A study was conducted during the 2016 rainy season at Jega Teaching and Research farm of Kebbi State University of Science and Technology to investigate the effect of sowing methods on the growth parameters,herbage an...A study was conducted during the 2016 rainy season at Jega Teaching and Research farm of Kebbi State University of Science and Technology to investigate the effect of sowing methods on the growth parameters,herbage and dry matter(DM)yield of Switch grass(Panicum vargatum)in the semi-arid zone of Nigeria.Treatment consisted of three sowing methods(broadcasting,dibbling and drilling)which were laid out in randomized complete block design(RCBD)replicated three times among three blocks.Each plot in each block was measuring,2 m×1 m.Seeds of Switch grass were sown manually at the rate of 5.6 kg/ha for all the treatments and NPK fertilizer was applied across the treatments at the rate of 100 kg/ha.The experiment lasted for 12 weeks during which the growth parameters and plant establishment counts were measured while fresh herbage and DM were determined after harvesting at the end of the period.The sowing methods had significant effect(p<0.05)on the growth parameters and herbage yield.The highest plant height(116.52 cm),leaf width(0.98 cm),leaf length(43.10 cm)and leaf number(9.37)was recorded for dibbling sowing method.Also,the highest fresh herbage(13.70 t/ha)and DM yield(2.33 t/ha)were recorded for dibbling sowing method.However,the mean establishment counts were not significantly(p>0.05)affected by the sowing methods.The results suggested that Switch grass can be successfully established in Sudan savanna zone by dibbling sowing methods for good growth performance,herbage and DM yield.展开更多
Effects and mechanisms of P and K nutrients on yield and protein content of Weiyou 56, a fodder hybrid rice combination,were studied through pot experiment and biochemical analysis. The results showed that the increas...Effects and mechanisms of P and K nutrients on yield and protein content of Weiyou 56, a fodder hybrid rice combination,were studied through pot experiment and biochemical analysis. The results showed that the increase of P and K nutrients enhanced the activities of PEP carboxylase (PEPC), glutamine synthase (GS) and sucrose phosphate synthase (SPS) in leaves, sucrose synthase (SS), ADP glucose pyrophosphorylase (ADPGP) and GS in grains, and the chlorophyll content in leaves, soluble sugar and starch content in grains, protein N and total N content in leaves and grains. Howerer, they decreased soluble sugar content in leaves and led to an increase of protein content in brown rice, biomass, grain yield and harvest index. Excessive P nutrients slightly reduced SPS and ADPG activity in leaves and grains respectively.展开更多
The availability of poor quality fodders for livestock feeding is a major hurdle for the dairy industry in South Asia. Thelow content of Zn in fodders, leads to its malnutrition in animals. In fodders, Zn facilitates ...The availability of poor quality fodders for livestock feeding is a major hurdle for the dairy industry in South Asia. Thelow content of Zn in fodders, leads to its malnutrition in animals. In fodders, Zn facilitates protein synthesis, gene expressions,energy production and involves in various metabolic activities of plants, animals and humans. To achieve these objectives,multi-location field trials were conducted on enrichment of oats fodder with Zn through bio-fortification. The experiment consists ofeight different treatment combinations for enrichment of oats fodder with Zn including control, soil and soil plus foliar application ofZn at different stages of plant growth. The results of the study reported that soil application of Zn at the rate of 25 kg/ha and soil +foliar application of Zn at 0.5% at 60 days after sowing (DAS) (jointing stage), 90 DAS (booting stage) and both 60 DAS and 90DAS showed improvement in plant growth parameters. The results further reported that foliar application of Zn at the rate of 0.5% at60 DAS, 90 DAS, both 60 DAS and 90 DAS reported significant increase in biomass yield and fodder quality. Integrated applicationof Zn at 25 kg/ha in soil along with foliar Zn at the rate of 0.5% at 60 DAS and 90 DAS showed maximum Zn enrichment, greenfodder yield, dry fodder yield, plant height, and Zn accumulation in oats fodder as compared to other treatments of Zn application.These treatments of Zn application through integrated mode also reported significant improvement in fodder quality with maximumcrude protein (CP) and crude protein yield (CPY) while neutral detergent fiber (NDF), acid detergent fiber (ADF), ash content andorganic matter showed a non-significant effect. Thus, the results of experimental study concluded that soil and foliar application ofZn at 25 kg/ha and 0.5% Zn, respectively, at 60 DAS and 90 DAS enhanced the growth, yield and quality of oats fodder which willcertainly improve livestock production through bio-fortification.展开更多
Biomass yields and concentrations of crude protein（CP）, ether extract（EE）, neutral detergent fiber（NDF）, acid detergent fiber（ADF）, and crude fiber（CF） were analyzed for five cultivars of summer-sown maize（...Biomass yields and concentrations of crude protein（CP）, ether extract（EE）, neutral detergent fiber（NDF）, acid detergent fiber（ADF）, and crude fiber（CF） were analyzed for five cultivars of summer-sown maize（Zea mays L.） stover grown in field trials at three rates of N fertilization, and sampled immediately after grain harvest.The results revealed differences in yields and concentrations of nutrients according to stalk height and hence harvest portion among the cultivars.N application greatly increased biomass yield and CP, especially in upper stalks and to a lesser extent, EE.Concentrations of NDF and ADF decreased as N rate increased.The results show that stovers from all local popular maize cultivars are suitable as animal fodder and that moderate N application improves feed quality of stover.展开更多
文摘A study was conducted during the 2016 rainy season at Jega Teaching and Research farm of Kebbi State University of Science and Technology to investigate the effect of sowing methods on the growth parameters,herbage and dry matter(DM)yield of Switch grass(Panicum vargatum)in the semi-arid zone of Nigeria.Treatment consisted of three sowing methods(broadcasting,dibbling and drilling)which were laid out in randomized complete block design(RCBD)replicated three times among three blocks.Each plot in each block was measuring,2 m×1 m.Seeds of Switch grass were sown manually at the rate of 5.6 kg/ha for all the treatments and NPK fertilizer was applied across the treatments at the rate of 100 kg/ha.The experiment lasted for 12 weeks during which the growth parameters and plant establishment counts were measured while fresh herbage and DM were determined after harvesting at the end of the period.The sowing methods had significant effect(p<0.05)on the growth parameters and herbage yield.The highest plant height(116.52 cm),leaf width(0.98 cm),leaf length(43.10 cm)and leaf number(9.37)was recorded for dibbling sowing method.Also,the highest fresh herbage(13.70 t/ha)and DM yield(2.33 t/ha)were recorded for dibbling sowing method.However,the mean establishment counts were not significantly(p>0.05)affected by the sowing methods.The results suggested that Switch grass can be successfully established in Sudan savanna zone by dibbling sowing methods for good growth performance,herbage and DM yield.
文摘Effects and mechanisms of P and K nutrients on yield and protein content of Weiyou 56, a fodder hybrid rice combination,were studied through pot experiment and biochemical analysis. The results showed that the increase of P and K nutrients enhanced the activities of PEP carboxylase (PEPC), glutamine synthase (GS) and sucrose phosphate synthase (SPS) in leaves, sucrose synthase (SS), ADP glucose pyrophosphorylase (ADPGP) and GS in grains, and the chlorophyll content in leaves, soluble sugar and starch content in grains, protein N and total N content in leaves and grains. Howerer, they decreased soluble sugar content in leaves and led to an increase of protein content in brown rice, biomass, grain yield and harvest index. Excessive P nutrients slightly reduced SPS and ADPG activity in leaves and grains respectively.
文摘The availability of poor quality fodders for livestock feeding is a major hurdle for the dairy industry in South Asia. Thelow content of Zn in fodders, leads to its malnutrition in animals. In fodders, Zn facilitates protein synthesis, gene expressions,energy production and involves in various metabolic activities of plants, animals and humans. To achieve these objectives,multi-location field trials were conducted on enrichment of oats fodder with Zn through bio-fortification. The experiment consists ofeight different treatment combinations for enrichment of oats fodder with Zn including control, soil and soil plus foliar application ofZn at different stages of plant growth. The results of the study reported that soil application of Zn at the rate of 25 kg/ha and soil +foliar application of Zn at 0.5% at 60 days after sowing (DAS) (jointing stage), 90 DAS (booting stage) and both 60 DAS and 90DAS showed improvement in plant growth parameters. The results further reported that foliar application of Zn at the rate of 0.5% at60 DAS, 90 DAS, both 60 DAS and 90 DAS reported significant increase in biomass yield and fodder quality. Integrated applicationof Zn at 25 kg/ha in soil along with foliar Zn at the rate of 0.5% at 60 DAS and 90 DAS showed maximum Zn enrichment, greenfodder yield, dry fodder yield, plant height, and Zn accumulation in oats fodder as compared to other treatments of Zn application.These treatments of Zn application through integrated mode also reported significant improvement in fodder quality with maximumcrude protein (CP) and crude protein yield (CPY) while neutral detergent fiber (NDF), acid detergent fiber (ADF), ash content andorganic matter showed a non-significant effect. Thus, the results of experimental study concluded that soil and foliar application ofZn at 25 kg/ha and 0.5% Zn, respectively, at 60 DAS and 90 DAS enhanced the growth, yield and quality of oats fodder which willcertainly improve livestock production through bio-fortification.
基金financially supported by the Key Technologies R&D Program of China during the 12th Five-Year Plan period(2012BAD14B07-01 and 2012BAD14B07-02)
文摘Biomass yields and concentrations of crude protein（CP）, ether extract（EE）, neutral detergent fiber（NDF）, acid detergent fiber（ADF）, and crude fiber（CF） were analyzed for five cultivars of summer-sown maize（Zea mays L.） stover grown in field trials at three rates of N fertilization, and sampled immediately after grain harvest.The results revealed differences in yields and concentrations of nutrients according to stalk height and hence harvest portion among the cultivars.N application greatly increased biomass yield and CP, especially in upper stalks and to a lesser extent, EE.Concentrations of NDF and ADF decreased as N rate increased.The results show that stovers from all local popular maize cultivars are suitable as animal fodder and that moderate N application improves feed quality of stover.
