Growth and productive responses of tropical grass Panicum maximum to nitrate and ammonium supply
Jorge Henrique da Silva Santos,Fabiano Daniel De Bona,Fabiano Daniel De Bona,Francisco Antonio Monteiro +3 more
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TLDR
Enhanced N-use efficiency associated with P. maximum plants supplied with a NO3- and NH4+ mixture in the growth medium supports the assumption that it is possible to increase plant production by managing N fertilization based on quality (N forms) of N fertilizers applied in pasture systems.Abstract:
This study was conducted to investigate growth response parameters and forage yield of Panicum maximum Jacq. plants supplied with nitrate (NO3-) and ammonium (NH4+) as N source in a nutrient solution. Six NO3- and NH4+ combinations were tested at the following proportions: 100-0, 85-15, 70-30, 55-45, 40-60 and 25-75%. Grass shoot (number of tillers and leaves and leaf surface area) and root (length and surface area) growth parameters and dry matter production exhibited highest values in P. maximum plants growing in the nutrient solution supplied with NO3-:NH4+ at the proportions ranging between approximately 70-30 and 55-45%. The use of NO3-:NH4+ mixture at the ratio of 55-45% instead of the NO3- solely as N source in the nutrient solution enhanced the production of tillers and leaves and the leaf area surface of P. maximum by about 30, 20 and 30%, respectively. Plants supplied with NO3- and NH4+ mixture (55-45%) showed an increased root length and root surface area by approximately two and six-fold, respectively, compared with P. maximum fertilized with NO3- exclusively in the growth medium. Supplying N in the nutrient solution as NO3- or NH4+ exceeding approximately 70 or 50%, respectively, caused a diminished P. maximum forage yield. Enhanced N-use efficiency associated with P. maximum plants supplied with a NO3- and NH4+ mixture in the growth medium supports the assumption that it is possible to increase plant production by managing N fertilization based on quality (N forms) of N fertilizers applied in pasture systems.read more
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Abattoir Wastewater Irrigation Increases the Availability of Nutrients and Influences on Plant Growth and Development.
TL;DR: The results confirm the beneficial effects of AWW at the greenhouse level, however, a proper cropping pattern and wastewater irrigation management plan is essential to utilise the nutrients available in the wastewater-irrigated land treatment sites.
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Biological Nitrification Inhibition (BNI): Phenotyping of a Core Germplasm Collection of the Tropical Forage Grass Megathyrsus maximus Under Greenhouse Conditions.
Daniel Villegas,Ashly Arévalo,Jonathan Nuñez,Johanna Mazabel,Guntur Venkata Subbarao,Idupulapati M. Rao,Jose J De Vega,Jacobo Arango +7 more
TL;DR: Evidence is provided of the ability of M. maximus to suppress soil nitrification and N2O emissions and their relationship with productivity and forage quality, pointing a way to develop N conservative improved forage grasses for tropical livestock production.
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Nitrogen recovery, use efficiency, dry matter yield, and chemical composition of palisade grass fertilized with nitrogen sources in the Cerrado biome
Elisângela Dupas,Salatiér Buzetti,Flávio Henrique Silveira Rabêlo,André Luís Sarto,Nicole Colombari Cheng,Marcelo Carvalho Minhoto Teixeira Filho,Fernando Shintate Galindo,Raíssa Perreira Dinalli,Rodolfo de Niro Gazola +8 more
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Water balance and N-metabolism in broccoli (Brassica oleracea L. var. Italica) plants depending on nitrogen source under salt stress and elevated CO2
TL;DR: Elevated [CO2] ameliorated the effect of salt exposure on the plant growth through an enhanced rate of photosynthesis, even at low N-concentration, however, NO3(-) or NO3(-)/NH4(+) co-provision display differential plant response to salt stress regarding water balance, which was associated to N metabolism.
Journal ArticleDOI
Silvopastoral systems of the Chaco forests: Effects of trees on grass growth
TL;DR: In this paper, the seasonal variation of gatton panic productivity and quality in two sites with different annual rainfall was estimated, and the effects of tree shadow (guayacan, Caesalpinia paraguariensis) on gattonpanic above ground primary production (ANPP) were analyzed.
References
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Book
The Mineral Nutrition of Higher Plants
M. H. Martin,H. Marschner +1 more
TL;DR: This chapter discusses the relationship between Mineral Nutrition and Plant Diseases and Pests, and the Soil-Root Interface (Rhizosphere) in Relation to Mineral Nutrition.
Book
Mineral Nutrition of Higher Plants
TL;DR: In this article, the authors discuss the relationship between mineral nutrition and plant diseases and pests, and diagnose deficiency and toxicity of mineral nutrients in leaves and other aerial parts of a plant.