bulgaria

Key words: Sugar beet, Male sterility, Monogerm, Productivity.

Abstract

shutterstock_79736593The majority of the commercial varieties of sugar beet in Europe are hybrids, based on monogerm diploid malesterile females and multigerm diploid and tetraploid pollinators. The aim of the present study is by testing the basic biological qualities of recently created male-sterile sugar beet lines (male sterility, monogermity, seeds germination), and the combination of productivity and technological qualities, to make an assessment of their breeding value. The diploid lines have high male sterility, combined with high laboratory seeds germination and practically full monogermity. The tetraploid lines show significantly lower levels of male sterility and germination. The diploid monogerm lines MS 0819, MS 0922 and MS 0926 combine good biological characteristics with high own productivity and technological indices. The tetraploid lines tested have better technological qualities, and the best combination of good biological and economic qualities is manifested by MS 142. The high heterosis effect levels registered for the white sugar yield from the triploid hybrids of the tested lines with multigerm pollinators are indication for the very good combining ability of the monogerm lines and a proof for their high breeding value.

Source:

* Main File: http://www.innspub.net/ijaar/qualities-of-monogerm-male-sterile-sugar-beet-lines/

Performance of sweet potato varieties across environments in Kenya

sweet-potato

J.K. Mwololo, M. W. K. Mburu, P.W. Muturi

Key words: Disease incidence, Ipomoea batatas, productivity, dual, selection.

Abstract

Sweet potato is an important food, feed and cash crop in Eastern Africa but its adoption as a dual purpose crop has not been exploited. Varieties giving high tuber and vine yields would be ideal for small scale farmers who are the predominant producers. Continue reading Performance of sweet potato varieties across environments in Kenya