30 documents found, page 1 of 3
Growth and phosphorus uptake by cassava in P-deficient soil in response to myco...
Cavallari,Lucas Guilherme; Fernandes,Adalton Mazetti; Mota,Lydia Helena da Silva de Oliveira; Leite,Hugo Mota Ferreira; Piroli,Valkíria Luísa BorsaABSTRACT Phosphorus (P) is one of the most difficult nutrients for plants to acquire because of its low content in the soil solution. Cassava (Manihot esculenta Crantz) has a thick and sparse absorbent root system; therefore, it is dependent on its association with arbuscular mycorrhizal fungi (AMF) for P acquisition from the soil. Thus, inoculation of cassava with AMF can improve the development of this root c...
Growth and yield of sweet potato in response to the application of nitrogen rat...
Ribeiro,Nathalia Pereira; Fernandes,Adalton Mazetti; Silva,Rudieli Machado da; Pelvine,Raíra Andrade; Assunção,Natália SilvaABSTRACT The excess of nitrogen (N) causes the overgrowth of sweet potato foliage, increasing the self-shading and reducing the root yield. Therefore, a combined N and paclobutrazol (PBZ) application can reduce the vegetative overgrowth and benefit the sweet potato yield. The purpose of this study was to evaluate the plant growth, yield, uptake and removal of N by sweet potato plants fertilized with N and treat...
Shoot growth, tuber yield and quality of two potato cultivars as affected by pr...
Oliveira,Luan Santos de; Fernandes,Adalton Mazetti; Soratto,Rogério Peres; Han,Daniela; Silva,Rudieli Machado daABSTRACT This study evaluated the effects of the rates and timings of prohexadione-calcium (prohexadione-Ca) application on shoot growth, tuber yield, and quality of two potato cultivars (Agata and Mondial). An experiment with each cultivar was carried out in a greenhouse using a randomized block design with four replications. Treatments consisted of a control and single or sequential foliar applications of pro...
Nutrient uptake and removal by sweet potato fertilized with green manure and ni...
Fernandes,Adalton Mazetti; Assunção,Natália Silva; Ribeiro,Nathalia Pereira; Gazola,Bruno; Silva,Rudieli Machado daABSTRACT Sweet potato crops take up large amounts of nutrients, especially nitrogen. In low-fertility soils, the addition of nitrogen (N) increases the sweet potato yield. Green manure may be an alternative method for improving soil quality and supplying nutrients to this crop. This study aimed to evaluate the plant’s nutritional status and the amount of nutrients taken up and removed by sweet potato plants sub...
Potato yield and phosphorus nutrition using humic substances in two soil textures
Martins,Jéssyca Dellinhares Lopes; Soratto,Rogério Peres; Fernandes,Adalton MazettiAbstract: The objective of this work was to evaluate the effect of humic substances (HS) and phosphorus fertilizer on the growth, P uptake, tuber yield, fertilizer P recovery (FPR), and applied P-use efficiency (APUE) of potato (Solanum tuberosum) cultivated in a sandy and in a clayey soils. In both soils, the experiment was carried out in a randomized complete block design, in a 4×3 factorial arrangement, with...
Nutrient Uptake and Removal by Potato Cultivars as Affected by Phosphate Fertil...
Fernandes,Adalton Mazetti; Soratto,Rogério Peres; Souza,Emerson de Freitas Cordova de; Job,André Luiz GomesABSTRACT Studies in the past decades have focused on how tuber yield of potato grown on different types of soil is affected by phosphate fertilizer rates. However, little is known about the effects of phosphorus availability in the soil and of phosphate fertilization on nutrient uptake and removal by the main potato cultivars currently grown in Brazil. Thus, in this study we investigated the influence of P fert...
Nitrogênio no crescimento da planta e na qualidade de raízes da mandioquinha-salsa
Nunes,Amanda Rodrigues Alves; Fernandes,Adalton Mazetti; Leonel,Magali; Garcia,Emerson Loli; Magolbo,Luis Augusto; Carmo,Ezequiel Lopes doRESUMO: O nitrogênio (N) é o segundo nutriente mais absorvido pela mandioquinha-salsa. No entanto, ainda existem dúvidas sobre a influência que esse nutriente pode exercer sobre o crescimento da planta e a qualidade das raízes de reserva. Assim, objetivou-se com este trabalho avaliar a influência da adubação nitrogenada no crescimento da planta e na qualidade físico-química e nutricional das raízes de mandioqui...
Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant ...
Crusciol,Carlos Alexandre Costa; Fernandes,Adalton Mazetti; Carmeis Filho,Antonio Carlos de Almeida; Alvarez,Rita de Cássia FélixABSTRACT Modern high-yielding rice cultivars possibly take up and remove greater quantities of macronutrients than traditional and intermediate cultivars. This study was carried out with the aim of evaluating the extraction and removal of macronutrients by upland rice cultivars. These information are of utmost importance for the correct fertilizer management. The treatments consisted of three upland rice cultiv...
Micronutrient and Silicon Uptake and Removal by Upland Rice Cultivars with Diff...
Crusciol,Carlos Alexandre Costa; Carmeis Filho,Antonio Carlos de Almeida; Fernandes,Adalton Mazetti; Alvarez,Rita de Cássia FélixABSTRACT Upland rice cultivars manifest different nutritional demands. A field study was conducted to quantify the extraction, distribution, and removal of micronutrients and silicon by the upland rice cultivars. The experiment was arranged in a randomized complete block-split plot design. Plots consisted of three cultivars (Caiapó – traditional, BRS Primavera – intermediate, and Maravilha – modern) of upland r...
Qualidade de tubérculos de batata da cultivar 'Atlantic' afetada pela adubação ...
Fernandes,Adalton Mazetti; Soratto,Rogério Peres; Evangelista,Regina MartaTo evaluate the influence of phosphorus (P) fertilization on the potato tuber quality of the cultivar 'Atlantic' experiments were conducted in soils with medium (36 mg dm-3) and high (70 mg dm-3) P availability. The treatments consisted of five P2O5 rates (0, 125, 250, 500, and 1,000 kg ha-1). The experiments were conducted in a randomized block design, with four replications. Only in soil with medium P availab...