Brachiaria sp yield and nutrient contents after nitrogen and sulphur fertilization

Abstract

SUMMARYAmong the production factors, adequate fertilization is an important tool to raise the productivity of pastoral systems and consequently increase the share of Brazil in the supply chain of primary agricultural products at the global level. The objective of this study was to evaluate the interaction of nitrogen and sulfur fertilization in Brachiaria decumbens Stapf. The experiment in pots with Dystrophic Oxisol was evaluated in a completely randomized design with four replications in a 5 x 3 factorial arrangement, involving five N doses (0, 100, 200, 400, and 800 mg dm -3 ) in the form of ammonium nitrate and three S doses (0, 20 and 80 mg dm -3 ) in the form of calcium sulfate, with a total of 15 treatments. In the treatments with low S dose, calcium was provided as calcium chloride, to ensure a homogeneous Ca supply in all treatments. The results showed that the tiller production and dry weight of green leaves and of stems + sheaths and total dry weight were favored by the combination of N and S fertilizer, while the proportion of dry leaves was reduced. Nitrogen fertilization raised the N contents in green leaves and stems + sheaths and reduced K contents in fresh and dry leaves. The response to S rates in the N content of green leaves was quadratic.Index terms: fertilization, Brachiaria decumbens, plant nutrition, forage plants.(1) Received for publication on July 3, 2012 and approved on May 14, 2013.(2) Professor, Univ Estadual Paulista "Júlio de Mesquita Filho", UNESP/Campus de Dracena. Rodovia SP 294, km 651. CEP 17900-000 Dracena (SP

Morphoagronomical and Nutritive Performance of Brachiaria Grasses Affected by Soil Type and Fertilizer Application Grown under Rainfed Condition in Ethiopia

“…In addition, the implication that both soil types in the study area is demanding fertilizer application for the better forage production. Tis present study was in agreement with the fndings of [42] who noted that as the level of NKP fertilizer increase (0 to 150 to 300 kg/ha) the mean PH of Brachiaria brizantha c.v Marandu was increased from 6.74 to 7.86 to 10.13 cm, respectively at 60 days of harvesting age. But, the current study values of all experimental Brachiaria grass cultivars are higher than these values (74 to 7.86 to 10.13 cm) reported by [42].…”

“…Tis present study was in agreement with the fndings of [42] who noted that as the level of NKP fertilizer increase (0 to 150 to 300 kg/ha) the mean PH of Brachiaria brizantha c.v Marandu was increased from 6.74 to 7.86 to 10.13 cm, respectively at 60 days of harvesting age. But, the current study values of all experimental Brachiaria grass cultivars are higher than these values (74 to 7.86 to 10.13 cm) reported by [42]. Tis diference might be attributed by the genetic variation of grasses, soil type an fertility, rain fall condition, harvesting age, and methods of establishment.…”

Phosphorus Sources and Rates Associated with Nitrogen Fertilization in Mombasa Grass Yield

“…Nitrogen is directly related to forage quality (Teixeira et al 2011;Heinrichs et al 2013), since a part in the synthesis of organic compounds that form the plant structure, such as amino sugars, amines, amides, vitamins, pigments, amino acids, proteins, nucleic acids, and molecule chlorophyll (Mengel and Kirkby 2001). N in plants is responsible for the emergence and development of tillers, leaf, and stem size and formation of proteins (Epstein and Bloom 2005).…”

Evaluation of sulfur source and dose on the nutritional state and production of piatã forage

“…Results obtained in this study agree with those observed by Custódio et al (2005). In contrast, Heinrichs et al (2013) found no significant effects of sulfur fertilization on K or Ca concentrations.…”

“…Schmidt and Monteiro (2015) reported that the number of tillers Evaluation of sulfur source and dose on the nutritional state and production of piatã forage in Tanzania grass increased sharply with increasing S availability, reaching 120 and 170 % more tillers per pot at the first and second cut, respectively. The effects of sulfur app1lication on the three primary vegetative parameters evaluated (SDM, RDM, and tiller number; Figures 1A, 1B and 1C, respectively) are fundamental for optimizing the productivity of Piatã grass and assuring fast growth of the plants after cuts or grazes (HEINRICHS et al, 2013;SCHMIDT;MONTEIRO, 2015).…”