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Papers by Sirajo Salisu Jibia

Research paper thumbnail of Effects of Source on the Nitrogen Uptake, Allocation Patterns, and Performance of Strawberry (Fragaria × ananassa Duch.): A 15 N-Tracer Study

Nitrogen (N) is an essential determinant of strawberry growth and productivity. However, plants e... more Nitrogen (N) is an essential determinant of strawberry growth and productivity. However, plants exhibit varying preferences for sources of nitrogen, which ultimately affects its use efficiency. Thus, it is imperative to determine the preferred N source for the optimization of indoor strawberry production. This study employed the 15 N-tracer technique to investigate the effects of N sources on N uptake, distribution, and use efficiency, as well as the plants' growth, for 'Praratchatan 80' strawberries in a greenhouse. Five treatments were applied: T1 (5.0 mM 15 NO 3-), T2 (2.5 mM 15 NO 3-+ 2.5 mM NH 4 +), T3 (5.0 mM 15 NH 4 +), T4 (2.5 mM 15 NH 4 + + 2.5 mM NO 3-), and T5 (N-free, control) in a completely randomized design. Significant (p < 0.05) differences were observed in N uptake and distribution and total N concentration among the treatments. Sole NH 4 + promoted early N uptake and accelerated flowering, while NO 3-enhanced vegetative growth and later-stage nitrogen use efficiency (NUE). The application of combined NO 3-and NH 4 + was most efficacious, balancing the benefits of both N forms. NO 3-treatment enhanced 15 NUE by 46% compared to NH 4 , and mixed N sources demonstrated superior and consistent 15 NUE over time. NH 4 + , alone or with NO 3-, expedited flowering by 20 days compared to sole NO 3-and N-free treatments. This study elucidates the importance of the sources of N in optimizing strawberry growth and flowering, providing a foundation for developing tailored N-management strategies. Future research should focus on refining mixed N application ratios and timings, exploring molecular mechanisms of N metabolism, and evaluating long-term impacts on strawberry production sustainability.

Research paper thumbnail of Plants

Research paper thumbnail of Growth and Yield of Vegetable Amaranth as Affected by Poultry Manure and Seedling Age at Transplanting

A field experiment was conducted 2010 cropping season at the Institute for Agricultural Research ... more A field experiment was conducted 2010 cropping season at the Institute for Agricultural Research Farm, Samaru, (11 0 , 11' N, 07 0 38'E). Experimental site was 686 m above sea level in the northern Guinea savanna ecological zone of Nigeria. Study focused on to assess the effects of poultry manure rates (0, 4, 8 and 12 t ha-1) and seedling age (2, 3 and 4 weeks after sowing) at transplanting on growth and yield of amaranth (Amaranthus caudatus L.). Treatments consisted of factorial combinations of four levels of poultry manure and three transplant ages in a randomized complete block design (RCBD) with three replicates. Results indicated that plant height (cm), shoot fresh weight (kg) and number of leaves and branches per plant were significantly (P<0.05) higher with the application of 8 t ha-1 of poultry manure compared with no-manure than the other treatments. However, in most cases, the difference in growth characters using poultry manure rates varying from 4 to 12 t ha-1 were non-significant. Seedlings transplanted at 4 weeks of age were significant taller with shoot fresh weight than 2-weeks old seedlings at the initial growth stage. Transplant age had no effect on these parameters at later stage. All the other growth parameters were not affected (P<0.05) by transplant age. Study suggested that marketable yield increased significantly with increasing poultry manure (4 t ha-1) with transplanting age (2-3 weeks) after emergence to benefit farmers the highest.

Research paper thumbnail of The Allelopathic Efficacy of Neem Seed Cake on the Germination and Growth Vigour of Some Leguminous and Oil Seeds

International Journal of Agriculture and Technology, 2021

Neem (Azadirachta indica A.) tree has been known to be useful in soil enrichment and for insect, ... more Neem (Azadirachta indica A.) tree has been known to be useful in soil enrichment and for insect, pest and disease control. Thus, it is of benefit to study the allelopathic efficacy of powdered neem seed cake on the germination and seedling growth vigour of cowpea, groundnut, sesame, soya beans and Bambara groundnut. A field research work was conducted at college of Agriculture, Hassan Usman Katsina Polytechnic during the 2008 raining season using split plot design with three replication and six main plot treatment 0, 0.5, 1, 2, 4, and 8 tons/ha and the tested seeds as main subplot treatments. The result showed that powdered neem seed cake was found to have no allelopathic effect on the germination of cowpea, sesame, Bambara ground nut, ground nut at 0-2 tons/ha and soya beans at 0-4 tons/ha and have no allelopathic effect on the seedling growth vigour of cowpea, sesame, soya beans, Bambara ground nut and ground nut at 0-4 tons/ha. Further research is required on the allelopathic eff...

Research paper thumbnail of Bioefficacy of Senna Occidentalis (L) Leaves Exract in the Management of Sitophilus Zeamais (Mots) (Maize Weevil) in Sudan Savannah Ecological Zone of Nigeria

Canadian Journal of Agriculture and Crops, 2020

Ethanolic leaves extract of Senna occidentalis (L) at the rate of 1ml, 2ml and 3ml and a known we... more Ethanolic leaves extract of Senna occidentalis (L) at the rate of 1ml, 2ml and 3ml and a known weight of maize at 100g, 200g and 300g was used and tested for bioefficacy in the Laboratory for the management of Sitophilus zeamais Mots (maize weevil) on number of holes, oviposition response, antifeeding and germination percentage after maize storage for a diminutive period of six weeks in the Sudan Savannah Ecological Zone of Nigeria. A Complete randomized design (CRD) was used consisting of four treatments (including control) and repeated four times to determine the bioefficacy of Senna occidentalis L. in the management of the most destructive maize pest Sitophilus zeamais L. The result indicate that Senna occidentalis (L) leaves can serve as an antifeeding agent in managing the speed of infestation by S. zeamais in stored maize and positively affect the rate of oviposition of Sitophilus zeamais Mots. The result shows that Senna occidentalis L. has no effect on germination percentage observed during the maize seeds after the period of the storage. In conclusion, this research work suggested that the, management of Sitophilus zeamais (Mots) using Senna occidentalis (L) is promising and can be employed to store maize for a period of six weeks without disincentive to the quality of maize for consumption and for subsequent planting.

Research paper thumbnail of Effects of Source on the Nitrogen Uptake, Allocation Patterns, and Performance of Strawberry (Fragaria × ananassa Duch.): A 15 N-Tracer Study

Nitrogen (N) is an essential determinant of strawberry growth and productivity. However, plants e... more Nitrogen (N) is an essential determinant of strawberry growth and productivity. However, plants exhibit varying preferences for sources of nitrogen, which ultimately affects its use efficiency. Thus, it is imperative to determine the preferred N source for the optimization of indoor strawberry production. This study employed the 15 N-tracer technique to investigate the effects of N sources on N uptake, distribution, and use efficiency, as well as the plants' growth, for 'Praratchatan 80' strawberries in a greenhouse. Five treatments were applied: T1 (5.0 mM 15 NO 3-), T2 (2.5 mM 15 NO 3-+ 2.5 mM NH 4 +), T3 (5.0 mM 15 NH 4 +), T4 (2.5 mM 15 NH 4 + + 2.5 mM NO 3-), and T5 (N-free, control) in a completely randomized design. Significant (p < 0.05) differences were observed in N uptake and distribution and total N concentration among the treatments. Sole NH 4 + promoted early N uptake and accelerated flowering, while NO 3-enhanced vegetative growth and later-stage nitrogen use efficiency (NUE). The application of combined NO 3-and NH 4 + was most efficacious, balancing the benefits of both N forms. NO 3-treatment enhanced 15 NUE by 46% compared to NH 4 , and mixed N sources demonstrated superior and consistent 15 NUE over time. NH 4 + , alone or with NO 3-, expedited flowering by 20 days compared to sole NO 3-and N-free treatments. This study elucidates the importance of the sources of N in optimizing strawberry growth and flowering, providing a foundation for developing tailored N-management strategies. Future research should focus on refining mixed N application ratios and timings, exploring molecular mechanisms of N metabolism, and evaluating long-term impacts on strawberry production sustainability.

Research paper thumbnail of Plants

Research paper thumbnail of Growth and Yield of Vegetable Amaranth as Affected by Poultry Manure and Seedling Age at Transplanting

A field experiment was conducted 2010 cropping season at the Institute for Agricultural Research ... more A field experiment was conducted 2010 cropping season at the Institute for Agricultural Research Farm, Samaru, (11 0 , 11' N, 07 0 38'E). Experimental site was 686 m above sea level in the northern Guinea savanna ecological zone of Nigeria. Study focused on to assess the effects of poultry manure rates (0, 4, 8 and 12 t ha-1) and seedling age (2, 3 and 4 weeks after sowing) at transplanting on growth and yield of amaranth (Amaranthus caudatus L.). Treatments consisted of factorial combinations of four levels of poultry manure and three transplant ages in a randomized complete block design (RCBD) with three replicates. Results indicated that plant height (cm), shoot fresh weight (kg) and number of leaves and branches per plant were significantly (P<0.05) higher with the application of 8 t ha-1 of poultry manure compared with no-manure than the other treatments. However, in most cases, the difference in growth characters using poultry manure rates varying from 4 to 12 t ha-1 were non-significant. Seedlings transplanted at 4 weeks of age were significant taller with shoot fresh weight than 2-weeks old seedlings at the initial growth stage. Transplant age had no effect on these parameters at later stage. All the other growth parameters were not affected (P<0.05) by transplant age. Study suggested that marketable yield increased significantly with increasing poultry manure (4 t ha-1) with transplanting age (2-3 weeks) after emergence to benefit farmers the highest.

Research paper thumbnail of The Allelopathic Efficacy of Neem Seed Cake on the Germination and Growth Vigour of Some Leguminous and Oil Seeds

International Journal of Agriculture and Technology, 2021

Neem (Azadirachta indica A.) tree has been known to be useful in soil enrichment and for insect, ... more Neem (Azadirachta indica A.) tree has been known to be useful in soil enrichment and for insect, pest and disease control. Thus, it is of benefit to study the allelopathic efficacy of powdered neem seed cake on the germination and seedling growth vigour of cowpea, groundnut, sesame, soya beans and Bambara groundnut. A field research work was conducted at college of Agriculture, Hassan Usman Katsina Polytechnic during the 2008 raining season using split plot design with three replication and six main plot treatment 0, 0.5, 1, 2, 4, and 8 tons/ha and the tested seeds as main subplot treatments. The result showed that powdered neem seed cake was found to have no allelopathic effect on the germination of cowpea, sesame, Bambara ground nut, ground nut at 0-2 tons/ha and soya beans at 0-4 tons/ha and have no allelopathic effect on the seedling growth vigour of cowpea, sesame, soya beans, Bambara ground nut and ground nut at 0-4 tons/ha. Further research is required on the allelopathic eff...

Research paper thumbnail of Bioefficacy of Senna Occidentalis (L) Leaves Exract in the Management of Sitophilus Zeamais (Mots) (Maize Weevil) in Sudan Savannah Ecological Zone of Nigeria

Canadian Journal of Agriculture and Crops, 2020

Ethanolic leaves extract of Senna occidentalis (L) at the rate of 1ml, 2ml and 3ml and a known we... more Ethanolic leaves extract of Senna occidentalis (L) at the rate of 1ml, 2ml and 3ml and a known weight of maize at 100g, 200g and 300g was used and tested for bioefficacy in the Laboratory for the management of Sitophilus zeamais Mots (maize weevil) on number of holes, oviposition response, antifeeding and germination percentage after maize storage for a diminutive period of six weeks in the Sudan Savannah Ecological Zone of Nigeria. A Complete randomized design (CRD) was used consisting of four treatments (including control) and repeated four times to determine the bioefficacy of Senna occidentalis L. in the management of the most destructive maize pest Sitophilus zeamais L. The result indicate that Senna occidentalis (L) leaves can serve as an antifeeding agent in managing the speed of infestation by S. zeamais in stored maize and positively affect the rate of oviposition of Sitophilus zeamais Mots. The result shows that Senna occidentalis L. has no effect on germination percentage observed during the maize seeds after the period of the storage. In conclusion, this research work suggested that the, management of Sitophilus zeamais (Mots) using Senna occidentalis (L) is promising and can be employed to store maize for a period of six weeks without disincentive to the quality of maize for consumption and for subsequent planting.