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Accueil du site → Master → Botswana → Comparative assessment of the effects of horse manure and urea as nitrogen sources on seed yield, forage production and nutritional quality of Cenchrus ciliaris post seed harvesting.

Botswana University of Agriculture and Natural Resources (BUANR) 2020

Comparative assessment of the effects of horse manure and urea as nitrogen sources on seed yield, forage production and nutritional quality of Cenchrus ciliaris post seed harvesting.

Maeresera, Tinieri

Titre : Comparative assessment of the effects of horse manure and urea as nitrogen sources on seed yield, forage production and nutritional quality of Cenchrus ciliaris post seed harvesting.

Auteur : Maeresera, Tinieri

Université de soutenance : Botswana University of Agriculture and Natural Resources (BUANR)

Grade : Master of Science Degree in Animal Science (Nutrition) 2020

Résumé partiel
The objective of this research was to evaluate the comparative effects of horse manure and urea, as sources of nitrogen, on seed and biomass yields of Cenchrus ciliaris and the nutritional quality of its forage residues after harvesting seeds. Two studies were carried out for the investigation. In the first study, 18 plots of C. ciliaris, grown from tussocks under irrigation, were used in a replicated 6 x 3 completely randomized design with 4 months experimental period. Six plots of C. ciliaris were assigned to each of the three treatments of no fertilizer, fertilizing with horse manure and fertilizin g with urea. After four months, seed yield, forage dry matter yield, number of tillers per crown and lengths of inflorescences of the C. ciliaris were measured. Data were analyzed using the General Linear Model Procedures in Statistical Analysis System (SAS). Fertilizing C. ciliaris with either horse manure or urea caused a significantly (P < 0.05) higher seed yield, forage biomass yield and number of tillers per crown than the control treatment. There was no significant (P > 0.05) difference in the length of inflorescence of C. ciliaris between the two fertilizer treatments and the control. Fertilizing C. ciliaris with horse manure caused a significantly (P < 0.05) higher seed yield (18.46 ± 1.42 kg/ha) than fertilizing with urea (14.51 ± 1.92 kg/ha). There was no significant (P > 0.05) difference in number of tillers per crown between fertilizing with horse manure and fertilizing with urea. Fertilizing the C. ciliaris using urea caused a significantly (P < 0.05) higher forage biomass yield (2739.62 ± 274.42 kg dry matter/ha) than fertilizing with horse manure (2237.85 ± 118.99 kg dry matter/ha). This research, therefore, showed that fertilizing C. ciliaris with horse manure was superior to fertilizing it with urea in terms of increasing the seed yield but fertilizing it with urea was superior in terms of forage dry matter yield. If the objective is to produce seed, horse manure would be the source of nitrogen to use and if the target is to produce higher dry matter

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Page publiée le 6 janvier 2022